Test interleaved processing and parameter changes

synth/Cargo.toml

@@ -6,6 +6,7 @@ authors = ["Aske Simon Christensen <blueberry@loonies.dk>"]
 [dependencies]
 vst2 = { path = "../../rust-vst2" }
 #vst2 = { git = "https://github.com/overdrivenpotato/rust-vst2.git" }
+rand = "0.3"
 
 [lib]
 name = "Oidos"

synth/src/lib.rs

@@ -3,12 +3,15 @@
 
 #[macro_use]
 extern crate vst2;
+extern crate rand;
 
 mod cache;
 mod generate;
 mod oidos_generate;
 mod synth;
 
+#[cfg(test)] use rand::{thread_rng, Rng};
+
 use vst2::plugin::Info;
 #[cfg(test)] use vst2::buffer::AudioBuffer;
 #[cfg(test)] use vst2::event::Event;
@@ -41,22 +44,41 @@ plugin_main!(OidosPlugin);
 #[test]
 fn test_oidos_plugin() {
 	let mut plugin = OidosPlugin::default();
-	plugin.set_sample_rate(44100.0);
-	plugin.get_info();
-
-	let event = Event::Midi {
-		data: [0x90, 45, 127],
-		delta_frames: 100,
-		live: true,
-		note_length: None,
-		note_offset: None,
-		detune: 0,
-		note_off_velocity: 0
-	};
-	plugin.process_events(vec![event]);
-
-	let mut left = [0f32; 300];
-	let mut right = [0f32; 300];
-	let buffer = AudioBuffer::new(vec![], vec![&mut left, &mut right]);
-	plugin.process(buffer);
+	plugin.set_sample_rate(500.0);
+	let nump = plugin.get_info().parameters;
+
+	let mut r = thread_rng();
+	for _it in 0..100 {
+		for _p in 0..r.gen_range(0, 2) {
+			plugin.set_parameter(r.gen_range(0, nump), r.gen_range(0f32, 1f32));
+		}
+
+		let block_size: usize = r.gen_range(100, 200);
+		let mut events = Vec::new();
+		for _e in 0..r.gen_range(0, 3) {
+			let on = r.gen_weighted_bool(3);
+			let event = Event::Midi {
+				data: [if on { 0x90u8 } else { 0x80u8 }, r.gen_range(60, 65), 127],
+				delta_frames: r.gen_range(0, block_size as i32),
+				live: true,
+				note_length: None,
+				note_offset: None,
+				detune: 0,
+				note_off_velocity: 0
+			};
+			events.push(event);
+		}
+		events.sort_by_key(|e| {
+			if let Event::Midi { delta_frames, ..} = *e {
+				delta_frames
+			} else {
+				0
+			}});
+		plugin.process_events(events);
+
+		let mut left = vec![0f32; block_size];
+		let mut right = vec![0f32; block_size];
+		let buffer = AudioBuffer::new(vec![], vec![&mut left, &mut right]);
+		plugin.process(buffer);
+	}
 }