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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "core/layout/LayoutText.h" | 5 #include "core/layout/LayoutText.h" |
| 6 | 6 |
| 7 #include "core/layout/LayoutTestHelper.h" | 7 #include "core/layout/LayoutTestHelper.h" |
| 8 #include "core/layout/line/InlineTextBox.h" | 8 #include "core/layout/line/InlineTextBox.h" |
| 9 #include "testing/gtest/include/gtest/gtest.h" | 9 #include "testing/gtest/include/gtest/gtest.h" |
| 10 | 10 |
| 11 namespace blink { | 11 namespace blink { |
| 12 | 12 |
| 13 namespace { | 13 namespace { |
| 14 | 14 |
| 15 class LayoutTextTest : public RenderingTest { | 15 class LayoutTextTest : public RenderingTest { |
| 16 public: | 16 public: |
| 17 void SetBasicBody(const char* message) { | 17 void SetBasicBody(const char* message) { |
| 18 SetBodyInnerHTML(String::Format( | 18 SetBodyInnerHTML(String::Format( |
| 19 "<div id='target' style='font-size: 10px;'>%s</div>", message)); | 19 "<div id='target' style='font-size: 10px;'>%s</div>", message)); |
| 20 } | 20 } |
| 21 | 21 |
| 22 LayoutText* GetBasicText() { | 22 LayoutText* GetBasicText() { |
| 23 return ToLayoutText(GetLayoutObjectByElementId("target")->SlowFirstChild()); | 23 return ToLayoutText(GetLayoutObjectByElementId("target")->SlowFirstChild()); |
| 24 } | 24 } |
| 25 }; | 25 }; |
| 26 | 26 |
| 27 const char* g_k_taco_text = "Los Compadres Taco Truck"; | 27 const char kTacoText[] = "Los Compadres Taco Truck"; |
| 28 | 28 |
| 29 } // namespace | 29 } // namespace |
| 30 | 30 |
| 31 TEST_F(LayoutTextTest, WidthZeroFromZeroLength) { | 31 TEST_F(LayoutTextTest, WidthZeroFromZeroLength) { |
| 32 SetBasicBody(g_k_taco_text); | 32 SetBasicBody(kTacoText); |
| 33 ASSERT_EQ(0, GetBasicText()->Width(0u, 0u, LayoutUnit(), TextDirection::kLtr, | 33 ASSERT_EQ(0, GetBasicText()->Width(0u, 0u, LayoutUnit(), TextDirection::kLtr, |
| 34 false)); | 34 false)); |
| 35 } | 35 } |
| 36 | 36 |
| 37 TEST_F(LayoutTextTest, WidthMaxFromZeroLength) { | 37 TEST_F(LayoutTextTest, WidthMaxFromZeroLength) { |
| 38 SetBasicBody(g_k_taco_text); | 38 SetBasicBody(kTacoText); |
| 39 ASSERT_EQ(0, GetBasicText()->Width(std::numeric_limits<unsigned>::max(), 0u, | 39 ASSERT_EQ(0, GetBasicText()->Width(std::numeric_limits<unsigned>::max(), 0u, |
| 40 LayoutUnit(), TextDirection::kLtr, false)); | 40 LayoutUnit(), TextDirection::kLtr, false)); |
| 41 } | 41 } |
| 42 | 42 |
| 43 TEST_F(LayoutTextTest, WidthZeroFromMaxLength) { | 43 TEST_F(LayoutTextTest, WidthZeroFromMaxLength) { |
| 44 SetBasicBody(g_k_taco_text); | 44 SetBasicBody(kTacoText); |
| 45 float width = GetBasicText()->Width(0u, std::numeric_limits<unsigned>::max(), | 45 float width = GetBasicText()->Width(0u, std::numeric_limits<unsigned>::max(), |
| 46 LayoutUnit(), TextDirection::kLtr, false); | 46 LayoutUnit(), TextDirection::kLtr, false); |
| 47 // Width may vary by platform and we just want to make sure it's something | 47 // Width may vary by platform and we just want to make sure it's something |
| 48 // roughly reasonable. | 48 // roughly reasonable. |
| 49 ASSERT_GE(width, 100.f); | 49 ASSERT_GE(width, 100.f); |
| 50 ASSERT_LE(width, 160.f); | 50 ASSERT_LE(width, 160.f); |
| 51 } | 51 } |
| 52 | 52 |
| 53 TEST_F(LayoutTextTest, WidthMaxFromMaxLength) { | 53 TEST_F(LayoutTextTest, WidthMaxFromMaxLength) { |
| 54 SetBasicBody(g_k_taco_text); | 54 SetBasicBody(kTacoText); |
| 55 ASSERT_EQ(0, GetBasicText()->Width(std::numeric_limits<unsigned>::max(), | 55 ASSERT_EQ(0, GetBasicText()->Width(std::numeric_limits<unsigned>::max(), |
| 56 std::numeric_limits<unsigned>::max(), | 56 std::numeric_limits<unsigned>::max(), |
| 57 LayoutUnit(), TextDirection::kLtr, false)); | 57 LayoutUnit(), TextDirection::kLtr, false)); |
| 58 } | 58 } |
| 59 | 59 |
| 60 TEST_F(LayoutTextTest, WidthWithHugeLengthAvoidsOverflow) { | 60 TEST_F(LayoutTextTest, WidthWithHugeLengthAvoidsOverflow) { |
| 61 // The test case from http://crbug.com/647820 uses a 288-length string, so for | 61 // The test case from http://crbug.com/647820 uses a 288-length string, so for |
| 62 // posterity we follow that closely. | 62 // posterity we follow that closely. |
| 63 SetBodyInnerHTML( | 63 SetBodyInnerHTML( |
| 64 "<div " | 64 "<div " |
| (...skipping 23 matching lines...) Expand all Loading... |
| 88 SetBasicBody("x"); | 88 SetBasicBody("x"); |
| 89 // Width may vary by platform and we just want to make sure it's something | 89 // Width may vary by platform and we just want to make sure it's something |
| 90 // roughly reasonable. | 90 // roughly reasonable. |
| 91 const float width = | 91 const float width = |
| 92 GetBasicText()->Width(0u, 2u, LayoutUnit(), TextDirection::kLtr, false); | 92 GetBasicText()->Width(0u, 2u, LayoutUnit(), TextDirection::kLtr, false); |
| 93 ASSERT_GE(width, 4.f); | 93 ASSERT_GE(width, 4.f); |
| 94 ASSERT_LE(width, 20.f); | 94 ASSERT_LE(width, 20.f); |
| 95 } | 95 } |
| 96 | 96 |
| 97 } // namespace blink | 97 } // namespace blink |
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