/core/externals/google-toolbox-for-mac/iPhone/GTMUIImage+ResizeTest.m
Objective C | 284 lines | 209 code | 37 blank | 38 comment | 0 complexity | afba4d5a189577a11f17db73a3c19560 MD5 | raw file
1// 2// GTMUIImage+ResizeTest.m 3// 4// Copyright 2009 Google Inc. 5// 6// Licensed under the Apache License, Version 2.0 (the "License"); you may not 7// use this file except in compliance with the License. You may obtain a copy 8// of the License at 9// 10// http://www.apache.org/licenses/LICENSE-2.0 11// 12// Unless required by applicable law or agreed to in writing, software 13// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 14// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 15// License for the specific language governing permissions and limitations under 16// the License. 17// 18 19#import "GTMSenTestCase.h" 20#import "GTMNSObject+UnitTesting.h" 21#import "GTMUIImage+Resize.h" 22 23#define GTMUIImageResizeAssertImageEqual(imageObject, imageSuffix) \ 24 GTMAssertObjectImageEqualToImageNamed(imageObject, \ 25 @"GTMUIImage+Resize_" imageSuffix,\ 26 @"Resized image mismatched.") 27 28@interface GTMUIImage_ResizeTest : GTMTestCase 29- (UIImage *)testImageNamed:(NSString *)imageName; 30@end 31 32@implementation GTMUIImage_ResizeTest 33 34- (UIImage *)testImageNamed:(NSString *)imageName { 35 NSBundle *myBundle = [NSBundle bundleForClass:[self class]]; 36 NSString *imagePath = [myBundle pathForResource:imageName ofType:@"png"]; 37 UIImage *result = [UIImage imageWithContentsOfFile:imagePath]; 38 return result; 39} 40 41- (void)testNilImage { 42 UIImage *image = [[UIImage alloc] init]; 43 UIImage *actual = [image gtm_imageByResizingToSize:CGSizeMake(100, 100) 44 preserveAspectRatio:YES 45 trimToFit:NO]; 46 STAssertNil(actual, @"Invalid inputs should return nil"); 47} 48 49- (void)testInvalidInput { 50 UIImage *actual; 51 UIImage *image 52 = [UIImage imageNamed:@"GTMUIImage+Resize_100x50.png"]; 53 actual = [image gtm_imageByResizingToSize:CGSizeZero 54 preserveAspectRatio:YES 55 trimToFit:NO]; 56 STAssertNil(actual, @"CGSizeZero resize should be ignored."); 57 58 actual = [image gtm_imageByResizingToSize:CGSizeMake(0.1, 0.1) 59 preserveAspectRatio:YES 60 trimToFit:NO]; 61 STAssertNil(actual, @"Invalid size should be ignored."); 62 63 actual = [image gtm_imageByResizingToSize:CGSizeMake(-100, -100) 64 preserveAspectRatio:YES 65 trimToFit:NO]; 66 STAssertNil(actual, @"Invalid size should be ignored."); 67} 68 69- (void)testImageByResizingWithoutPreservingAspectRatio { 70 UIImage *actual = nil; 71 // Square image. 72 UIImage *originalImage = [self testImageNamed:@"GTMUIImage+Resize_100x100"]; 73 STAssertNotNil(originalImage, @"Unable to read image."); 74 75 // Resize with same aspect ratio. 76 CGSize size50x50 = CGSizeMake(50, 50); 77 actual = [originalImage gtm_imageByResizingToSize:size50x50 78 preserveAspectRatio:NO 79 trimToFit:NO]; 80 STAssertTrue(CGSizeEqualToSize([actual size], size50x50), 81 @"Resized image should equal size: %@ actual: %@", 82 NSStringFromCGSize(size50x50), 83 NSStringFromCGSize([actual size])); 84 GTMUIImageResizeAssertImageEqual(actual, @"100x100_to_50x50"); 85 86 // Resize with different aspect ratio 87 CGSize size60x40 = CGSizeMake(60, 40); 88 actual = [originalImage gtm_imageByResizingToSize:size60x40 89 preserveAspectRatio:NO 90 trimToFit:NO]; 91 STAssertTrue(CGSizeEqualToSize([actual size], size60x40), 92 @"Resized image should equal size: %@ actual: %@", 93 NSStringFromCGSize(size60x40), 94 NSStringFromCGSize([actual size])); 95 GTMUIImageResizeAssertImageEqual(actual, @"100x100_to_60x40"); 96 97 CGSize size40x60 = CGSizeMake(40, 60); 98 actual = [originalImage gtm_imageByResizingToSize:size40x60 99 preserveAspectRatio:NO 100 trimToFit:NO]; 101 STAssertTrue(CGSizeEqualToSize([actual size], size40x60), 102 @"Resized image should equal size: %@ actual: %@", 103 NSStringFromCGSize(size40x60), 104 NSStringFromCGSize([actual size])); 105 GTMUIImageResizeAssertImageEqual(actual, @"100x100_to_40x60"); 106} 107 108- (void)testImageByResizingPreservingAspectRatioWithoutClip { 109 UIImage *actual = nil; 110 UIImage *landscapeImage = [self testImageNamed:@"GTMUIImage+Resize_100x50"]; 111 STAssertNotNil(landscapeImage, @"Unable to read image."); 112 113 // Landscape resize to 50x50, but clipped to 50x25. 114 CGSize size50x50 = CGSizeMake(50, 50); 115 CGSize expected50x25 = CGSizeMake(50, 25); 116 actual = [landscapeImage gtm_imageByResizingToSize:size50x50 117 preserveAspectRatio:YES 118 trimToFit:NO]; 119 STAssertTrue(CGSizeEqualToSize([actual size], expected50x25), 120 @"Resized image should equal size: %@ actual: %@", 121 NSStringFromCGSize(expected50x25), 122 NSStringFromCGSize([actual size])); 123 GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_50x50_noclip"); 124 125 // Landscape resize to 60x40, but clipped to 60x30. 126 CGSize size60x40 = CGSizeMake(60, 40); 127 CGSize expected60x30 = CGSizeMake(60, 30); 128 129 actual = [landscapeImage gtm_imageByResizingToSize:size60x40 130 preserveAspectRatio:YES 131 trimToFit:NO]; 132 STAssertTrue(CGSizeEqualToSize([actual size], expected60x30), 133 @"Resized image should equal size: %@ actual: %@", 134 NSStringFromCGSize(expected60x30), 135 NSStringFromCGSize([actual size])); 136 GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_60x40_noclip"); 137 138 // Landscape resize to 40x60, but clipped to 40x20. 139 CGSize expected40x20 = CGSizeMake(40, 20); 140 CGSize size40x60 = CGSizeMake(40, 60); 141 actual = [landscapeImage gtm_imageByResizingToSize:size40x60 142 preserveAspectRatio:YES 143 trimToFit:NO]; 144 STAssertTrue(CGSizeEqualToSize([actual size], expected40x20), 145 @"Resized image should equal size: %@ actual: %@", 146 NSStringFromCGSize(expected40x20), 147 NSStringFromCGSize([actual size])); 148 GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_40x60_noclip"); 149 150 // Portrait Image 151 UIImage *portraitImage = [self testImageNamed:@"GTMUIImage+Resize_50x100"]; 152 153 // Portrait resize to 50x50, but clipped to 25x50. 154 CGSize expected25x50 = CGSizeMake(25, 50); 155 actual = [portraitImage gtm_imageByResizingToSize:size50x50 156 preserveAspectRatio:YES 157 trimToFit:NO]; 158 STAssertTrue(CGSizeEqualToSize([actual size], expected25x50), 159 @"Resized image should equal size: %@ actual: %@", 160 NSStringFromCGSize(expected25x50), 161 NSStringFromCGSize([actual size])); 162 GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_50x50_noclip"); 163 164 // Portrait resize to 60x40, but clipped to 20x40. 165 CGSize expected20x40 = CGSizeMake(20, 40); 166 actual = [portraitImage gtm_imageByResizingToSize:size60x40 167 preserveAspectRatio:YES 168 trimToFit:NO]; 169 STAssertTrue(CGSizeEqualToSize([actual size], expected20x40), 170 @"Resized image should equal size: %@ actual: %@", 171 NSStringFromCGSize(expected20x40), 172 NSStringFromCGSize([actual size])); 173 GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_60x40_noclip"); 174 175 // Portrait resize to 40x60, but clipped to 30x60. 176 CGSize expected30x60 = CGSizeMake(30, 60); 177 actual = [portraitImage gtm_imageByResizingToSize:size40x60 178 preserveAspectRatio:YES 179 trimToFit:NO]; 180 STAssertTrue(CGSizeEqualToSize([actual size], expected30x60), 181 @"Resized image should equal size: %@ actual: %@", 182 NSStringFromCGSize(expected30x60), 183 NSStringFromCGSize([actual size])); 184 GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_40x60_noclip"); 185} 186 187- (void)testImageByResizingPreservingAspectRatioWithClip { 188 UIImage *actual = nil; 189 UIImage *landscapeImage = [self testImageNamed:@"GTMUIImage+Resize_100x50"]; 190 STAssertNotNil(landscapeImage, @"Unable to read image."); 191 192 // Landscape resize to 50x50 193 CGSize size50x50 = CGSizeMake(50, 50); 194 actual = [landscapeImage gtm_imageByResizingToSize:size50x50 195 preserveAspectRatio:YES 196 trimToFit:YES]; 197 STAssertTrue(CGSizeEqualToSize([actual size], size50x50), 198 @"Resized image should equal size: %@ actual: %@", 199 NSStringFromCGSize(size50x50), 200 NSStringFromCGSize([actual size])); 201 GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_50x50_clip"); 202 203 // Landscape resize to 60x40 204 CGSize size60x40 = CGSizeMake(60, 40); 205 actual = [landscapeImage gtm_imageByResizingToSize:size60x40 206 preserveAspectRatio:YES 207 trimToFit:YES]; 208 STAssertTrue(CGSizeEqualToSize([actual size], size60x40), 209 @"Resized image should equal size: %@ actual: %@", 210 NSStringFromCGSize(size60x40), 211 NSStringFromCGSize([actual size])); 212 GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_60x40_clip"); 213 214 // Landscape resize to 40x60 215 CGSize size40x60 = CGSizeMake(40, 60); 216 actual = [landscapeImage gtm_imageByResizingToSize:size40x60 217 preserveAspectRatio:YES 218 trimToFit:YES]; 219 STAssertTrue(CGSizeEqualToSize([actual size], size40x60), 220 @"Resized image should equal size: %@ actual: %@", 221 NSStringFromCGSize(size40x60), 222 NSStringFromCGSize([actual size])); 223 GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_40x60_clip"); 224 225 // Portrait Image. 226 UIImage *portraitImage = [self testImageNamed:@"GTMUIImage+Resize_50x100"]; 227 228 // Portrait resize to 50x50 229 actual = [portraitImage gtm_imageByResizingToSize:size50x50 230 preserveAspectRatio:YES 231 trimToFit:YES]; 232 STAssertTrue(CGSizeEqualToSize([actual size], size50x50), 233 @"Resized image should equal size: %@ actual: %@", 234 NSStringFromCGSize(size50x50), 235 NSStringFromCGSize([actual size])); 236 GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_50x50_clip"); 237 238 // Portrait resize to 60x40 239 actual = [portraitImage gtm_imageByResizingToSize:size60x40 240 preserveAspectRatio:YES 241 trimToFit:YES]; 242 STAssertTrue(CGSizeEqualToSize([actual size], size60x40), 243 @"Resized image should equal size: %@ actual: %@", 244 NSStringFromCGSize(size60x40), 245 NSStringFromCGSize([actual size])); 246 GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_60x40_clip"); 247 248 // Portrait resize to 40x60. 249 actual = [portraitImage gtm_imageByResizingToSize:size40x60 250 preserveAspectRatio:YES 251 trimToFit:YES]; 252 STAssertTrue(CGSizeEqualToSize([actual size], size40x60), 253 @"Resized image should equal size: %@ actual: %@", 254 NSStringFromCGSize(size40x60), 255 NSStringFromCGSize([actual size])); 256 GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_40x60_clip"); 257} 258 259- (void)testImageByRotating { 260 UIImage *actual = nil; 261 UIImage *landscapeImage = [self testImageNamed:@"GTMUIImage+Resize_100x50"]; 262 STAssertNotNil(landscapeImage, @"Unable to read image."); 263 264 // Rotate 90 degrees. 265 actual = [landscapeImage gtm_imageByRotating:UIImageOrientationRight]; 266 GTMUIImageResizeAssertImageEqual(actual, @"50x100"); 267 268 // Rotate 180 degrees. 269 actual = [landscapeImage gtm_imageByRotating:UIImageOrientationDown]; 270 GTMUIImageResizeAssertImageEqual(actual, 271 @"100x50_flipped"); 272 273 274 // Rotate 270 degrees. 275 actual = [landscapeImage gtm_imageByRotating:UIImageOrientationLeft]; 276 GTMUIImageResizeAssertImageEqual(actual, 277 @"50x100_flipped"); 278 279 // Rotate 360 degrees. 280 actual = [landscapeImage gtm_imageByRotating:UIImageOrientationUp]; 281 GTMUIImageResizeAssertImageEqual(actual, @"100x50"); 282} 283 284@end