flutter_flutter/packages/flutter/test/rendering/table_test.dart

// Copyright 2015 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.

import 'package:flutter/rendering.dart';
import 'package:flutter_test/flutter_test.dart';

import 'rendering_tester.dart';

RenderBox sizedBox(double width, double height) {
  return new RenderConstrainedBox(
    additionalConstraints: new BoxConstraints.tight(new Size(width, height))
  );
}

void main() {
  test('Table control test; tight', () {
    RenderTable table;
    layout(table = new RenderTable());

    expect(table.size.width, equals(800.0));
    expect(table.size.height, equals(600.0));

    expect(table, hasAGoodToStringDeep);
    expect(
      table.toStringDeep(),
      equalsIgnoringHashCodes(
        'RenderTable#00000 NEEDS-PAINT\n'
        ' │ parentData: <none>\n'
        ' │ constraints: BoxConstraints(w=800.0, h=600.0)\n'
        ' │ size: Size(800.0, 600.0)\n'
        ' │ default column width: FlexColumnWidth(1.0)\n'
        ' │ table size: 0×0\n'
        ' │ column offsets: unknown\n'
        ' │ row offsets: []\n'
        ' │\n'
        ' └─table is empty\n',
      ),
    );
  });

  test('Table control test; loose', () {
    RenderTable table;
    layout(new RenderPositionedBox(child: table = new RenderTable()));

    expect(table.size, equals(const Size(0.0, 0.0)));
  });

  test('Table test: combinations', () {
    RenderTable table;
    layout(new RenderPositionedBox(child: table = new RenderTable(
      columns: 5,
      rows: 5,
      defaultColumnWidth: const IntrinsicColumnWidth(),
      defaultVerticalAlignment: TableCellVerticalAlignment.baseline,
      textBaseline: TextBaseline.alphabetic
    )));

    expect(table.size, equals(const Size(0.0, 0.0)));

    table.setChild(2, 4, sizedBox(100.0, 200.0));

    pumpFrame();

    expect(table.size, equals(const Size(100.0, 200.0)));

    table.setChild(0, 0, sizedBox(10.0, 30.0));
    table.setChild(1, 0, sizedBox(20.0, 20.0));
    table.setChild(2, 0, sizedBox(30.0, 10.0));

    pumpFrame();

    expect(table.size, equals(const Size(130.0, 230.0)));

    expect(table, hasAGoodToStringDeep);
    expect(
      table.toStringDeep(),
      equalsIgnoringHashCodes(
        'RenderTable#00000 relayoutBoundary=up1 NEEDS-PAINT\n'
        ' │ parentData: offset=Offset(335.0, 185.0) (can use size)\n'
        ' │ constraints: BoxConstraints(0.0<=w<=800.0, 0.0<=h<=600.0)\n'
        ' │ size: Size(130.0, 230.0)\n'
        ' │ default column width: IntrinsicColumnWidth\n'
        ' │ table size: 5×5\n'
        ' │ column offsets: [0.0, 10.0, 30.0, 130.0, 130.0]\n'
        ' │ row offsets: [0.0, 30.0, 30.0, 30.0, 30.0, 230.0]\n'
        ' │\n'
        ' ├─child (0, 0): RenderConstrainedBox#00000 relayoutBoundary=up2 NEEDS-PAINT\n'
        ' │   parentData: offset=Offset(0.0, 0.0); default vertical alignment\n'
        ' │     (can use size)\n'
        ' │   constraints: BoxConstraints(w=10.0, 0.0<=h<=Infinity)\n'
        ' │   size: Size(10.0, 30.0)\n'
        ' │   additionalConstraints: BoxConstraints(w=10.0, h=30.0)\n'
        ' │\n'
        ' ├─child (1, 0): RenderConstrainedBox#00000 relayoutBoundary=up2 NEEDS-PAINT\n'
        ' │   parentData: offset=Offset(10.0, 0.0); default vertical alignment\n'
        ' │     (can use size)\n'
        ' │   constraints: BoxConstraints(w=20.0, 0.0<=h<=Infinity)\n'
        ' │   size: Size(20.0, 20.0)\n'
        ' │   additionalConstraints: BoxConstraints(w=20.0, h=20.0)\n'
        ' │\n'
        ' ├─child (2, 0): RenderConstrainedBox#00000 relayoutBoundary=up2 NEEDS-PAINT\n'
        ' │   parentData: offset=Offset(30.0, 0.0); default vertical alignment\n'
        ' │     (can use size)\n'
        ' │   constraints: BoxConstraints(w=100.0, 0.0<=h<=Infinity)\n'
        ' │   size: Size(100.0, 10.0)\n'
        ' │   additionalConstraints: BoxConstraints(w=30.0, h=10.0)\n'
        ' │\n'
        ' ├─child (3, 0) is null\n'
        ' ├─child (4, 0) is null\n'
        ' ├─child (0, 1) is null\n'
        ' ├─child (1, 1) is null\n'
        ' ├─child (2, 1) is null\n'
        ' ├─child (3, 1) is null\n'
        ' ├─child (4, 1) is null\n'
        ' ├─child (0, 2) is null\n'
        ' ├─child (1, 2) is null\n'
        ' ├─child (2, 2) is null\n'
        ' ├─child (3, 2) is null\n'
        ' ├─child (4, 2) is null\n'
        ' ├─child (0, 3) is null\n'
        ' ├─child (1, 3) is null\n'
        ' ├─child (2, 3) is null\n'
        ' ├─child (3, 3) is null\n'
        ' ├─child (4, 3) is null\n'
        ' ├─child (0, 4) is null\n'
        ' ├─child (1, 4) is null\n'
        ' ├─child (2, 4): RenderConstrainedBox#00000 relayoutBoundary=up2 NEEDS-PAINT\n'
        ' │   parentData: offset=Offset(30.0, 30.0); default vertical alignment\n'
        ' │     (can use size)\n'
        ' │   constraints: BoxConstraints(w=100.0, 0.0<=h<=Infinity)\n'
        ' │   size: Size(100.0, 200.0)\n'
        ' │   additionalConstraints: BoxConstraints(w=100.0, h=200.0)\n'
        ' │\n'
        ' ├─child (3, 4) is null\n'
        ' └─child (4, 4) is null\n',
      ),
    );
  });

  test('Table test: removing cells', () {
    RenderTable table;
    RenderBox child;
    table = new RenderTable(
      columns: 5,
      rows: 5
    );
    table.setChild(4, 4, child = sizedBox(10.0, 10.0));

    layout(table);

    expect(child.attached, isTrue);
    table.rows = 4;
    expect(child.attached, isFalse);
  });

  test('Table test: replacing cells', () {
    RenderTable table;
    final RenderBox child1 = new RenderPositionedBox();
    final RenderBox child2 = new RenderPositionedBox();
    final RenderBox child3 = new RenderPositionedBox();
    table = new RenderTable();
    table.setFlatChildren(3, <RenderBox>[child1, new RenderPositionedBox(), child2,
                                         new RenderPositionedBox(), child3, new RenderPositionedBox()]);
    expect(table.rows, equals(2));
    layout(table);
    table.setFlatChildren(3, <RenderBox>[new RenderPositionedBox(), child1, new RenderPositionedBox(),
                                         child2, new RenderPositionedBox(), child3]);
    pumpFrame();
    table.setFlatChildren(3, <RenderBox>[new RenderPositionedBox(), child1, new RenderPositionedBox(),
                                         child2, new RenderPositionedBox(), child3]);
    pumpFrame();
    expect(table.columns, equals(3));
    expect(table.rows, equals(2));
  });
}