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+<!doctype html>
+<meta charset=utf-8>
+<html>
+ <head>
+ <title>Test linearRampToValue with end time in the past</title>
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+ <script src="/webaudio/resources/audit-util.js"></script>
+ <script src="/webaudio/resources/audit.js"></script>
+ <script src="retrospective-test.js"></script>
+ </head>
+ <body>
+ <script>
+ let audit = Audit.createTaskRunner();
+
+ audit.define(
+ {
+ label: 'test',
+ description: 'Test linearRampToValue with end time in the past'
+ },
+ (task, should) => {
+ let {context, source, test, reference} = setupRetrospectiveGraph();
+
+ // Suspend the context at this frame so we can synchronously set up
+ // automations.
+ const suspendFrame = 128;
+
+ context.suspend(suspendFrame / context.sampleRate)
+ .then(() => {
+ // Call setTargetAtTime with a time in the past
+ test.gain.linearRampToValueAtTime(
+ 0.1, 0.5 * context.currentTime);
+ test.gain.linearRampToValueAtTime(0.9, 1.0);
+
+ reference.gain.linearRampToValueAtTime(
+ 0.1, context.currentTime);
+ reference.gain.linearRampToValueAtTime(0.9, 1.0);
+ })
+ .then(() => context.resume());
+
+ source.start();
+
+ context.startRendering()
+ .then(resultBuffer => {
+ let testValue = resultBuffer.getChannelData(0);
+ let referenceValue = resultBuffer.getChannelData(1);
+
+ // Until the suspendFrame, both should be exactly equal to 1.
+ should(
+ testValue.slice(0, suspendFrame),
+ `Test[0:${suspendFrame - 1}]`)
+ .beConstantValueOf(1);
+ should(
+ referenceValue.slice(0, suspendFrame),
+ `Reference[0:${suspendFrame - 1}]`)
+ .beConstantValueOf(1);
+
+ // After the suspendFrame, both should be equal (and not
+ // constant)
+ should(
+ testValue.slice(suspendFrame), `Test[${suspendFrame}:]`)
+ .beEqualToArray(referenceValue.slice(suspendFrame));
+ })
+ .then(() => task.done());
+ });
+
+ audit.run();
+ </script>
+ </body>
+</html>