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Diffstat (limited to 'iPhone/GTMUIImage+ResizeTest.m')
| -rw-r--r-- | iPhone/GTMUIImage+ResizeTest.m | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/iPhone/GTMUIImage+ResizeTest.m b/iPhone/GTMUIImage+ResizeTest.m new file mode 100644 index 0000000..4678511 --- /dev/null +++ b/iPhone/GTMUIImage+ResizeTest.m @@ -0,0 +1,256 @@ +// +// GTMUIImage+ResizeTest.m +// +// Copyright 2009 Google Inc. +// +// Licensed under the Apache License, Version 2.0 (the "License"); you may not +// use this file except in compliance with the License. You may obtain a copy +// of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +// License for the specific language governing permissions and limitations under +// the License. +// + +#import "GTMNSObject+UnitTesting.h" +#import "GTMSenTestCase.h" +#import "GTMUIImage+Resize.h" + +#define GTMUIImageResizeAssertImageEqual(imageObject, imageSuffix) \ + GTMAssertObjectImageEqualToImageNamed(imageObject, \ + @"GTMUIImage+Resize_" imageSuffix,\ + @"Resized image mismatched.") + +@interface GTMUIImage_ResizeTest : SenTestCase +@end + +@implementation GTMUIImage_ResizeTest + +- (void)testNilImage { + UIImage *image = [[UIImage alloc] init]; + UIImage *actual = [image gtm_imageByResizingToSize:CGSizeMake(100, 100) + preserveAspectRatio:YES + trimToFit:NO]; + STAssertNil(actual, @"Invalid inputs should return nil"); +} + +- (void)testInvalidInput { + UIImage *actual; + UIImage *image + = [UIImage imageNamed:@"GTMUIImage+Resize_100x50.png"]; + actual = [image gtm_imageByResizingToSize:CGSizeZero + preserveAspectRatio:YES + trimToFit:NO]; + STAssertNil(actual, @"CGSizeZero resize should be ignored."); + + actual = [image gtm_imageByResizingToSize:CGSizeMake(0.1, 0.1) + preserveAspectRatio:YES + trimToFit:NO]; + STAssertNil(actual, @"Invalid size should be ignored."); + + actual = [image gtm_imageByResizingToSize:CGSizeMake(-100, -100) + preserveAspectRatio:YES + trimToFit:NO]; + STAssertNil(actual, @"Invalid size should be ignored."); +} + +- (void)testImageByResizingWithoutPreservingAspectRatio { + UIImage *actual = nil; + // Square image. + UIImage *originalImage + = [UIImage imageNamed:@"GTMUIImage+Resize_100x100.png"]; + STAssertNotNil(originalImage, @"Unable to read image."); + + // Resize with same aspect ratio. + CGSize size50x50 = CGSizeMake(50, 50); + actual = [originalImage gtm_imageByResizingToSize:size50x50 + preserveAspectRatio:NO + trimToFit:NO]; + STAssertTrue(CGSizeEqualToSize([actual size], size50x50), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(size50x50), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"100x100_to_50x50"); + + // Resize with different aspect ratio + CGSize size60x40 = CGSizeMake(60, 40); + actual = [originalImage gtm_imageByResizingToSize:size60x40 + preserveAspectRatio:NO + trimToFit:NO]; + STAssertTrue(CGSizeEqualToSize([actual size], size60x40), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(size60x40), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"100x100_to_60x40"); + + CGSize size40x60 = CGSizeMake(40, 60); + actual = [originalImage gtm_imageByResizingToSize:size40x60 + preserveAspectRatio:NO + trimToFit:NO]; + STAssertTrue(CGSizeEqualToSize([actual size], size40x60), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(size40x60), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"100x100_to_40x60"); +} + +- (void)testImageByResizingPreservingAspectRatioWithoutClip { + UIImage *actual = nil; + UIImage *landscapeImage = + [UIImage imageNamed:@"GTMUIImage+Resize_100x50.png"]; + STAssertNotNil(landscapeImage, @"Unable to read image."); + + // Landscape resize to 50x50, but clipped to 50x25. + CGSize size50x50 = CGSizeMake(50, 50); + CGSize expected50x25 = CGSizeMake(50, 25); + actual = [landscapeImage gtm_imageByResizingToSize:size50x50 + preserveAspectRatio:YES + trimToFit:NO]; + STAssertTrue(CGSizeEqualToSize([actual size], expected50x25), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(expected50x25), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_50x50_noclip"); + + // Landscape resize to 60x40, but clipped to 60x30. + CGSize size60x40 = CGSizeMake(60, 40); + CGSize expected60x30 = CGSizeMake(60, 30); + + actual = [landscapeImage gtm_imageByResizingToSize:size60x40 + preserveAspectRatio:YES + trimToFit:NO]; + STAssertTrue(CGSizeEqualToSize([actual size], expected60x30), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(expected60x30), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_60x40_noclip"); + + // Landscape resize to 40x60, but clipped to 40x20. + CGSize expected40x20 = CGSizeMake(40, 20); + CGSize size40x60 = CGSizeMake(40, 60); + actual = [landscapeImage gtm_imageByResizingToSize:size40x60 + preserveAspectRatio:YES + trimToFit:NO]; + STAssertTrue(CGSizeEqualToSize([actual size], expected40x20), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(expected40x20), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_40x60_noclip"); + + // Portrait Image + UIImage *portraitImage = + [UIImage imageNamed:@"GTMUIImage+Resize_50x100.png"]; + + // Portrait resize to 50x50, but clipped to 25x50. + CGSize expected25x50 = CGSizeMake(25, 50); + actual = [portraitImage gtm_imageByResizingToSize:size50x50 + preserveAspectRatio:YES + trimToFit:NO]; + STAssertTrue(CGSizeEqualToSize([actual size], expected25x50), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(expected25x50), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_50x50_noclip"); + + // Portrait resize to 60x40, but clipped to 20x40. + CGSize expected20x40 = CGSizeMake(20, 40); + actual = [portraitImage gtm_imageByResizingToSize:size60x40 + preserveAspectRatio:YES + trimToFit:NO]; + STAssertTrue(CGSizeEqualToSize([actual size], expected20x40), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(expected20x40), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_60x40_noclip"); + + // Portrait resize to 40x60, but clipped to 30x60. + CGSize expected30x60 = CGSizeMake(30, 60); + actual = [portraitImage gtm_imageByResizingToSize:size40x60 + preserveAspectRatio:YES + trimToFit:NO]; + STAssertTrue(CGSizeEqualToSize([actual size], expected30x60), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(expected30x60), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_40x60_noclip"); +} + +- (void)testImageByResizingPreservingAspectRatioWithClip { + UIImage *actual = nil; + UIImage *landscapeImage = + [UIImage imageNamed:@"GTMUIImage+Resize_100x50.png"]; + STAssertNotNil(landscapeImage, @"Unable to read image."); + + // Landscape resize to 50x50 + CGSize size50x50 = CGSizeMake(50, 50); + actual = [landscapeImage gtm_imageByResizingToSize:size50x50 + preserveAspectRatio:YES + trimToFit:YES]; + STAssertTrue(CGSizeEqualToSize([actual size], size50x50), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(size50x50), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_50x50_clip"); + + // Landscape resize to 60x40 + CGSize size60x40 = CGSizeMake(60, 40); + actual = [landscapeImage gtm_imageByResizingToSize:size60x40 + preserveAspectRatio:YES + trimToFit:YES]; + STAssertTrue(CGSizeEqualToSize([actual size], size60x40), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(size60x40), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_60x40_clip"); + + // Landscape resize to 40x60 + CGSize size40x60 = CGSizeMake(40, 60); + actual = [landscapeImage gtm_imageByResizingToSize:size40x60 + preserveAspectRatio:YES + trimToFit:YES]; + STAssertTrue(CGSizeEqualToSize([actual size], size40x60), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(size40x60), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"100x50_to_40x60_clip"); + + // Portrait Image. + UIImage *portraitImage = + [UIImage imageNamed:@"GTMUIImage+Resize_50x100.png"]; + + // Portrait resize to 50x50 + actual = [portraitImage gtm_imageByResizingToSize:size50x50 + preserveAspectRatio:YES + trimToFit:YES]; + STAssertTrue(CGSizeEqualToSize([actual size], size50x50), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(size50x50), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_50x50_clip"); + + // Portrait resize to 60x40 + actual = [portraitImage gtm_imageByResizingToSize:size60x40 + preserveAspectRatio:YES + trimToFit:YES]; + STAssertTrue(CGSizeEqualToSize([actual size], size60x40), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(size60x40), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_60x40_clip"); + + // Portrait resize to 40x60. + actual = [portraitImage gtm_imageByResizingToSize:size40x60 + preserveAspectRatio:YES + trimToFit:YES]; + STAssertTrue(CGSizeEqualToSize([actual size], size40x60), + @"Resized image should equal size: %@ actual: %@", + NSStringFromCGSize(size40x60), + NSStringFromCGSize([actual size])); + GTMUIImageResizeAssertImageEqual(actual, @"50x100_to_40x60_clip"); +} + +@end |