Simple page content
`)) case "/complete": w.Write([]byte(`Complete page content
`)) case "/no-og": w.Write([]byte(`No OG tags here
`)) default: w.WriteHeader(http.StatusNotFound) } })) defer ts.Close() // Test with different configurations testCases := []struct { name string path string query string expectedTags map[string]string expectError bool }{ { name: "Simple page", path: "/simple", query: "", expectedTags: map[string]string{ "og:title": "Simple Page", "og:type": "website", }, expectError: false, }, { name: "Complete page", path: "/complete", query: "ref=test", expectedTags: map[string]string{ "og:title": "Complete Page", "og:description": "A page with many OG tags", "og:image": "http://example.com/image.jpg", "og:url": "http://example.com/complete", "og:type": "article", }, expectError: false, }, { name: "Page with no OG tags", path: "/no-og", query: "", expectedTags: map[string]string{}, expectError: false, }, { name: "Non-existent page", path: "/not-found", query: "", expectedTags: nil, expectError: false, }, } for _, tc := range testCases { t.Run(tc.name, func(t *testing.T) { // Create cache instance cache := NewOGTagCache(ts.URL, true, 1*time.Minute) // Create URL for test testURL, _ := url.Parse(ts.URL) testURL.Path = tc.path testURL.RawQuery = tc.query // Get OG tags ogTags, err := cache.GetOGTags(testURL) // Check error expectation if tc.expectError { if err == nil { t.Error("expected error, got nil") } return } if err != nil { t.Fatalf("unexpected error: %v", err) } // Verify all expected tags are present for key, expectedValue := range tc.expectedTags { if value, ok := ogTags[key]; !ok || value != expectedValue { t.Errorf("expected %s: %s, got: %s", key, expectedValue, value) } } // Verify no extra tags are present if len(ogTags) != len(tc.expectedTags) { t.Errorf("expected %d tags, got %d", len(tc.expectedTags), len(ogTags)) } // Test cache retrieval cachedOGTags, err := cache.GetOGTags(testURL) if err != nil { t.Fatalf("failed to get OG tags from cache: %v", err) } // Verify cached tags match for key, expectedValue := range tc.expectedTags { if value, ok := cachedOGTags[key]; !ok || value != expectedValue { t.Errorf("cached value - expected %s: %s, got: %s", key, expectedValue, value) } } }) } }