fields();
$this->assertCount(2, $fields, 'level is intentionally not exposed (SEO/a11y)');
$this->assertSame('content', $fields[0]['key']);
$this->assertSame('align', $fields[1]['key']);
}
public function test_apply_content_preserves_existing_heading_level()
{
$block = $this->headingBlock('old
', ['level' => 3]);
$result = (new Heading())->apply($block, 'content', 'new');
$this->assertSame('new
', $result['innerHTML']);
}
public function test_apply_content_synthesizes_h_tag_from_attrs_level_when_no_existing_tag()
{
$block = $this->headingBlock('', ['level' => 4]);
$result = (new Heading())->apply($block, 'content', 'hi');
$this->assertSame('hi
', $result['innerHTML']);
}
public function test_apply_content_clamps_synthesized_level_to_1_6()
{
$block = $this->headingBlock('', ['level' => 99]);
$this->assertSame('x
', (new Heading())->apply($block, 'content', 'x')['innerHTML']);
$block = $this->headingBlock('', ['level' => 0]);
$this->assertSame('y
', (new Heading())->apply($block, 'content', 'y')['innerHTML']);
$block = $this->headingBlock('', []);
$this->assertSame('z
', (new Heading())->apply($block, 'content', 'z')['innerHTML'], 'defaults to h2');
}
public function test_apply_content_treats_regex_backreferences_in_user_text_as_literal()
{
$inputs = ['Try $1 for size', 'Use \\1 here', '$0 free', 'Mixed $1 and \\2'];
foreach ($inputs as $input) {
$block = $this->headingBlock('old
', ['level' => 2]);
$result = (new Heading())->apply($block, 'content', $input);
$this->assertSame('' . $input . '
', $result['innerHTML'], "input: {$input}");
}
}
public function test_apply_content_runs_through_wp_kses_post()
{
$block = $this->headingBlock('old
', ['level' => 2]);
$result = (new Heading())->apply($block, 'content', 'hi');
$this->assertStringContainsString('hi', $result['innerHTML']);
$this->assertStringNotContainsString('headingBlock('x
');
$result = (new Heading())->apply($block, 'align', 'center');
$this->assertSame('center', $result['attrs']['textAlign']);
$this->assertArrayNotHasKey('align', $result['attrs']);
$this->assertStringContainsString('has-text-align-center', $result['innerHTML']);
}
public function test_apply_align_with_invalid_value_clears_textAlign()
{
$block = $this->headingBlock('x
', ['textAlign' => 'left']);
$result = (new Heading())->apply($block, 'align', 'diagonal');
$this->assertArrayNotHasKey('textAlign', $result['attrs']);
$this->assertStringNotContainsString('has-text-align-', $result['innerHTML']);
}
public function test_apply_with_unknown_field_returns_block_unchanged()
{
$block = $this->headingBlock('x
');
$this->assertSame($block, (new Heading())->apply($block, 'level', 4));
}
private function headingBlock(string $innerHTML, array $attrs = []): array
{
return [
'blockName' => 'core/heading',
'attrs' => $attrs,
'innerBlocks' => [],
'innerHTML' => $innerHTML,
'innerContent' => [$innerHTML],
];
}
}