test(oak-codec, oak-core): boundary and branch coverage

Fixture-backed unit and contract tests for FFmpeg helpers and state machines, OCIO color factories, wgpu backend fallbacks, and the safe parts of the platform import module (review report section 10.2).
2026-09-22 20:54:04 +08:00
parent df3957b0dc
commit 12ca9d1d7a
10 changed files with 3491 additions and 72 deletions
@@ -1118,4 +1118,65 @@ mod tests {
 		assert_eq!(offset_of!(EncodingParams, color_range), 1548);
 	}
 }
- 		assert_eq!(offset_of!(EncodingParams, color_range), 1548);
+
+#[cfg(test)]
+mod tests_coverage {
+	use super::*;
+
+	#[test]
+	fn load_rejects_malformed_and_foreign_documents() {
+		let mut p = EncodingParams::default();
+		for doc in [
+			"",
+			"<export",
+			"<export x=1></export>",
+			"<export x=\"1></export>",
+			"<export></other>",
+			"<export><video/>text</export>",
+			"<not-export/>",
+		] {
+			assert!(p.load(doc).is_err(), "must reject: {doc}");
+		}
+	}
+
+	#[test]
+	fn load_maps_video_audio_and_falls_back_on_unknown_codes() {
+		let mut p = EncodingParams::default();
+		p.load(
+			r#"<export><filename>out.mov</filename><format>2</format>
+			<video enabled="1"><codec>4</codec><width>1920</width><height>1080</height>
+			<format>4</format><timebase>30000/1001</timebase>
+			<pixelaspect>1/1</pixelaspect><vscale>2</vscale></video>
+			<audio enabled="0"><format>5</format><bitrate>192000</bitrate></audio>
+			</export>"#,
+		)
+		.unwrap();
+		assert_eq!(p.extension(), "mp4", "format 2 is MPEG-4 video");
+		assert_eq!(p.video_width, 1920);
+		assert_eq!(p.video_height, 1080);
+		assert_eq!(p.video_pixel_format, PixelFormat::F32);
+		assert_eq!(p.video_time_base_num, 30000);
+		assert_eq!(p.video_time_base_den, 1001);
+		assert_eq!(p.video_scaling_method, VideoScalingMethod::Crop);
+		assert_eq!(p.audio_sample_format, SampleFormat::F64Planar);
+		assert_eq!(p.audio_bit_rate, 192000);
+
+		// Unknown numeric codes fall back to Invalid / Stretch.
+		let mut p = EncodingParams::default();
+		p.load(
+			r#"<export><video><format>99</format><vscale>99</vscale></video>
+			<audio><format>99</format></audio></export>"#,
+		)
+		.unwrap();
+		assert_eq!(p.video_pixel_format, PixelFormat::Invalid);
+		assert_eq!(p.video_scaling_method, VideoScalingMethod::Stretch);
+		assert_eq!(p.audio_sample_format, SampleFormat::Invalid);
+
+		// -1 is the explicit Invalid code; vscale 0 is Fit.
+		let mut p = EncodingParams::default();
+		p.load(r#"<export><video><format>-1</format><vscale>0</vscale></video></export>"#)
+			.unwrap();
+		assert_eq!(p.video_pixel_format, PixelFormat::Invalid);
+		assert_eq!(p.video_scaling_method, VideoScalingMethod::Fit);
+	}
+}