Fix DataCell overflows when cell height is large by adding dataRowMinHeight,...

Fix DataCell overflows when cell height is large by adding dataRowMinHeight, dataRowMaxHeight props. (#114338)

* Fix DataCell overflows when cell height is large by adding dataRowMinHeight, dataRowMaxHeight props.

* Fix DataCell overflows when cell height is large by adding dataRowMinHeight, dataRowMaxHeight props - add tests.

* Fix analysis errors

* Review changes.

* Add asserts for dataRowMinHeight and dataRowMaxHeight

* Add asserts for dataRowMinHeight and dataRowMaxHeight

* Make dataRowHeight a computed getter

* Remove get only dataRowHeight from hashCode...

* Update deprecated after

* Add new line at end of AUTHORS

* Apply suggestions from code review

* Update packages/flutter/test/material/data_table_test.dart

---------
Co-authored-by: Kate Lovett <katelovett@google.com>

AUTHORS

@@ -101,5 +101,6 @@ Junhua Lin <1075209054@qq.com>
 Tomasz Gucio <tgucio@gmail.com>
 Jason C.H <ctrysbita@outlook.com>
 Hubert Jóźwiak <hjozwiakdx@gmail.com>
+David Neuy <quantjump@gmail.com>
 Eli Albert <crasowas@gmail.com>
 Jan Kuß <jan@kuss.dev>

packages/flutter/lib/src/material/data_table.dart

@@ -392,7 +392,13 @@ class DataTable extends StatelessWidget {
     this.onSelectAll,
     this.decoration,
     this.dataRowColor,
-    this.dataRowHeight,
+    @Deprecated(
+      'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
+      'This feature was deprecated after v3.7.0-5.0.pre.',
+    )
+    double? dataRowHeight,
+    double? dataRowMinHeight,
+    double? dataRowMaxHeight,
     this.dataTextStyle,
     this.headingRowColor,
     this.headingRowHeight,
@@ -410,6 +416,11 @@ class DataTable extends StatelessWidget {
        assert(sortColumnIndex == null || (sortColumnIndex >= 0 && sortColumnIndex < columns.length)),
        assert(!rows.any((DataRow row) => row.cells.length != columns.length)),
        assert(dividerThickness == null || dividerThickness >= 0),
+       assert(dataRowMinHeight == null || dataRowMaxHeight == null || dataRowMaxHeight >= dataRowMinHeight),
+       assert(dataRowHeight == null || (dataRowMinHeight == null && dataRowMaxHeight == null),
+         'dataRowHeight ($dataRowHeight) must not be set if dataRowMinHeight ($dataRowMinHeight) or dataRowMaxHeight ($dataRowMaxHeight) are set.'),
+       dataRowMinHeight = dataRowHeight ?? dataRowMinHeight,
+       dataRowMaxHeight = dataRowHeight ?? dataRowMaxHeight,
        _onlyTextColumn = _initOnlyTextColumn(columns);
 
   /// The configuration and labels for the columns in the table.
@@ -504,7 +515,29 @@ class DataTable extends StatelessWidget {
   /// If null, [DataTableThemeData.dataRowHeight] is used. This value defaults
   /// to [kMinInteractiveDimension] to adhere to the Material Design
   /// specifications.
-  final double? dataRowHeight;
+  @Deprecated(
+    'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
+    'This feature was deprecated after v3.7.0-5.0.pre.',
+  )
+  double? get dataRowHeight => dataRowMinHeight == dataRowMaxHeight ? dataRowMinHeight : null;
+
+  /// {@template flutter.material.dataTable.dataRowMinHeight}
+  /// The minimum height of each row (excluding the row that contains column headings).
+  /// {@endtemplate}
+  ///
+  /// If null, [DataTableThemeData.dataRowMinHeight] is used. This value defaults
+  /// to [kMinInteractiveDimension] to adhere to the Material Design
+  /// specifications.
+  final double? dataRowMinHeight;
+
+  /// {@template flutter.material.dataTable.dataRowMaxHeight}
+  /// The maximum height of each row (excluding the row that contains column headings).
+  /// {@endtemplate}
+  ///
+  /// If null, [DataTableThemeData.dataRowMaxHeight] is used. This value defaults
+  /// to [kMinInteractiveDimension] to adhere to the Material Design
+  /// specifications.
+  final double? dataRowMaxHeight;
 
   /// {@template flutter.material.dataTable.dataTextStyle}
   /// The text style for data rows.
@@ -841,13 +874,17 @@ class DataTable extends StatelessWidget {
       ?? dataTableTheme.dataTextStyle
       ?? themeData.dataTableTheme.dataTextStyle
       ?? themeData.textTheme.bodyMedium!;
-    final double effectiveDataRowHeight = dataRowHeight
-      ?? dataTableTheme.dataRowHeight
-      ?? themeData.dataTableTheme.dataRowHeight
+    final double effectiveDataRowMinHeight = dataRowMinHeight
+      ?? dataTableTheme.dataRowMinHeight
+      ?? themeData.dataTableTheme.dataRowMinHeight
+      ?? kMinInteractiveDimension;
+    final double effectiveDataRowMaxHeight = dataRowMaxHeight
+      ?? dataTableTheme.dataRowMaxHeight
+      ?? themeData.dataTableTheme.dataRowMaxHeight
       ?? kMinInteractiveDimension;
     label = Container(
       padding: padding,
-      height: effectiveDataRowHeight,
+      constraints: BoxConstraints(minHeight: effectiveDataRowMinHeight, maxHeight: effectiveDataRowMaxHeight),
       alignment: numeric ? Alignment.centerRight : AlignmentDirectional.centerStart,
       child: DefaultTextStyle(
         style: effectiveDataTextStyle.copyWith(
@@ -1063,6 +1100,7 @@ class DataTable extends StatelessWidget {
         clipBehavior: clipBehavior,
         child: Table(
           columnWidths: tableColumns.asMap(),
+          defaultVerticalAlignment: TableCellVerticalAlignment.middle,
           children: tableRows,
           border: border,
         ),

packages/flutter/lib/src/material/data_table_theme.dart

@@ -40,7 +40,13 @@ class DataTableThemeData with Diagnosticable {
   const DataTableThemeData({
     this.decoration,
     this.dataRowColor,
-    this.dataRowHeight,
+    @Deprecated(
+      'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
+      'This feature was deprecated after v3.7.0-5.0.pre.',
+    )
+    double? dataRowHeight,
+    double? dataRowMinHeight,
+    double? dataRowMaxHeight,
     this.dataTextStyle,
     this.headingRowColor,
     this.headingRowHeight,
@@ -49,7 +55,11 @@ class DataTableThemeData with Diagnosticable {
     this.columnSpacing,
     this.dividerThickness,
     this.checkboxHorizontalMargin,
-  });
+  }) : assert(dataRowMinHeight == null || dataRowMaxHeight == null || dataRowMaxHeight >= dataRowMinHeight),
+       assert(dataRowHeight == null || (dataRowMinHeight == null && dataRowMaxHeight == null),
+         'dataRowHeight ($dataRowHeight) must not be set if dataRowMinHeight ($dataRowMinHeight) or dataRowMaxHeight ($dataRowMaxHeight) are set.'),
+       dataRowMinHeight = dataRowHeight ?? dataRowMinHeight,
+       dataRowMaxHeight = dataRowHeight ?? dataRowMaxHeight;
 
   /// {@macro flutter.material.dataTable.decoration}
   final Decoration? decoration;
@@ -59,7 +69,17 @@ class DataTableThemeData with Diagnosticable {
   final MaterialStateProperty<Color?>? dataRowColor;
 
   /// {@macro flutter.material.dataTable.dataRowHeight}
-  final double? dataRowHeight;
+  @Deprecated(
+    'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
+    'This feature was deprecated after v3.7.0-5.0.pre.',
+  )
+  double? get dataRowHeight => dataRowMinHeight == dataRowMaxHeight ? dataRowMinHeight : null;
+
+  /// {@macro flutter.material.dataTable.dataRowMinHeight}
+  final double? dataRowMinHeight;
+
+  /// {@macro flutter.material.dataTable.dataRowMaxHeight}
+  final double? dataRowMaxHeight;
 
   /// {@macro flutter.material.dataTable.dataTextStyle}
   final TextStyle? dataTextStyle;
@@ -91,7 +111,13 @@ class DataTableThemeData with Diagnosticable {
   DataTableThemeData copyWith({
     Decoration? decoration,
     MaterialStateProperty<Color?>? dataRowColor,
+    @Deprecated(
+      'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
+      'This feature was deprecated after v3.7.0-5.0.pre.',
+    )
     double? dataRowHeight,
+    double? dataRowMinHeight,
+    double? dataRowMaxHeight,
     TextStyle? dataTextStyle,
     MaterialStateProperty<Color?>? headingRowColor,
     double? headingRowHeight,
@@ -105,6 +131,8 @@ class DataTableThemeData with Diagnosticable {
       decoration: decoration ?? this.decoration,
       dataRowColor: dataRowColor ?? this.dataRowColor,
       dataRowHeight: dataRowHeight ?? this.dataRowHeight,
+      dataRowMinHeight: dataRowMinHeight ?? this.dataRowMinHeight,
+      dataRowMaxHeight: dataRowMaxHeight ?? this.dataRowMaxHeight,
       dataTextStyle: dataTextStyle ?? this.dataTextStyle,
       headingRowColor: headingRowColor ?? this.headingRowColor,
       headingRowHeight: headingRowHeight ?? this.headingRowHeight,
@@ -128,7 +156,8 @@ class DataTableThemeData with Diagnosticable {
     return DataTableThemeData(
       decoration: Decoration.lerp(a.decoration, b.decoration, t),
       dataRowColor: MaterialStateProperty.lerp<Color?>(a.dataRowColor, b.dataRowColor, t, Color.lerp),
-      dataRowHeight: lerpDouble(a.dataRowHeight, b.dataRowHeight, t),
+      dataRowMinHeight: lerpDouble(a.dataRowMinHeight, b.dataRowMinHeight, t),
+      dataRowMaxHeight: lerpDouble(a.dataRowMaxHeight, b.dataRowMaxHeight, t),
       dataTextStyle: TextStyle.lerp(a.dataTextStyle, b.dataTextStyle, t),
       headingRowColor: MaterialStateProperty.lerp<Color?>(a.headingRowColor, b.headingRowColor, t, Color.lerp),
       headingRowHeight: lerpDouble(a.headingRowHeight, b.headingRowHeight, t),
@@ -144,7 +173,8 @@ class DataTableThemeData with Diagnosticable {
   int get hashCode => Object.hash(
     decoration,
     dataRowColor,
-    dataRowHeight,
+    dataRowMinHeight,
+    dataRowMaxHeight,
     dataTextStyle,
     headingRowColor,
     headingRowHeight,
@@ -166,7 +196,8 @@ class DataTableThemeData with Diagnosticable {
     return other is DataTableThemeData
       && other.decoration == decoration
       && other.dataRowColor == dataRowColor
-      && other.dataRowHeight == dataRowHeight
+      && other.dataRowMinHeight == dataRowMinHeight
+      && other.dataRowMaxHeight == dataRowMaxHeight
       && other.dataTextStyle == dataTextStyle
       && other.headingRowColor == headingRowColor
       && other.headingRowHeight == headingRowHeight
@@ -182,7 +213,8 @@ class DataTableThemeData with Diagnosticable {
     super.debugFillProperties(properties);
     properties.add(DiagnosticsProperty<Decoration>('decoration', decoration, defaultValue: null));
     properties.add(DiagnosticsProperty<MaterialStateProperty<Color?>>('dataRowColor', dataRowColor, defaultValue: null));
-    properties.add(DoubleProperty('dataRowHeight', dataRowHeight, defaultValue: null));
+    properties.add(DoubleProperty('dataRowMinHeight', dataRowMinHeight, defaultValue: null));
+    properties.add(DoubleProperty('dataRowMaxHeight', dataRowMaxHeight, defaultValue: null));
     properties.add(DiagnosticsProperty<TextStyle>('dataTextStyle', dataTextStyle, defaultValue: null));
     properties.add(DiagnosticsProperty<MaterialStateProperty<Color?>>('headingRowColor', headingRowColor, defaultValue: null));
     properties.add(DoubleProperty('headingRowHeight', headingRowHeight, defaultValue: null));

packages/flutter/lib/src/material/paginated_data_table.dart

@@ -71,7 +71,13 @@ class PaginatedDataTable extends StatefulWidget {
     this.sortColumnIndex,
     this.sortAscending = true,
     this.onSelectAll,
-    this.dataRowHeight = kMinInteractiveDimension,
+    @Deprecated(
+      'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
+      'This feature was deprecated after v3.7.0-5.0.pre.',
+    )
+    double? dataRowHeight,
+    double? dataRowMinHeight,
+    double? dataRowMaxHeight,
     this.headingRowHeight = 56.0,
     this.horizontalMargin = 24.0,
     this.columnSpacing = 56.0,
@@ -91,6 +97,11 @@ class PaginatedDataTable extends StatefulWidget {
   }) : assert(actions == null || (header != null)),
        assert(columns.isNotEmpty),
        assert(sortColumnIndex == null || (sortColumnIndex >= 0 && sortColumnIndex < columns.length)),
+       assert(dataRowMinHeight == null || dataRowMaxHeight == null || dataRowMaxHeight >= dataRowMinHeight),
+       assert(dataRowHeight == null || (dataRowMinHeight == null && dataRowMaxHeight == null),
+         'dataRowHeight ($dataRowHeight) must not be set if dataRowMinHeight ($dataRowMinHeight) or dataRowMaxHeight ($dataRowMaxHeight) are set.'),
+       dataRowMinHeight = dataRowHeight ?? dataRowMinHeight ?? kMinInteractiveDimension,
+       dataRowMaxHeight = dataRowHeight ?? dataRowMaxHeight ?? kMinInteractiveDimension,
        assert(rowsPerPage > 0),
        assert(() {
          if (onRowsPerPageChanged != null) {
@@ -147,7 +158,23 @@ class PaginatedDataTable extends StatefulWidget {
   ///
   /// This value is optional and defaults to kMinInteractiveDimension if not
   /// specified.
-  final double dataRowHeight;
+  @Deprecated(
+    'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
+    'This feature was deprecated after v3.7.0-5.0.pre.',
+  )
+  double? get dataRowHeight => dataRowMinHeight == dataRowMaxHeight ? dataRowMinHeight : null;
+
+  /// The minimum height of each row (excluding the row that contains column headings).
+  ///
+  /// This value is optional and defaults to [kMinInteractiveDimension] if not
+  /// specified.
+  final double dataRowMinHeight;
+
+  /// The maximum height of each row (excluding the row that contains column headings).
+  ///
+  /// This value is optional and defaults to kMinInteractiveDimension if not
+  /// specified.
+  final double dataRowMaxHeight;
 
   /// The height of the heading row.
   ///
@@ -518,7 +545,8 @@ class PaginatedDataTableState extends State<PaginatedDataTable> {
                     // Make sure no decoration is set on the DataTable
                     // from the theme, as its already wrapped in a Card.
                     decoration: const BoxDecoration(),
-                    dataRowHeight: widget.dataRowHeight,
+                    dataRowMinHeight: widget.dataRowMinHeight,
+                    dataRowMaxHeight: widget.dataRowMaxHeight,
                     headingRowHeight: widget.headingRowHeight,
                     horizontalMargin: widget.horizontalMargin,
                     checkboxHorizontalMargin: widget.checkboxHorizontalMargin,

packages/flutter/test/material/data_table_test.dart

@@ -629,14 +629,16 @@ void main() {
     Widget buildCustomTable({
       int? sortColumnIndex,
       bool sortAscending = true,
-      double dataRowHeight = 48.0,
+      double? dataRowMinHeight,
+      double? dataRowMaxHeight,
       double headingRowHeight = 56.0,
     }) {
       return DataTable(
         sortColumnIndex: sortColumnIndex,
         sortAscending: sortAscending,
         onSelectAll: (bool? value) {},
-        dataRowHeight: dataRowHeight,
+        dataRowMinHeight: dataRowMinHeight,
+        dataRowMaxHeight: dataRowMaxHeight,
         headingRowHeight: headingRowHeight,
         columns: <DataColumn>[
           const DataColumn(
@@ -712,7 +714,7 @@ void main() {
     Finder findFirstContainerFor(String text) => find.widgetWithText(Container, text).first;
 
     expect(tester.getSize(findFirstContainerFor('Name')).height, 56.0);
-    expect(tester.getSize(findFirstContainerFor('Frozen yogurt')).height, 48.0);
+    expect(tester.getSize(findFirstContainerFor('Frozen yogurt')).height, kMinInteractiveDimension);
 
     // CUSTOM VALUES
     await tester.pumpWidget(MaterialApp(
@@ -726,14 +728,105 @@ void main() {
     expect(tester.getSize(findFirstContainerFor('Name')).height, 64.0);
 
     await tester.pumpWidget(MaterialApp(
-      home: Material(child: buildCustomTable(dataRowHeight: 30.0)),
+      home: Material(child: buildCustomTable(dataRowMinHeight: 30.0, dataRowMaxHeight: 30.0)),
     ));
     expect(tester.getSize(findFirstContainerFor('Frozen yogurt')).height, 30.0);
 
     await tester.pumpWidget(MaterialApp(
-      home: Material(child: buildCustomTable(dataRowHeight: 56.0)),
+      home: Material(child: buildCustomTable(dataRowMinHeight: 0.0, dataRowMaxHeight: double.infinity)),
+    ));
+    expect(tester.getSize(findFirstContainerFor('Frozen yogurt')).height, greaterThan(0.0));
+  });
+
+  testWidgets('DataTable custom row height one row taller than others', (WidgetTester tester) async {
+    const String multilineText = 'Line one.\nLine two.\nLine three.\nLine four.';
+
+    Widget buildCustomTable({
+      double? dataRowMinHeight,
+      double? dataRowMaxHeight,
+    }) {
+      return DataTable(
+        dataRowMinHeight: dataRowMinHeight,
+        dataRowMaxHeight: dataRowMaxHeight,
+        columns: const <DataColumn>[
+          DataColumn(
+            label: Text('SingleRowColumn'),
+          ),
+          DataColumn(
+            label: Text('MultiRowColumn'),
+          ),
+        ],
+        rows: const <DataRow>[
+          DataRow(cells: <DataCell>[
+            DataCell(Text('Data')),
+            DataCell(Column(children: <Widget>[
+                  Text(multilineText),
+                ])),
+          ]),
+        ],
+      );
+    }
+
+    Finder findFirstContainerFor(String text) => find.widgetWithText(Container, text).first;
+
+    await tester.pumpWidget(MaterialApp(
+      home: Material(child: buildCustomTable(dataRowMinHeight: 0.0, dataRowMaxHeight: double.infinity)),
     ));
-    expect(tester.getSize(findFirstContainerFor('Frozen yogurt')).height, 56.0);
+
+    final double singleLineRowHeight = tester.getSize(findFirstContainerFor('Data')).height;
+    final double multilineRowHeight = tester.getSize(findFirstContainerFor(multilineText)).height;
+
+    expect(multilineRowHeight, greaterThan(singleLineRowHeight));
+  });
+
+  testWidgets('DataTable custom row height - separate test for deprecated dataRowHeight', (WidgetTester tester) async {
+    Widget buildCustomTable({
+      double dataRowHeight = 48.0,
+    }) {
+      return DataTable(
+        onSelectAll: (bool? value) {},
+        dataRowHeight: dataRowHeight,
+        columns: <DataColumn>[
+          const DataColumn(
+            label: Text('Name'),
+            tooltip: 'Name',
+          ),
+          DataColumn(
+            label: const Text('Calories'),
+            tooltip: 'Calories',
+            numeric: true,
+            onSort: (int columnIndex, bool ascending) {},
+          ),
+        ],
+        rows: kDesserts.map<DataRow>((Dessert dessert) {
+          return DataRow(
+            key: ValueKey<String>(dessert.name),
+            onSelectChanged: (bool? selected) {},
+            cells: <DataCell>[
+              DataCell(
+                Text(dessert.name),
+              ),
+              DataCell(
+                Text('${dessert.calories}'),
+                showEditIcon: true,
+                onTap: () {},
+              ),
+            ],
+          );
+        }).toList(),
+      );
+    }
+
+    // The finder matches with the Container of the cell content, as well as the
+    // Container wrapping the whole table. The first one is used to test row
+    // heights.
+    Finder findFirstContainerFor(String text) => find.widgetWithText(Container, text).first;
+
+    // CUSTOM VALUES
+    await tester.pumpWidget(MaterialApp(
+      home: Material(child: buildCustomTable(dataRowHeight: 30.0)),
+    ));
+    expect(tester.getSize(findFirstContainerFor('Frozen yogurt')).height, 30.0);
   });
 
   testWidgets('DataTable custom horizontal padding - checkbox', (WidgetTester tester) async {
@@ -1946,4 +2039,37 @@ void main() {
     expect(material.clipBehavior, Clip.hardEdge);
     expect(material.borderRadius, borderRadius);
   });
+
+  testWidgets('DataTable dataRowMinHeight smaller or equal dataRowMaxHeight validation', (WidgetTester tester) async {
+    DataTable createDataTable() =>
+      DataTable(
+        columns: const <DataColumn>[DataColumn(label: Text('Column1'))],
+        rows: const <DataRow>[],
+        dataRowMinHeight: 2.0,
+        dataRowMaxHeight: 1.0,
+      );
+
+    expect(() => createDataTable(), throwsA(predicate((AssertionError e) =>
+      e.toString().contains('dataRowMaxHeight >= dataRowMinHeight'))));
+  });
+
+  testWidgets('DataTable dataRowHeight is not used together with dataRowMinHeight or dataRowMaxHeight', (WidgetTester tester) async {
+    DataTable createDataTable({double? dataRowHeight, double? dataRowMinHeight, double? dataRowMaxHeight}) =>
+      DataTable(
+        columns: const <DataColumn>[DataColumn(label: Text('Column1'))],
+        rows: const <DataRow>[],
+        dataRowHeight: dataRowHeight,
+        dataRowMinHeight: dataRowMinHeight,
+        dataRowMaxHeight: dataRowMaxHeight,
+      );
+
+    expect(() => createDataTable(dataRowHeight: 1.0, dataRowMinHeight: 2.0, dataRowMaxHeight: 2.0), throwsA(predicate((AssertionError e) =>
+      e.toString().contains('dataRowHeight == null || (dataRowMinHeight == null && dataRowMaxHeight == null)'))));
+
+    expect(() => createDataTable(dataRowHeight: 1.0, dataRowMaxHeight: 2.0), throwsA(predicate((AssertionError e) =>
+      e.toString().contains('dataRowHeight == null || (dataRowMinHeight == null && dataRowMaxHeight == null)'))));
+
+    expect(() => createDataTable(dataRowHeight: 1.0, dataRowMinHeight: 2.0), throwsA(predicate((AssertionError e) =>
+      e.toString().contains('dataRowHeight == null || (dataRowMinHeight == null && dataRowMaxHeight == null)'))));
+  });
 }

packages/flutter/test/material/paginated_data_table_test.dart

@@ -405,7 +405,9 @@ void main() {
     final TestDataSource source = TestDataSource();
 
     Widget buildCustomHeightPaginatedTable({
-      double dataRowHeight = 48.0,
+      double? dataRowHeight,
+      double? dataRowMinHeight,
+      double? dataRowMaxHeight,
       double headingRowHeight = 56.0,
     }) {
       return PaginatedDataTable(
@@ -423,6 +425,8 @@ void main() {
           DataColumn(label: Text('Generation')),
         ],
         dataRowHeight: dataRowHeight,
+        dataRowMinHeight: dataRowMinHeight,
+        dataRowMaxHeight: dataRowMaxHeight,
         headingRowHeight: headingRowHeight,
       );
     }
@@ -480,6 +484,13 @@ void main() {
     expect(tester.renderObject<RenderBox>(
       find.widgetWithText(Container, 'Frozen yogurt (0)').first,
     ).size.height, 56.0);
+
+    await tester.pumpWidget(MaterialApp(
+      home: Material(child: buildCustomHeightPaginatedTable(dataRowMinHeight: 51.0, dataRowMaxHeight: 51.0)),
+    ));
+    expect(tester.renderObject<RenderBox>(
+      find.widgetWithText(Container, 'Frozen yogurt (0)').first,
+    ).size.height, 51.0);
   });
 
   testWidgets('PaginatedDataTable custom horizontal padding - checkbox', (WidgetTester tester) async {