// Tests largely based on those of Esprima
// (http://esprima.org/test/)

if (typeof exports != "undefined") {
  var driver = require("./driver.js");
  var test = driver.test, testFail = driver.testFail, testAssert = driver.testAssert, misMatch = driver.misMatch;
  var acorn = require("..");
}

test("this\n", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "ThisExpression",
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 4
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 4
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 2,
      column: 0
    }
  }
});

test("null\n", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "Literal",
        value: null,
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 4
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 4
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 2,
      column: 0
    }
  }
});

test("\n    42\n\n", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "Literal",
        value: 42,
        loc: {
          start: {
            line: 2,
            column: 4
          },
          end: {
            line: 2,
            column: 6
          }
        }
      },
      loc: {
        start: {
          line: 2,
          column: 4
        },
        end: {
          line: 2,
          column: 6
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 4,
      column: 0
    }
  }
});

test("/foobar/", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "Literal",
        value: /foobar/,
        regex: {
          pattern: "foobar",
          flags: ""
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 8
          }
        }
      }
    }
  ]
});

test("/[a-z]/g", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "Literal",
        value: /[a-z]/,
        regex: {
          pattern: "[a-z]",
          flags: "g"
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 8
          }
        }
      }
    }
  ]
});

test("(1 + 2 ) * 3", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "BinaryExpression",
        left: {
          type: "BinaryExpression",
          left: {
            type: "Literal",
            value: 1,
            loc: {
              start: {
                line: 1,
                column: 1
              },
              end: {
                line: 1,
                column: 2
              }
            }
          },
          operator: "+",
          right: {
            type: "Literal",
            value: 2,
            loc: {
              start: {
                line: 1,
                column: 5
              },
              end: {
                line: 1,
                column: 6
              }
            }
          },
          loc: {
            start: {
              line: 1,
              column: 1
            },
            end: {
              line: 1,
              column: 6
            }
          }
        },
        operator: "*",
        right: {
          type: "Literal",
          value: 3,
          loc: {
            start: {
              line: 1,
              column: 11
            },
            end: {
              line: 1,
              column: 12
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 12
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 12
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 12
    }
  }
});

test("(1 + 2 ) * 3", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "BinaryExpression",
        left: {
          type: "ParenthesizedExpression",
          expression: {
            type: "BinaryExpression",
            left: {
              type: "Literal",
              value: 1,
              loc: {
                start: {
                  line: 1,
                  column: 1
                },
                end: {
                  line: 1,
                  column: 2
                }
              }
            },
            operator: "+",
            right: {
              type: "Literal",
              value: 2,
              loc: {
                start: {
                  line: 1,
                  column: 5
                },
                end: {
                  line: 1,
                  column: 6
                }
              }
            },
            loc: {
              start: {
                line: 1,
                column: 1
              },
              end: {
                line: 1,
                column: 6
              }
            }
          },
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 8
            }
          }
        },
        operator: "*",
        right: {
          type: "Literal",
          value: 3,
          loc: {
            start: {
              line: 1,
              column: 11
            },
            end: {
              line: 1,
              column: 12
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 12
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 12
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 12
    }
  }
}, {
  locations: true,
  preserveParens: true
});

testFail("(x) = 23", "Assigning to rvalue (1:0)", { preserveParens: true });

test("x = []", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 6
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 6
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 6
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 6
    }
  }
});

test("x = [ ]", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 7
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 7
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 7
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 7
    }
  }
});

test("x = [ 42 ]", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [
            {
              type: "Literal",
              value: 42,
              loc: {
                start: {
                  line: 1,
                  column: 6
                },
                end: {
                  line: 1,
                  column: 8
                }
              }
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 10
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 10
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 10
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 10
    }
  }
});

test("x = [ 42, ]", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [
            {
              type: "Literal",
              value: 42,
              loc: {
                start: {
                  line: 1,
                  column: 6
                },
                end: {
                  line: 1,
                  column: 8
                }
              }
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 11
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 11
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 11
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 11
    }
  }
});

test("x = [ ,, 42 ]", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [
            null,
            null,
            {
              type: "Literal",
              value: 42,
              loc: {
                start: {
                  line: 1,
                  column: 9
                },
                end: {
                  line: 1,
                  column: 11
                }
              }
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 13
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 13
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 13
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 13
    }
  }
});

test("x = [ 1, 2, 3, ]", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [
            {
              type: "Literal",
              value: 1,
              loc: {
                start: {
                  line: 1,
                  column: 6
                },
                end: {
                  line: 1,
                  column: 7
                }
              }
            },
            {
              type: "Literal",
              value: 2,
              loc: {
                start: {
                  line: 1,
                  column: 9
                },
                end: {
                  line: 1,
                  column: 10
                }
              }
            },
            {
              type: "Literal",
              value: 3,
              loc: {
                start: {
                  line: 1,
                  column: 12
                },
                end: {
                  line: 1,
                  column: 13
                }
              }
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 16
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 16
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 16
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 16
    }
  }
});

test("x = [ 1, 2,, 3, ]", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [
            {
              type: "Literal",
              value: 1,
              loc: {
                start: {
                  line: 1,
                  column: 6
                },
                end: {
                  line: 1,
                  column: 7
                }
              }
            },
            {
              type: "Literal",
              value: 2,
              loc: {
                start: {
                  line: 1,
                  column: 9
                },
                end: {
                  line: 1,
                  column: 10
                }
              }
            },
            null,
            {
              type: "Literal",
              value: 3,
              loc: {
                start: {
                  line: 1,
                  column: 13
                },
                end: {
                  line: 1,
                  column: 14
                }
              }
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 17
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 17
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 17
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 17
    }
  }
});

test("日本語 = []", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "日本語",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 3
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [],
          loc: {
            start: {
              line: 1,
              column: 6
            },
            end: {
              line: 1,
              column: 8
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 8
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 8
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 8
    }
  }
});

test("T‿ = []", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "T‿",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 2
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [],
          loc: {
            start: {
              line: 1,
              column: 5
            },
            end: {
              line: 1,
              column: 7
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 7
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 7
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 7
    }
  }
});

test("T‌ = []", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "T‌",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 2
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [],
          loc: {
            start: {
              line: 1,
              column: 5
            },
            end: {
              line: 1,
              column: 7
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 7
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 7
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 7
    }
  }
});

test("T‍ = []", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "T‍",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 2
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [],
          loc: {
            start: {
              line: 1,
              column: 5
            },
            end: {
              line: 1,
              column: 7
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 7
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 7
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 7
    }
  }
});

test("ⅣⅡ = []", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "ⅣⅡ",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 2
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [],
          loc: {
            start: {
              line: 1,
              column: 5
            },
            end: {
              line: 1,
              column: 7
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 7
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 7
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 7
    }
  }
});

test("ⅣⅡ = []", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "ⅣⅡ",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 2
            }
          }
        },
        right: {
          type: "ArrayExpression",
          elements: [],
          loc: {
            start: {
              line: 1,
              column: 5
            },
            end: {
              line: 1,
              column: 7
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 7
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 7
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 7
    }
  }
});

test("x = {}", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 6
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 6
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 6
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 6
    }
  }
});

test("x = { }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 7
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 7
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 7
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 7
    }
  }
});

test("x = { answer: 42 }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "answer",
                loc: {
                  start: {
                    line: 1,
                    column: 6
                  },
                  end: {
                    line: 1,
                    column: 12
                  }
                }
              },
              value: {
                type: "Literal",
                value: 42,
                loc: {
                  start: {
                    line: 1,
                    column: 14
                  },
                  end: {
                    line: 1,
                    column: 16
                  }
                }
              },
              kind: "init"
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 18
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 18
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 18
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 18
    }
  }
});

test("x = { if: 42 }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "if",
                loc: {
                  start: {
                    line: 1,
                    column: 6
                  },
                  end: {
                    line: 1,
                    column: 8
                  }
                }
              },
              value: {
                type: "Literal",
                value: 42,
                loc: {
                  start: {
                    line: 1,
                    column: 10
                  },
                  end: {
                    line: 1,
                    column: 12
                  }
                }
              },
              kind: "init"
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 14
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 14
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 14
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 14
    }
  }
});

test("x = { true: 42 }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "true",
                loc: {
                  start: {
                    line: 1,
                    column: 6
                  },
                  end: {
                    line: 1,
                    column: 10
                  }
                }
              },
              value: {
                type: "Literal",
                value: 42,
                loc: {
                  start: {
                    line: 1,
                    column: 12
                  },
                  end: {
                    line: 1,
                    column: 14
                  }
                }
              },
              kind: "init"
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 16
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 16
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 16
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 16
    }
  }
});

test("x = { false: 42 }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "false",
                loc: {
                  start: {
                    line: 1,
                    column: 6
                  },
                  end: {
                    line: 1,
                    column: 11
                  }
                }
              },
              value: {
                type: "Literal",
                value: 42,
                loc: {
                  start: {
                    line: 1,
                    column: 13
                  },
                  end: {
                    line: 1,
                    column: 15
                  }
                }
              },
              kind: "init"
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 17
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 17
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 17
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 17
    }
  }
});

test("x = { null: 42 }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "null",
                loc: {
                  start: {
                    line: 1,
                    column: 6
                  },
                  end: {
                    line: 1,
                    column: 10
                  }
                }
              },
              value: {
                type: "Literal",
                value: 42,
                loc: {
                  start: {
                    line: 1,
                    column: 12
                  },
                  end: {
                    line: 1,
                    column: 14
                  }
                }
              },
              kind: "init"
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 16
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 16
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 16
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 16
    }
  }
});

test("x = { \"answer\": 42 }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Literal",
                value: "answer",
                loc: {
                  start: {
                    line: 1,
                    column: 6
                  },
                  end: {
                    line: 1,
                    column: 14
                  }
                }
              },
              value: {
                type: "Literal",
                value: 42,
                loc: {
                  start: {
                    line: 1,
                    column: 16
                  },
                  end: {
                    line: 1,
                    column: 18
                  }
                }
              },
              kind: "init"
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 20
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 20
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 20
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 20
    }
  }
});

test("x = { x: 1, x: 2 }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "x",
                loc: {
                  start: {
                    line: 1,
                    column: 6
                  },
                  end: {
                    line: 1,
                    column: 7
                  }
                }
              },
              value: {
                type: "Literal",
                value: 1,
                loc: {
                  start: {
                    line: 1,
                    column: 9
                  },
                  end: {
                    line: 1,
                    column: 10
                  }
                }
              },
              kind: "init"
            },
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "x",
                loc: {
                  start: {
                    line: 1,
                    column: 12
                  },
                  end: {
                    line: 1,
                    column: 13
                  }
                }
              },
              value: {
                type: "Literal",
                value: 2,
                loc: {
                  start: {
                    line: 1,
                    column: 15
                  },
                  end: {
                    line: 1,
                    column: 16
                  }
                }
              },
              kind: "init"
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 18
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 18
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 18
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 18
    }
  }
});

test("x = { get width() { return m_width } }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "width",
                loc: {
                  start: {
                    line: 1,
                    column: 10
                  },
                  end: {
                    line: 1,
                    column: 15
                  }
                }
              },
              kind: "get",
              value: {
                type: "FunctionExpression",
                id: null,
                params: [],
                body: {
                  type: "BlockStatement",
                  body: [
                    {
                      type: "ReturnStatement",
                      argument: {
                        type: "Identifier",
                        name: "m_width",
                        loc: {
                          start: {
                            line: 1,
                            column: 27
                          },
                          end: {
                            line: 1,
                            column: 34
                          }
                        }
                      },
                      loc: {
                        start: {
                          line: 1,
                          column: 20
                        },
                        end: {
                          line: 1,
                          column: 34
                        }
                      }
                    }
                  ],
                  loc: {
                    start: {
                      line: 1,
                      column: 18
                    },
                    end: {
                      line: 1,
                      column: 36
                    }
                  }
                },
                loc: {
                  start: {
                    line: 1,
                    column: 15
                  },
                  end: {
                    line: 1,
                    column: 36
                  }
                }
              }
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 38
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 38
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 38
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 38
    }
  }
});

test("x = { get undef() {} }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "undef",
                loc: {
                  start: {
                    line: 1,
                    column: 10
                  },
                  end: {
                    line: 1,
                    column: 15
                  }
                }
              },
              kind: "get",
              value: {
                type: "FunctionExpression",
                id: null,
                params: [],
                body: {
                  type: "BlockStatement",
                  body: [],
                  loc: {
                    start: {
                      line: 1,
                      column: 18
                    },
                    end: {
                      line: 1,
                      column: 20
                    }
                  }
                },
                loc: {
                  start: {
                    line: 1,
                    column: 15
                  },
                  end: {
                    line: 1,
                    column: 20
                  }
                }
              }
            }
          ],
          loc: {
            start: {
              line: 1,
              column: 4
            },
            end: {
              line: 1,
              column: 22
            }
          }
        },
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: 1,
            column: 22
          }
        }
      },
      loc: {
        start: {
          line: 1,
          column: 0
        },
        end: {
          line: 1,
          column: 22
        }
      }
    }
  ],
  loc: {
    start: {
      line: 1,
      column: 0
    },
    end: {
      line: 1,
      column: 22
    }
  }
});

test("x = { get if() {} }", {
  type: "Program",
  body: [
    {
      type: "ExpressionStatement",
      expression: {
        type: "AssignmentExpression",
        operator: "=",
        left: {
          type: "Identifier",
          name: "x",
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: 1,
              column: 1
            }
          }
        },
        right: {
          type: "ObjectExpression",
          properties: [
            {
              type: "Property",
              key: {
                type: "Identifier",
                name: "if",
                loc: {
                  start: {
                    line: 1,
                    column: 10
                  },
                  end: {
                    line: 1,
                    column: 12
                  }
                }
              },
              kind: "get",
              value: {
                type: "FunctionExpression",
                id: null,
                params: [],
                body: {
                  type: "BlockStatement",
                  body: [],
                  loc: {
                    start: {
                      line: 1,
                      column: 15
                    },
                    end: {
                      line: 1,
                      column: 17
                    }
                  }
                },
                loc: {
                  start: {
                    line: 1,
                    column: 12
                  },
                  end: {