This is a test paragraph with styling.
` renderer := NewPDFRenderer() // Act pdfBytes, err := renderer.RenderHTMLToPDF(html) // Assert if err != nil { t.Fatalf("Expected no error, got %v", err) } if len(pdfBytes) == 0 { t.Error("Expected non-empty PDF bytes") } // Check PDF magic number if string(pdfBytes[0:4]) != "%PDF" { t.Error("Output does not appear to be a PDF") } } func TestRenderHTMLToPDF_EmptyHTML(t *testing.T) { // Arrange html := "" renderer := NewPDFRenderer() // Act pdfBytes, err := renderer.RenderHTMLToPDF(html) // Assert - should still generate a PDF even if empty if err != nil { t.Fatalf("Expected no error for empty HTML, got %v", err) } if len(pdfBytes) == 0 { t.Error("Expected non-empty PDF bytes even for empty HTML") } } func TestImageToBase64DataURI_PNG(t *testing.T) { // Arrange - simple 1x1 red PNG pngData := []byte{ 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, } // Act dataURI := ImageToBase64DataURI(pngData, "image/png") // Assert if !strings.HasPrefix(dataURI, "data:image/png;base64,") { t.Errorf("Expected data URI to start with 'data:image/png;base64,', got %s", dataURI[:30]) } if len(dataURI) < 30 { t.Error("Expected base64 encoded data URI to be longer") } } func TestImageToBase64DataURI_JPEG(t *testing.T) { // Arrange jpegData := []byte{0xFF, 0xD8, 0xFF} // JPEG magic number // Act dataURI := ImageToBase64DataURI(jpegData, "image/jpeg") // Assert if !strings.HasPrefix(dataURI, "data:image/jpeg;base64,") { t.Error("Expected data URI to start with 'data:image/jpeg;base64,'") } }