1 files changed, 162 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_stepping-12.js b/devtools/server/tests/xpcshell/test_stepping-12.js
new file mode 100644
index 0000000000..de96faf59f
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_stepping-12.js
@@ -0,0 +1,162 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Check that step out stops at the parent and the parent's parent.
+ * This checks for the failure found in bug 1530549.
+ */
+
+const sourceUrl = "test_stepping-10-test-code.js";
+
+add_task(
+  threadFrontTest(async args => {
+    dumpn("Evaluating test code and waiting for first debugger statement");
+
+    await testGenerator(args);
+    await testAwait(args);
+    await testInterleaving(args);
+    await testMultipleSteps(args);
+  })
+);
+
+async function testAwait({ threadFront, debuggee }) {
+  function evaluateTestCode() {
+    Cu.evalInSandbox(
+      `
+        (async function() {
+          debugger;
+          r = await Promise.resolve('yay');
+          a = 4;
+        })();
+      `,
+      debuggee,
+      "1.8",
+      sourceUrl,
+      1
+    );
+  }
+
+  await executeOnNextTickAndWaitForPause(evaluateTestCode, threadFront);
+
+  dumpn("Step Over and land on line 5");
+  const step1 = await stepOver(threadFront);
+  equal(step1.frame.where.line, 4);
+  equal(step1.frame.where.column, 10);
+
+  const step2 = await stepOver(threadFront);
+  equal(step2.frame.where.line, 5);
+  equal(step2.frame.where.column, 10);
+  equal(debuggee.r, "yay");
+  await resume(threadFront);
+}
+
+async function testInterleaving({ threadFront, debuggee }) {
+  function evaluateTestCode() {
+    Cu.evalInSandbox(
+      `
+        (async function simpleRace() {
+          debugger;
+          this.result = await new Promise((r) => {
+            Promise.resolve().then(() => { debugger });
+            Promise.resolve().then(r('yay'))
+          })
+          var a = 2;
+          debugger;
+        })()
+      `,
+      debuggee,
+      "1.8",
+      sourceUrl,
+      1
+    );
+  }
+
+  await executeOnNextTickAndWaitForPause(evaluateTestCode, threadFront);
+
+  dumpn("Step Over and land on line 5");
+  const step1 = await stepOver(threadFront);
+  equal(step1.frame.where.line, 4);
+
+  const step2 = await stepOver(threadFront);
+  equal(step2.frame.where.line, 5);
+  equal(step2.frame.where.column, 43);
+
+  const step3 = await resumeAndWaitForPause(threadFront);
+  equal(step3.frame.where.line, 9);
+  equal(debuggee.result, "yay");
+
+  await resume(threadFront);
+}
+
+async function testMultipleSteps({ threadFront, debuggee }) {
+  function evaluateTestCode() {
+    Cu.evalInSandbox(
+      `
+        (async function simpleRace() {
+          debugger;
+          await Promise.resolve();
+          var a = 2;
+          await Promise.resolve();
+          var b = 2;
+          await Promise.resolve();
+          debugger;
+        })()
+      `,
+      debuggee,
+      "1.8",
+      sourceUrl,
+      1
+    );
+  }
+
+  await executeOnNextTickAndWaitForPause(evaluateTestCode, threadFront);
+
+  const step1 = await stepOver(threadFront);
+  equal(step1.frame.where.line, 4);
+
+  const step2 = await stepOver(threadFront);
+  equal(step2.frame.where.line, 5);
+
+  const step3 = await stepOver(threadFront);
+  equal(step3.frame.where.line, 6);
+  resume(threadFront);
+}
+
+async function testGenerator({ threadFront, debuggee }) {
+  function evaluateTestCode() {
+    Cu.evalInSandbox(
+      `
+        (async function() {
+          function* makeSteps() {
+            debugger;
+            yield 1;
+            yield 2;
+            return 3;
+          }
+          const s = makeSteps();
+          s.next();
+          s.next();
+          s.next();
+        })()
+      `,
+      debuggee,
+      "1.8",
+      sourceUrl,
+      1
+    );
+  }
+
+  await executeOnNextTickAndWaitForPause(evaluateTestCode, threadFront);
+
+  const step1 = await stepOver(threadFront);
+  equal(step1.frame.where.line, 5);
+
+  const step2 = await stepOver(threadFront);
+  equal(step2.frame.where.line, 6);
+
+  const step3 = await stepOver(threadFront);
+  equal(step3.frame.where.line, 7);
+  await resume(threadFront);
+}