<!DOCTYPE html>
<html>
  <head>
    <title>
      Test Exceptions from setValueCurveAtTime
    </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>
  </head>
  <body>
    <script id="layout-test-code">
      let sampleRate = 48000;
      // Some short duration because we don't need to run the test for very
      // long.
      let testDurationSec = 0.125;
      let testDurationFrames = testDurationSec * sampleRate;

      let audit = Audit.createTaskRunner();

      audit.define('setValueCurve', (task, should) => {
        let success = true;
        let context =
            new OfflineAudioContext(1, testDurationFrames, sampleRate);
        let g = context.createGain();
        let curve = new Float32Array(2);

        // Start time and duration for setValueCurveAtTime
        let curveStartTime = 0.1 * testDurationSec;
        let duration = 0.1 * testDurationSec;

        // Some time that is known to be during the setValueCurveTime interval.
        let automationTime = curveStartTime + duration / 2;

        should(
            () => {
              g.gain.setValueCurveAtTime(curve, curveStartTime, duration);
            },
            'setValueCurveAtTime(curve, ' + curveStartTime + ', ' + duration +
                ')')
            .notThrow();

        should(
            function() {
              g.gain.setValueAtTime(1, automationTime);
            },
            'setValueAtTime(1, ' + automationTime + ')')
            .throw(DOMException, 'NotSupportedError');

        should(
            function() {
              g.gain.linearRampToValueAtTime(1, automationTime);
            },
            'linearRampToValueAtTime(1, ' + automationTime + ')')
            .throw(DOMException, 'NotSupportedError');

        should(
            function() {
              g.gain.exponentialRampToValueAtTime(1, automationTime);
            },
            'exponentialRampToValueAtTime(1, ' + automationTime + ')')
            .throw(DOMException, 'NotSupportedError');

        should(
            function() {
              g.gain.setTargetAtTime(1, automationTime, 1);
            },
            'setTargetAtTime(1, ' + automationTime + ', 1)')
            .throw(DOMException, 'NotSupportedError');

        should(
            function() {
              g.gain.setValueAtTime(1, curveStartTime + 1.1 * duration);
            },
            'setValueAtTime(1, ' + (curveStartTime + 1.1 * duration) + ')')
            .notThrow();

        task.done();
      });

      audit.define('automations', (task, should) => {
        let context =
            new OfflineAudioContext(1, testDurationFrames, sampleRate);
        let g = context.createGain();

        let curve = new Float32Array(2);
        // Start time and duration for setValueCurveAtTime
        let startTime = 0;
        let timeInterval = testDurationSec / 10;
        let time;

        startTime += timeInterval;
        should(() => {
          g.gain.linearRampToValueAtTime(1, startTime);
        }, 'linearRampToValueAtTime(1, ' + startTime + ')').notThrow();

        startTime += timeInterval;
        should(() => {
          g.gain.exponentialRampToValueAtTime(1, startTime);
        }, 'exponentialRampToValueAtTime(1, ' + startTime + ')').notThrow();

        startTime += timeInterval;
        should(() => {
          g.gain.setTargetAtTime(1, startTime, 0.1);
        }, 'setTargetAtTime(1, ' + startTime + ', 0.1)').notThrow();

        startTime += timeInterval;
        should(() => {
          g.gain.setValueCurveAtTime(curve, startTime, 0.1);
        }, 'setValueCurveAtTime(curve, ' + startTime + ', 0.1)').notThrow();

        // Now try to setValueCurve that overlaps each of the above automations
        startTime = timeInterval / 2;

        for (let k = 0; k < 4; ++k) {
          time = startTime + timeInterval * k;
          should(
              () => {
                g.gain.setValueCurveAtTime(curve, time, 0.01);
              },
              'setValueCurveAtTime(curve, ' + time + ', 0.01)')
              .throw(DOMException, 'NotSupportedError');
        }

        // Elements of setValueCurve should be finite.
        should(
            () => {
              g.gain.setValueCurveAtTime(
                  Float32Array.from([NaN, NaN]), time, 0.01);
            },
            'setValueCurveAtTime([NaN, NaN], ' + time + ', 0.01)')
            .throw(TypeError);

        should(
            () => {
              g.gain.setValueCurveAtTime(
                  Float32Array.from([1, Infinity]), time, 0.01);
            },
            'setValueCurveAtTime([1, Infinity], ' + time + ', 0.01)')
            .throw(TypeError);

        let d = context.createDelay();
        // Check that we get warnings for out-of-range values and also throw for
        // non-finite values.
        should(
            () => {
              d.delayTime.setValueCurveAtTime(
                  Float32Array.from([1, 5]), time, 0.01);
            },
            'delayTime.setValueCurveAtTime([1, 5], ' + time + ', 0.01)')
            .notThrow();

        should(
            () => {
              d.delayTime.setValueCurveAtTime(
                  Float32Array.from([1, 5, Infinity]), time, 0.01);
            },
            'delayTime.setValueCurveAtTime([1, 5, Infinity], ' + time +
                ', 0.01)')
            .throw(TypeError);

        // One last test that prints out lots of digits for the time.
        time = Math.PI / 100;
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, time, 0.01);
            },
            'setValueCurveAtTime(curve, ' + time + ', 0.01)')
            .throw(DOMException, 'NotSupportedError');

        task.done();
      });

      audit.define('catch-exception', (task, should) => {
        // Verify that the curve isn't inserted into the time line even if we
        // catch the exception.
        let success = true;
        let context =
            new OfflineAudioContext(1, testDurationFrames, sampleRate);
        let gain = context.createGain();
        let source = context.createBufferSource();
        let buffer = context.createBuffer(1, 1, context.sampleRate);
        buffer.getChannelData(0)[0] = 1;
        source.buffer = buffer;
        source.loop = true;

        source.connect(gain);
        gain.connect(context.destination);

        gain.gain.setValueAtTime(1, 0);
        try {
          // The value curve has an invalid element. This automation shouldn't
          // be inserted into the timeline at all.
          gain.gain.setValueCurveAtTime(
              Float32Array.from([0, NaN]), 128 / context.sampleRate, .5);
        } catch (e) {
        };
        source.start();

        context.startRendering()
            .then(function(resultBuffer) {
              // Since the setValueCurve wasn't inserted, the output should be
              // exactly 1 for the entire duration.
              should(
                  resultBuffer.getChannelData(0),
                  'Handled setValueCurve exception so output')
                  .beConstantValueOf(1);

            })
            .then(() => task.done());
      });

      audit.define('start-end', (task, should) => {
        let context =
            new OfflineAudioContext(1, testDurationFrames, sampleRate);
        let g = context.createGain();
        let curve = new Float32Array(2);

        // Verify that a setValueCurve can start at the end of an automation.
        let time = 0;
        let timeInterval = testDurationSec / 50;
        should(() => {
          g.gain.setValueAtTime(1, time);
        }, 'setValueAtTime(1, ' + time + ')').notThrow();

        time += timeInterval;
        should(() => {
          g.gain.linearRampToValueAtTime(0, time);
        }, 'linearRampToValueAtTime(0, ' + time + ')').notThrow();

        // setValueCurve starts at the end of the linear ramp. This should be
        // fine.
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, time, timeInterval);
            },
            'setValueCurveAtTime(..., ' + time + ', ' + timeInterval + ')')
            .notThrow();

        // exponentialRamp ending one interval past the setValueCurve should be
        // fine.
        time += 2 * timeInterval;
        should(() => {
          g.gain.exponentialRampToValueAtTime(1, time);
        }, 'exponentialRampToValueAtTime(1, ' + time + ')').notThrow();

        // setValueCurve starts at the end of the exponential ramp. This should
        // be fine.
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, time, timeInterval);
            },
            'setValueCurveAtTime(..., ' + time + ', ' + timeInterval + ')')
            .notThrow();

        // setValueCurve at the end of the setValueCurve should be fine.
        time += timeInterval;
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, time, timeInterval);
            },
            'setValueCurveAtTime(..., ' + time + ', ' + timeInterval + ')')
            .notThrow();

        // setValueAtTime at the end of setValueCurve should be fine.
        time += timeInterval;
        should(() => {
          g.gain.setValueAtTime(0, time);
        }, 'setValueAtTime(0, ' + time + ')').notThrow();

        // setValueCurve at the end of setValueAtTime should be fine.
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, time, timeInterval);
            },
            'setValueCurveAtTime(..., ' + time + ', ' + timeInterval + ')')
            .notThrow();

        // setTarget starting at the end of setValueCurve should be fine.
        time += timeInterval;
        should(() => {
          g.gain.setTargetAtTime(1, time, 1);
        }, 'setTargetAtTime(1, ' + time + ', 1)').notThrow();

        task.done();
      });

      audit.define('curve overlap', (task, should) => {
        let context =
            new OfflineAudioContext(1, testDurationFrames, sampleRate);
        let g = context.createGain();
        let startTime = 5;
        let startTimeLater = 10;
        let startTimeEarlier = 2.5;
        let curveDuration = 10;
        let curveDurationShorter = 5;
        let curve = [1, 2, 3];

        // An initial curve event
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, startTime, curveDuration);
            },
            `g.gain.setValueCurveAtTime([${curve}], ${startTime}, ${curveDuration})`)
            .notThrow();

        // Check that an exception is thrown when trying to overlap two curves,
        // in various ways

        // Same start time and end time (curve exactly overlapping)
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, startTime, curveDuration);
            },
            `second g.gain.setValueCurveAtTime([${curve}], ${startTime}, ${curveDuration})`)
            .throw(DOMException, 'NotSupportedError');
        // Same start time, shorter end time
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, startTime, curveDurationShorter);
            },
            `g.gain.setValueCurveAtTime([${curve}], ${startTime}, ${curveDurationShorter})`)
            .throw(DOMException, 'NotSupportedError');
        // Earlier start time, end time after the start time an another curve
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, startTimeEarlier, curveDuration);
            },
            `g.gain.setValueCurveAtTime([${curve}], ${startTimeEarlier}, ${curveDuration})`)
            .throw(DOMException, 'NotSupportedError');
        // Start time after the start time of the other curve, but earlier than
        // its end.
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, startTimeLater, curveDuration);
            },
            `g.gain.setValueCurveAtTime([${curve}], ${startTimeLater}, ${curveDuration})`)
            .throw(DOMException, 'NotSupportedError');

        // New event wholly contained inside existing event
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, startTime + 1, curveDuration - 1);
            },
            `g.gain.setValueCurveAtTime([${curve}], ${startTime+1}, ${curveDuration-1})`)
            .throw(DOMException, 'NotSupportedError');
        // Old event completely contained inside new event
        should(
            () => {
              g.gain.setValueCurveAtTime(curve, startTime - 1, curveDuration + 1);
            },
            `g.gain.setValueCurveAtTime([${curve}], ${startTime-1}, ${curveDuration+1})`)
            .throw(DOMException, 'NotSupportedError');
        // Setting an event exactly at the end of the curve should work.
        should(
            () => {
              g.gain.setValueAtTime(1.0, startTime + curveDuration);
            },
            `g.gain.setValueAtTime(1.0, ${startTime + curveDuration})`)
            .notThrow();

        task.done();
      });

      audit.define('curve lengths', (task, should) => {
        let context =
            new OfflineAudioContext(1, testDurationFrames, sampleRate);
        let g = context.createGain();
        let time = 0;

        // Check for invalid curve lengths
        should(
            () => {
              g.gain.setValueCurveAtTime(Float32Array.from([]), time, 0.01);
            },
            'setValueCurveAtTime([], ' + time + ', 0.01)')
            .throw(DOMException, 'InvalidStateError');

        should(
            () => {
              g.gain.setValueCurveAtTime(Float32Array.from([1]), time, 0.01);
            },
            'setValueCurveAtTime([1], ' + time + ', 0.01)')
            .throw(DOMException, 'InvalidStateError');

        should(() => {
          g.gain.setValueCurveAtTime(Float32Array.from([1, 2]), time, 0.01);
        }, 'setValueCurveAtTime([1,2], ' + time + ', 0.01)').notThrow();

        task.done();
      });

      audit.run();
    </script>
  </body>
</html>