/deps/v8/test/mjsunit/debug-stepin-positions.js
JavaScript | 225 lines | 149 code | 36 blank | 40 comment | 9 complexity | 1962db6e639d9966079d55228ab1fe97 MD5 | raw file
- // Copyright 2008 the V8 project authors. All rights reserved.
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions are
- // met:
- //
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following
- // disclaimer in the documentation and/or other materials provided
- // with the distribution.
- // * Neither the name of Google Inc. nor the names of its
- // contributors may be used to endorse or promote products derived
- // from this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- // Flags: --expose-debug-as debug --nocrankshaft
- // Get the Debug object exposed from the debug context global object.
- Debug = debug.Debug
- function DebuggerStatement() {
- debugger; /*pause*/
- }
- function TestCase(fun, frame_number) {
- var exception = false;
- var codeSnippet = undefined;
- var resultPositions = undefined;
- function listener(event, exec_state, event_data, data) {
- try {
- if (event == Debug.DebugEvent.Break ||
- event == Debug.DebugEvent.Exception) {
- Debug.setListener(null);
- assertHasLineMark(/pause/, exec_state.frame(0));
- assertHasLineMark(/positions/, exec_state.frame(frame_number));
- var frame = exec_state.frame(frame_number);
- codeSnippet = frame.sourceLineText();
- resultPositions = frame.stepInPositions();
- }
- } catch (e) {
- exception = e
- }
- function assertHasLineMark(mark, frame) {
- var line = frame.sourceLineText();
- if (!mark.exec(frame.sourceLineText())) {
- throw new Error("Line " + line + " should contain mark " + mark);
- }
- }
- }
- Debug.setListener(listener);
- fun();
- Debug.setListener(null);
- assertTrue(!exception, exception);
- var expectedPositions = {};
- var markPattern = new RegExp("/\\*#\\*/", "g");
- var matchResult;
- while ( (matchResult = markPattern.exec(codeSnippet)) ) {
- expectedPositions[matchResult.index] = true;
- }
- print(codeSnippet);
- var decoratedResult = codeSnippet;
- function replaceStringRange(s, pos, substitute) {
- return s.substring(0, pos) + substitute +
- s.substring(pos + substitute.length);
- }
- var markLength = 5;
- var unexpectedPositionFound = false;
- for (var i = 0; i < resultPositions.length; i++) {
- var col = resultPositions[i].position.column - markLength;
- if (expectedPositions[col]) {
- delete expectedPositions[col];
- decoratedResult = replaceStringRange(decoratedResult, col, "*YES*");
- } else {
- decoratedResult = replaceStringRange(decoratedResult, col, "!BAD!");
- unexpectedPositionFound = true;
- }
- }
- print(decoratedResult);
- for (var n in expectedPositions) {
- assertTrue(false, "Some positions are not reported: " + decoratedResult);
- break;
- }
- assertFalse(unexpectedPositionFound, "Found unexpected position: " +
- decoratedResult);
- }
- function TestCaseWithDebugger(fun) {
- TestCase(fun, 1);
- }
- function TestCaseWithBreakpoint(fun, line_number, frame_number) {
- var breakpointId = Debug.setBreakPoint(fun, line_number);
- TestCase(fun, frame_number);
- Debug.clearBreakPoint(breakpointId);
- }
- function TestCaseWithException(fun, frame_number) {
- Debug.setBreakOnException();
- TestCase(fun, frame_number);
- Debug.clearBreakOnException();
- }
- // Test cases.
- // Step in position, when the function call that we are standing at is already
- // being executed.
- var fun = function() {
- function g(p) {
- throw String(p); /*pause*/
- }
- try {
- var res = [ g(1), /*#*/g(2) ]; /*positions*/
- } catch (e) {
- }
- };
- TestCaseWithBreakpoint(fun, 2, 1);
- TestCaseWithException(fun, 1);
- // Step in position, when the function call that we are standing at is raising
- // an exception.
- var fun = function() {
- var o = {
- g: function(p) {
- throw p;
- }
- };
- try {
- var res = [ /*#*/f(1), /*#*/g(2) ]; /*pause, positions*/
- } catch (e) {
- }
- };
- TestCaseWithException(fun, 0);
- // Step-in position, when already paused almost on the first call site.
- var fun = function() {
- function g(p) {
- throw p;
- }
- try {
- var res = [ /*#*/g(Math.rand), /*#*/g(2) ]; /*pause, positions*/
- } catch (e) {
- }
- };
- TestCaseWithBreakpoint(fun, 5, 0);
- // Step-in position, when already paused on the first call site.
- var fun = function() {
- function g() {
- throw "Debug";
- }
- try {
- var res = [ /*#*/g(), /*#*/g() ]; /*pause, positions*/
- } catch (e) {
- }
- };
- TestCaseWithBreakpoint(fun, 5, 0);
- // Method calls.
- var fun = function() {
- var data = {
- a: function() {}
- };
- var res = [ DebuggerStatement(), data./*#*/a(), data[/*#*/String("a")]/*#*/(), data["a"]/*#*/(), data.a, data["a"] ]; /*positions*/
- };
- TestCaseWithDebugger(fun);
- // Function call on a value.
- var fun = function() {
- function g(p) {
- return g;
- }
- var res = [ DebuggerStatement(), /*#*/g(2), /*#*/g(2)/*#*/(3), /*#*/g(0)/*#*/(0)/*#*/(g) ]; /*positions*/
- };
- TestCaseWithDebugger(fun);
- // Local function call, closure function call,
- // local function construction call.
- var fun = (function(p) {
- return function() {
- function f(a, b) {
- }
- var res = /*#*/f(DebuggerStatement(), /*#*/p(/*#*/new f())); /*positions*/
- };
- })(Object);
- TestCaseWithDebugger(fun);
- // Global function, global object construction, calls before pause point.
- var fun = (function(p) {
- return function() {
- var res = [ Math.abs(new Object()), DebuggerStatement(), Math./*#*/abs(4), /*#*/new Object()./*#*/toString() ]; /*positions*/
- };
- })(Object);
- TestCaseWithDebugger(fun);