test: add unit tests for PR_Core_Internal_Posts_Provider
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peptiderepo
168
tests/test-internal-posts-provider.php
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168
tests/test-internal-posts-provider.php
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<?php
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declare(strict_types=1);
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/**
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* Unit tests for PR_Core_Internal_Posts_Provider.
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*
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* Tests the provider's taxonomy-based and fallback search behavior,
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* caching, and limit enforcement. Uses mocked WP_Query.
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*/
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class PR_Core_Internal_Posts_Provider_Test {
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/**
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* Test: returns empty array when peptide ID is invalid.
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*/
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public function test_returns_empty_when_peptide_not_found() {
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$provider = new PR_Core_Internal_Posts_Provider();
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$result = $provider->get_posts( 99999, 3 );
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assert( [] === $result, 'Expected empty array for invalid peptide ID' );
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}
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/**
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* Test: returns posts matching peptide_topic taxonomy.
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*/
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public function test_returns_taxonomy_matched_posts() {
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$provider = new PR_Core_Internal_Posts_Provider();
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// Create a peptide post.
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$peptide_id = wp_insert_post( [
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'post_type' => 'peptide',
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'post_title' => 'BPC-157',
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'post_name' => 'bpc-157',
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'post_status' => 'publish',
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] );
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// Create and tag a blog post with peptide_topic = 'bpc-157'.
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$post_id = wp_insert_post( [
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'post_type' => 'post',
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'post_title' => 'BPC-157 Research',
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'post_status' => 'publish',
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] );
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wp_set_post_terms( $post_id, 'bpc-157', 'peptide_topic' );
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$result = $provider->get_posts( $peptide_id, 3 );
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assert( ! empty( $result ), 'Expected at least one post' );
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assert( 1 === count( $result ), 'Expected exactly one post' );
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assert( $post_id === $result[0]->ID, 'Expected post ID to match' );
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// Cleanup.
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wp_delete_post( $peptide_id, true );
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wp_delete_post( $post_id, true );
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}
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/**
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* Test: falls back to text search when taxonomy returns nothing.
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*/
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public function test_falls_back_to_search_when_no_taxonomy_matches() {
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$provider = new PR_Core_Internal_Posts_Provider();
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// Create a peptide post with no matching term.
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$peptide_id = wp_insert_post( [
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'post_type' => 'peptide',
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'post_title' => 'Semaglutide',
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'post_name' => 'semaglutide-unique',
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'post_status' => 'publish',
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] );
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// Create a blog post with "Semaglutide" in title (no peptide_topic tag).
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$post_id = wp_insert_post( [
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'post_type' => 'post',
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'post_title' => 'Semaglutide Dosing Guide',
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'post_status' => 'publish',
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] );
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$result = $provider->get_posts( $peptide_id, 3 );
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assert( ! empty( $result ), 'Expected fallback search to return posts' );
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assert( $post_id === $result[0]->ID, 'Expected fallback search to find title match' );
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// Cleanup.
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wp_delete_post( $peptide_id, true );
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wp_delete_post( $post_id, true );
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}
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/**
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* Test: never returns more posts than $limit.
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*/
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public function test_respects_limit_constraint() {
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$provider = new PR_Core_Internal_Posts_Provider();
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// Create peptide.
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$peptide_id = wp_insert_post( [
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'post_type' => 'peptide',
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'post_title' => 'TB-500',
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'post_name' => 'tb-500',
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'post_status' => 'publish',
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] );
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// Create 5 tagged posts.
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for ( $i = 0; $i < 5; ++$i ) {
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$post_id = wp_insert_post( [
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'post_type' => 'post',
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'post_title' => 'TB-500 Article ' . $i,
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'post_status' => 'publish',
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] );
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wp_set_post_terms( $post_id, 'tb-500', 'peptide_topic' );
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}
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$result = $provider->get_posts( $peptide_id, 3 );
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assert( 3 === count( $result ), 'Expected exactly 3 posts for limit=3' );
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// Cleanup.
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wp_delete_post( $peptide_id, true );
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}
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/**
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* Test: returns cached transient on second call.
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*/
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public function test_returns_cached_transient_on_second_call() {
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$provider = new PR_Core_Internal_Posts_Provider();
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// Create peptide.
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$peptide_id = wp_insert_post( [
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'post_type' => 'peptide',
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'post_title' => 'AOD-9604',
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'post_name' => 'aod-9604',
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'post_status' => 'publish',
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] );
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// First call: query and cache.
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$result_1 = $provider->get_posts( $peptide_id, 3 );
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// Verify transient was set.
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$cache_key = 'pr_core_related_' . $peptide_id;
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$cached = get_transient( $cache_key );
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assert( ! empty( $cached ), 'Expected transient to be set' );
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// Second call: should return cached data.
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$result_2 = $provider->get_posts( $peptide_id, 3 );
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// Results should match.
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if ( ! empty( $result_1 ) ) {
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assert( count( $result_1 ) === count( $result_2 ), 'Expected cached results to match' );
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}
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// Cleanup.
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wp_delete_post( $peptide_id, true );
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delete_transient( $cache_key );
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}
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}
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// Run tests if executed directly in PHPUnit context (tests/bootstrap.php will autoload).
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if ( function_exists( 'assert_options' ) ) {
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assert_options( ASSERT_ACTIVE, 1 );
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assert_options( ASSERT_WARNING, 0 );
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assert_options( ASSERT_BAIL, 1 );
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$test = new PR_Core_Internal_Posts_Provider_Test();
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$test->test_returns_empty_when_peptide_not_found();
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$test->test_returns_taxonomy_matched_posts();
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$test->test_falls_back_to_search_when_no_taxonomy_matches();
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$test->test_respects_limit_constraint();
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$test->test_returns_cached_transient_on_second_call();
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echo "All tests passed!\n";
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}
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