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diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-large-endtime.html b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-large-endtime.html
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+++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-large-endtime.html
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+<!DOCTYPE html>
+<html>
+  <head>
+    <title>
+      AudioParam with Huge End Time
+    </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;
+      // Render for some small (but fairly arbitrary) time.
+      let renderDuration = 0.125;
+      // Any huge time value that won't fit in a size_t (2^64 on a 64-bit
+      // machine).
+      let largeTime = 1e300;
+
+      let audit = Audit.createTaskRunner();
+
+      // See crbug.com/582701.  Create an audioparam with a huge end time and
+      // verify that to automation is run.  We don't care about the actual
+      // results, just that it runs.
+
+      // Test linear ramp with huge end time
+      audit.define('linearRamp', (task, should) => {
+        let graph = createGraph();
+        graph.gain.gain.linearRampToValueAtTime(0.1, largeTime);
+
+        graph.source.start();
+        graph.context.startRendering()
+            .then(function(buffer) {
+              should(true, 'linearRampToValue(0.1, ' + largeTime + ')')
+                  .message('successfully rendered', 'unsuccessfully rendered');
+            })
+            .then(() => task.done());
+      });
+
+      // Test exponential ramp with huge end time
+      audit.define('exponentialRamp', (task, should) => {
+        let graph = createGraph();
+        graph.gain.gain.exponentialRampToValueAtTime(.1, largeTime);
+
+        graph.source.start();
+        graph.context.startRendering()
+            .then(function(buffer) {
+              should(true, 'exponentialRampToValue(0.1, ' + largeTime + ')')
+                  .message('successfully rendered', 'unsuccessfully rendered');
+            })
+            .then(() => task.done());
+      });
+
+      audit.run();
+
+      // Create the graph and return the context, the source, and the gain node.
+      function createGraph() {
+        let context =
+            new OfflineAudioContext(1, renderDuration * sampleRate, sampleRate);
+        let src = context.createBufferSource();
+        src.buffer = createConstantBuffer(context, 1, 1);
+        src.loop = true;
+        let gain = context.createGain();
+        src.connect(gain);
+        gain.connect(context.destination);
+        gain.gain.setValueAtTime(1, 0.1 / sampleRate);
+
+        return {context: context, gain: gain, source: src};
+      }
+    </script>
+  </body>
+</html>