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Merge pull request #292 from rtCamp/test/refactor-ContentBlockResolver
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tests: backfill tests for `ContentBlockResolver`
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@jasonbahl
jasonbahl authored Oct 5, 2024
2 parents 76f85a6 + a38e479 commit 652a186
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5 changes: 5 additions & 0 deletions .changeset/weak-days-suffer.md
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---
"@wpengine/wp-graphql-content-blocks": patch
---

tests : backfill tests for ContentBlockResolver
210 changes: 210 additions & 0 deletions tests/unit/ContentBlocksResolverTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -139,4 +139,214 @@ static function ( $parsed_block ) {
$this->assertEquals( 4, count( $parsed_blocks ) );
$this->assertEquals( $allowed, $actual_block_names );
}

/**
* Test the wpgraphql_content_blocks_pre_resolve_blocks filter.
*/
public function test_pre_resolved_blocks_filter_returns_non_null() {
add_filter(
'wpgraphql_content_blocks_pre_resolve_blocks',
static function () {
return [
[
'blockName' => 'core/paragraph',
'attrs' => [ 'content' => 'Test content' ],
],
];
},
10,
);

$post = new Post( get_post( $this->post_id ) );

$resolved_blocks = $this->instance->resolve_content_blocks( $post, [] );
// The filter should return a block.
$this->assertCount( 1, $resolved_blocks );
$this->assertEquals( 'core/paragraph', $resolved_blocks[0]['blockName'] );
$this->assertEquals( 'Test content', $resolved_blocks[0]['attrs']['content'] );

// Cleanup.
remove_all_filters( 'wpgraphql_content_blocks_pre_resolve_blocks' );
}

/**
* Tests that an empty array is returned when the post content is empty.
*/
public function test_returns_empty_array_for_empty_content() {
$post_id = self::factory()->post->create( [ 'post_content' => '' ] );
$post = new Post( get_post( $post_id ) );

$resolved_blocks = $this->instance->resolve_content_blocks( $post, [] );

// The block should be resolved from the post node.
$this->assertIsArray( $resolved_blocks );
$this->assertEmpty( $resolved_blocks );

// Cleanup.
wp_delete_post( $post_id, true );
}

/**
* Tests that the wpgraphql_content_blocks_resolve_blocks filter is applied.
*/
public function test_filters_wpgraphql_content_blocks_resolve_blocks() {
add_filter(
'wpgraphql_content_blocks_resolve_blocks',
static function ( $blocks, $node, $args, $allowed_block_names ) {
return [ [ 'blockName' => 'core/test-filter' ] ];
},
10,
4
);

$post = new Post( get_post( $this->post_id ) );

$resolved_blocks = $this->instance->resolve_content_blocks( $post, [] );

// The block should be resolved from the post node.
$this->assertCount( 1, $resolved_blocks );
$this->assertEquals( 'core/test-filter', $resolved_blocks[0]['blockName'] );

// Cleanup.
remove_all_filters( 'wpgraphql_content_blocks_resolve_blocks' );
}

/**
* Tests that flat and nested blocks are resolved correctly.
*/
public function test_inner_blocks() {
$post_content = '
<!-- wp:columns -->
<div class="wp-block-columns">
<!-- wp:column -->
<div class="wp-block-column">
<!-- wp:heading -->
<h2>Heading</h2>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p>Paragraph</p>
<!-- /wp:paragraph -->
</div>
<!-- /wp:column -->
<!-- wp:column -->
<div class="wp-block-column">
<!-- wp:heading -->
<h2>Heading</h2>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p>Paragraph</p>
<!-- /wp:paragraph -->
</div>
<!-- /wp:column -->
</div>
<!-- /wp:columns -->';

wp_update_post(
[
'ID' => $this->post_id,
'post_content' => $post_content,
]
);

$post = new Post( get_post( $this->post_id ) );

// Resolve blocks as nested.
$resolved_blocks = $this->instance->resolve_content_blocks( $post, [ 'flat' => false ] );

$this->assertCount( 1, $resolved_blocks, 'There should be only one top-level block (columns).' );
$this->assertEquals( 'core/columns', $resolved_blocks[0]['blockName'] );
$this->assertNotEmpty( $resolved_blocks[0]['clientId'], 'The clientId should be set.' );
$this->assertArrayNotHasKey( 'parentClientId', $resolved_blocks[0], 'The parentClientId should be empty.' );

$this->assertCount( 2, $resolved_blocks[0]['innerBlocks'], 'There should be two inner blocks (columns).' );

// Check the inner blocks.
$expected_parent_client_id = $resolved_blocks[0]['clientId'];

foreach ( $resolved_blocks[0]['innerBlocks'] as $inner_block ) {
$this->assertEquals( 'core/column', $inner_block['blockName'] );
$this->assertCount( 2, $inner_block['innerBlocks'], 'There should be two inner blocks (column).' );
$this->assertNotEmpty( $inner_block['clientId'], 'The clientId should be set.' );
$this->assertArrayNotHasKey( 'parentClientId', $resolved_blocks[0], 'The parentClientId should only be set when flattening.' ); // @todo This is incorrect, the parentClientId should be set for nested blocks.

// Check the inner inner blocks.
$expected_parent_client_id = $inner_block['clientId'];

foreach ( $inner_block['innerBlocks'] as $inner_inner_block ) {
$this->assertNotEmpty( $inner_inner_block['clientId'], 'The clientId should be set.' );
$this->assertArrayNotHasKey( 'parentClientId', $resolved_blocks[0], 'The parentClientId should only be set when flattening.' ); // @todo This is incorrect, the parentClientId should be set for nested blocks.
}
}

// Resolve blocks as flat.
$expected_parent_client_id = null;
$expected_blocks = $resolved_blocks;

$resolved_blocks = $this->instance->resolve_content_blocks( $post, [ 'flat' => true ] );

$this->assertCount( 7, $resolved_blocks, 'There should be five blocks when flattened.' );

// Check the top-level block (columns).
$this->assertNotEmpty( $resolved_blocks[0]['clientId'], 'The clientId should be set.' );
$this->assertEqualBlocks( $expected_blocks[0], $resolved_blocks[0], 'The top-level block should match.' );

// Check first inner block (column).
$expected_parent_client_id = $resolved_blocks[0]['clientId'];
$this->assertNotEmpty( $resolved_blocks[1]['clientId'], 'The clientId should be set.' );
$this->assertEquals( $expected_parent_client_id, $resolved_blocks[1]['parentClientId'], 'The parentClientId should match.' );
$this->assertEqualBlocks( $expected_blocks[0]['innerBlocks'][0], $resolved_blocks[1], 'The first inner block should match.' );

// Check first inner block children.
$expected_parent_client_id = $resolved_blocks[1]['clientId'];
$this->assertNotEmpty( $resolved_blocks[2]['clientId'], 'The clientId should be set.' );
$this->assertEquals( $expected_parent_client_id, $resolved_blocks[2]['parentClientId'], 'The parentClientId should match.' );
$this->assertEqualBlocks( $expected_blocks[0]['innerBlocks'][0]['innerBlocks'][0], $resolved_blocks[2], 'The first inner inner block should match.' );

$this->assertNotEmpty( $resolved_blocks[3]['clientId'], 'The clientId should be set.' );
$this->assertEquals( $expected_parent_client_id, $resolved_blocks[3]['parentClientId'], 'The parentClientId should match.' );
$this->assertEqualBlocks( $expected_blocks[0]['innerBlocks'][0]['innerBlocks'][1], $resolved_blocks[3], 'The second inner inner block should match.' );

// Check second inner block (column).
$expected_parent_client_id = $resolved_blocks[0]['clientId'];
$this->assertNotEmpty( $resolved_blocks[4]['clientId'], 'The clientId should be set.' );
$this->assertEquals( $expected_parent_client_id, $resolved_blocks[4]['parentClientId'], 'The parentClientId should match.' );
$this->assertEqualBlocks( $expected_blocks[0]['innerBlocks'][1], $resolved_blocks[4], 'The first inner block should match.' );

// Check second inner block children.
$expected_parent_client_id = $resolved_blocks[4]['clientId'];
$this->assertNotEmpty( $resolved_blocks[5]['clientId'], 'The clientId should be set.' );
$this->assertEquals( $expected_parent_client_id, $resolved_blocks[5]['parentClientId'], 'The parentClientId should match.' );
$this->assertEqualBlocks( $expected_blocks[0]['innerBlocks'][1]['innerBlocks'][0], $resolved_blocks[5], 'The first inner inner block should match.' );

$this->assertNotEmpty( $resolved_blocks[6]['clientId'], 'The clientId should be set.' );
$this->assertEquals( $expected_parent_client_id, $resolved_blocks[6]['parentClientId'], 'The parentClientId should match.' );
$this->assertEqualBlocks( $expected_blocks[0]['innerBlocks'][1]['innerBlocks'][1], $resolved_blocks[6], 'The second inner inner block should match.' );
}

/**
* Asserts two blocks are equal, ignoring clientId and parentClientId.
*
* @param array<string,mixed> $expected The expected block.
* @param array<string,mixed> $actual The actual block.
* @param string $message The message to display if the assertion fails.
*/
protected function assertEqualBlocks( $expected, $actual, $message = '' ) {
// Remove clientId and parentClientId from comparison.
unset( $expected['clientId'] );
unset( $expected['parentClientId'] );
unset( $actual['clientId'] );
unset( $actual['parentClientId'] );

$expected_inner_blocks = $expected['innerBlocks'] ?? [];
$actual_inner_blocks = $actual['innerBlocks'] ?? [];

unset( $expected['innerBlocks'] );
unset( $actual['innerBlocks'] );

$this->assertEquals( $expected, $actual, $message );

foreach ( $expected_inner_blocks as $index => $expected_inner_block ) {
$this->assertEqualBlocks( $expected_inner_block, $actual_inner_blocks[ $index ], $message );
}
}
}

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