Replace LayoutTableCell::AbsoluteColumnIndex() with EffectiveColumnIndex()

third_party/WebKit/Source/core/layout/LayoutTableTest.cpp

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/layout/LayoutTable.h"
+
+#include "core/layout/LayoutTableCol.h"
+#include "core/layout/LayoutTestHelper.h"
+
+namespace blink {
+
+namespace {
+
+class LayoutTableTest : public RenderingTest {
+ protected:
+  LayoutTable* GetTableByElementId(const char* id) {
+    return ToLayoutTable(GetLayoutObjectByElementId(id));
+  }
+};
+
+TEST_F(LayoutTableTest, EffectiveColumnAndAbsoluteColumn) {
+  SetBodyInnerHTML(
+      "<table id ='table'>"
+      "  <tr><td colspan='5'></td></tr>"
+      "  <tr><td colspan='3'></td><td colspan=5'></td></tr>"
+      "  <tr><td></td></tr>"
+      "</table>");
+
+  auto* table = GetTableByElementId("table");
+  EXPECT_EQ(4u, table->NumEffectiveColumns());
+
+  EXPECT_EQ(0u, table->EffectiveColumnToAbsoluteColumn(0));
+  EXPECT_EQ(1u, table->EffectiveColumnToAbsoluteColumn(1));
+  EXPECT_EQ(3u, table->EffectiveColumnToAbsoluteColumn(2));
+  EXPECT_EQ(5u, table->EffectiveColumnToAbsoluteColumn(3));
+  EXPECT_EQ(8u, table->EffectiveColumnToAbsoluteColumn(4));
+
+  EXPECT_EQ(0u, table->AbsoluteColumnToEffectiveColumn(0));
+  EXPECT_EQ(1u, table->AbsoluteColumnToEffectiveColumn(1));
+  EXPECT_EQ(1u, table->AbsoluteColumnToEffectiveColumn(2));
+  EXPECT_EQ(2u, table->AbsoluteColumnToEffectiveColumn(3));
+  EXPECT_EQ(2u, table->AbsoluteColumnToEffectiveColumn(4));
+  EXPECT_EQ(3u, table->AbsoluteColumnToEffectiveColumn(5));
+  EXPECT_EQ(3u, table->AbsoluteColumnToEffectiveColumn(6));
+  EXPECT_EQ(3u, table->AbsoluteColumnToEffectiveColumn(7));
+  EXPECT_EQ(4u, table->AbsoluteColumnToEffectiveColumn(8));
+}
+
+TEST_F(LayoutTableTest, EffectiveColumnAndAbsoluteColumnWithCols) {
+  SetBodyInnerHTML(
+      "<table id ='table'>"
+      "  <colgroup>"
+      "    <col>"
+      "    <col span='3'>"
+      "    <col span='2'>"
+      "  </colgroup>"
+      "  <tr>"
+      "    <td></td>"
+      "    <td colspan='2'></td>"
+      "    <td></td>"
+      "    <td colspan='2'></td>"
+      "  </tr>"
+      "</table>");
+
+  auto* table = GetTableByElementId("table");
+  EXPECT_EQ(4u, table->NumEffectiveColumns());
+
+  EXPECT_EQ(0u, table->EffectiveColumnToAbsoluteColumn(0));
+  EXPECT_EQ(1u, table->EffectiveColumnToAbsoluteColumn(1));
+  EXPECT_EQ(3u, table->EffectiveColumnToAbsoluteColumn(2));
+  EXPECT_EQ(4u, table->EffectiveColumnToAbsoluteColumn(3));
+  EXPECT_EQ(6u, table->EffectiveColumnToAbsoluteColumn(4));
+
+  EXPECT_EQ(0u, table->AbsoluteColumnToEffectiveColumn(0));
+  EXPECT_EQ(1u, table->AbsoluteColumnToEffectiveColumn(1));
+  EXPECT_EQ(1u, table->AbsoluteColumnToEffectiveColumn(2));
+  EXPECT_EQ(2u, table->AbsoluteColumnToEffectiveColumn(3));
+  EXPECT_EQ(3u, table->AbsoluteColumnToEffectiveColumn(4));
+  EXPECT_EQ(3u, table->AbsoluteColumnToEffectiveColumn(5));
+  EXPECT_EQ(4u, table->AbsoluteColumnToEffectiveColumn(6));
+}
+
+TEST_F(LayoutTableTest, ColAndColGroupAtEffectiveColumn) {
+  SetBodyInnerHTML(
+      "<table id ='table'>"
+      "  <colgroup id='colgroup1'>"
+      "    <col id='col1a'>"
+      "    <col id='col1b'>"
+      "  </colgroup>"
+      "  <colgroup id='colgroup2'>"
+      "    <col id='col2' span='2'>"
+      "  </colgroup>"
+      "  <colgroup id='colgroup3' span='2'></colgroup>"
+      "  <colgroup id='colgroup4' span='2'></colgroup>"
+      "  <col id='col5' span='2'>"
+      "  <tr>"
+      "    <td colspan='2'></td>"  // spans col1a and col1b
+      "    <td></td><td></td>"     // split col2 into two effective columns
+      "    <td colspan=2'></td>"   // matches col3
+      "    <td colspan=3'></td>"   // matches start but not end of col4
+      "    <td></td>"              // matches end but not start of col5
+      "  </tr>"
+      "</table>");
+  // absolute  | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
+  // effective |   0   | 1 | 2 |   3   |     4     | 5 |
+  // colgroup  |   1   |   2   |   3   |   4   |       |
+  // col       | a | b |   2   |       |       |   5   |
+  // td        |       |   |   |       |           |   |
+
+  auto* table = GetTableByElementId("table");
+  EXPECT_EQ(6u, table->NumEffectiveColumns());
+
+  auto c0 = table->ColAndColGroupAtEffectiveColumn(0);
+  EXPECT_EQ(GetLayoutObjectByElementId("colgroup1"), c0.colgroup);
+  EXPECT_EQ(GetLayoutObjectByElementId("col1a"), c0.col);
+  EXPECT_EQ(c0.col, c0.InnermostColOrColGroup());
+  EXPECT_TRUE(c0.adjoins_start_border_of_col_group);
+  EXPECT_TRUE(c0.adjoins_end_border_of_col_group);
+
+  auto c1 = table->ColAndColGroupAtEffectiveColumn(1);
+  EXPECT_EQ(GetLayoutObjectByElementId("colgroup2"), c1.colgroup);
+  EXPECT_EQ(GetLayoutObjectByElementId("col2"), c1.col);
+  EXPECT_EQ(c1.col, c1.InnermostColOrColGroup());
+  EXPECT_TRUE(c1.adjoins_start_border_of_col_group);
+  EXPECT_FALSE(c1.adjoins_end_border_of_col_group);
+
+  auto c2 = table->ColAndColGroupAtEffectiveColumn(2);
+  EXPECT_EQ(GetLayoutObjectByElementId("colgroup2"), c2.colgroup);
+  EXPECT_EQ(GetLayoutObjectByElementId("col2"), c2.col);
+  EXPECT_EQ(c2.col, c2.InnermostColOrColGroup());
+  EXPECT_FALSE(c2.adjoins_start_border_of_col_group);
+  EXPECT_TRUE(c2.adjoins_end_border_of_col_group);
+
+  auto c3 = table->ColAndColGroupAtEffectiveColumn(3);
+  EXPECT_EQ(GetLayoutObjectByElementId("colgroup3"), c3.colgroup);
+  EXPECT_EQ(nullptr, c3.col);
+  EXPECT_EQ(c3.colgroup, c3.InnermostColOrColGroup());
+  EXPECT_TRUE(c3.adjoins_start_border_of_col_group);
+  EXPECT_TRUE(c3.adjoins_end_border_of_col_group);
+
+  auto c4 = table->ColAndColGroupAtEffectiveColumn(4);
+  EXPECT_EQ(GetLayoutObjectByElementId("colgroup4"), c4.colgroup);
+  EXPECT_EQ(nullptr, c4.col);
+  EXPECT_EQ(c4.colgroup, c4.InnermostColOrColGroup());
+  EXPECT_TRUE(c4.adjoins_start_border_of_col_group);
+  EXPECT_FALSE(c4.adjoins_end_border_of_col_group);
+
+  auto c5 = table->ColAndColGroupAtEffectiveColumn(5);
+  EXPECT_EQ(GetLayoutObjectByElementId("col5")->Parent(), c5.colgroup);
+  EXPECT_EQ(GetLayoutObjectByElementId("col5"), c5.col);
+  EXPECT_EQ(c5.col, c5.InnermostColOrColGroup());
+  EXPECT_FALSE(c5.adjoins_start_border_of_col_group);
+  EXPECT_TRUE(c5.adjoins_end_border_of_col_group);
+
+  // Beyond the end of columns.
+  auto c6 = table->ColAndColGroupAtEffectiveColumn(6);
+  EXPECT_EQ(nullptr, c6.colgroup);
+  EXPECT_EQ(nullptr, c6.col);
+  EXPECT_EQ(nullptr, c6.InnermostColOrColGroup());
+  EXPECT_FALSE(c6.adjoins_start_border_of_col_group);
+  EXPECT_FALSE(c6.adjoins_end_border_of_col_group);
+}
+
+TEST_F(LayoutTableTest, ColAndColGroupAtEffectiveColumnSingleEffectiveColumn) {
+  SetBodyInnerHTML(
+      "<table id ='table'>"
+      "  <colgroup id='colgroup'>"
+      "    <col id='col'>"
+      "    <col span='2'>"
+      "    <col span='3'>"
+      "  </colgroup>"
+      "  <tr>"
+      "    <td colspan='6'></td>"
+      "  </tr>"
+      "</table>");
+  // absolute  | 0 | 1 | 2 | 3 | 4 | 5 |
+  // effective |           0           |
+  // colgroup  |                       |
+  // col       |   |       |           |
+  // td        |                       |
+
+  auto* table = GetTableByElementId("table");
+  EXPECT_EQ(1u, table->NumEffectiveColumns());
+
+  auto c0 = table->ColAndColGroupAtEffectiveColumn(0);
+  EXPECT_EQ(GetLayoutObjectByElementId("colgroup"), c0.colgroup);
+  EXPECT_EQ(GetLayoutObjectByElementId("col"), c0.col);
+  EXPECT_EQ(c0.col, c0.InnermostColOrColGroup());
+  EXPECT_TRUE(c0.adjoins_start_border_of_col_group);
+  EXPECT_TRUE(c0.adjoins_end_border_of_col_group);
+
+  auto c1 = table->ColAndColGroupAtEffectiveColumn(1);
+  EXPECT_EQ(nullptr, c1.colgroup);
+  EXPECT_EQ(nullptr, c1.col);
+  EXPECT_EQ(nullptr, c1.InnermostColOrColGroup());
+  EXPECT_FALSE(c1.adjoins_start_border_of_col_group);
+  EXPECT_FALSE(c1.adjoins_end_border_of_col_group);
+}
+
+TEST_F(LayoutTableTest,
+       ColAndColGroupAtEffectiveColumnSingleEffectiveColumnUnmatchedEnd) {
+  SetBodyInnerHTML(
+      "<table id ='table'>"
+      "  <colgroup id='colgroup'>"
+      "    <col id='col'>"
+      "    <col span='2'>"
+      "    <col span='3'>"
+      "  </colgroup>"
+      "  <tr>"
+      "    <td colspan='5'></td>"
+      "  </tr>"
+      "</table>");
+  // absolute  | 0 | 1 | 2 | 3 | 4 |
+  // effective |           0       |
+  // colgroup  |                       |
+  // col       |   |       |           |
+  // td        |                   |
+
+  auto* table = GetTableByElementId("table");
+  EXPECT_EQ(1u, table->NumEffectiveColumns());
+
+  auto c0 = table->ColAndColGroupAtEffectiveColumn(0);
+  EXPECT_EQ(GetLayoutObjectByElementId("colgroup"), c0.colgroup);
+  EXPECT_EQ(GetLayoutObjectByElementId("col"), c0.col);
+  EXPECT_EQ(c0.col, c0.InnermostColOrColGroup());
+  EXPECT_TRUE(c0.adjoins_start_border_of_col_group);
+  EXPECT_FALSE(c0.adjoins_end_border_of_col_group);
+
+  auto c1 = table->ColAndColGroupAtEffectiveColumn(1);
+  EXPECT_EQ(nullptr, c1.colgroup);
+  EXPECT_EQ(nullptr, c1.col);
+  EXPECT_EQ(nullptr, c1.InnermostColOrColGroup());
+  EXPECT_FALSE(c1.adjoins_start_border_of_col_group);
+  EXPECT_FALSE(c1.adjoins_end_border_of_col_group);
+}
+
+}  // anonymous namespace
+
+}  // namespace blink