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Side by Side Diff: ui/ios/uikit_util_unittest.mm

Issue 983413004: Eliminate ui/ios (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 9 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #import <Foundation/Foundation.h>
6
7 #include "base/basictypes.h"
8 #include "testing/platform_test.h"
9 #import "ui/ios/uikit_util.h"
10
11 namespace {
12
13 typedef PlatformTest UIKitUtilTest;
14
15 TEST_F(UIKitUtilTest, AlignValueToUpperPixel) {
16 CGFloat scale = [[UIScreen mainScreen] scale];
17 // Pick a few interesting values: already aligned, aligned on retina, and
18 // some unaligned values that would round differently. Ensure that all are
19 // "integer" values within <1 of the original value in the scaled space.
20 CGFloat test_values[] = { 10.0, 55.5, 3.1, 2.9 };
21 const CGFloat kMaxAlignDelta = 0.9999;
22 size_t value_count = arraysize(test_values);
23 for (unsigned int i = 0; i < value_count; ++i) {
24 CGFloat aligned = ui::AlignValueToUpperPixel(test_values[i]);
25 EXPECT_FLOAT_EQ(aligned * scale, floor(aligned * scale));
26 EXPECT_NEAR(aligned * scale, test_values[i] * scale, kMaxAlignDelta);
27 }
28 }
29
30 TEST_F(UIKitUtilTest, AlignSizeToUpperPixel) {
31 CGFloat scale = [[UIScreen mainScreen] scale];
32 // Pick a few interesting values: already aligned, aligned on retina, and
33 // some unaligned values that would round differently. Ensure that all are
34 // "integer" values within <1 of the original value in the scaled space.
35 CGFloat test_values[] = { 10.0, 55.5, 3.1, 2.9 };
36 const CGFloat kMaxAlignDelta = 0.9999;
37 size_t value_count = arraysize(test_values);
38 for (unsigned int i = 0; i < value_count; ++i) {
39 CGFloat width = test_values[i];
40 CGFloat height = test_values[(i + 1) % value_count];
41 CGSize alignedSize = ui::AlignSizeToUpperPixel(CGSizeMake(width, height));
42 EXPECT_FLOAT_EQ(floor(alignedSize.width * scale),
43 alignedSize.width * scale);
44 EXPECT_FLOAT_EQ(floor(alignedSize.height * scale),
45 alignedSize.height * scale);
46 EXPECT_NEAR(width * scale, alignedSize.width * scale, kMaxAlignDelta);
47 EXPECT_NEAR(height * scale, alignedSize.height * scale, kMaxAlignDelta);
48 }
49 }
50
51 } // namespace
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