1 files changed, 62 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_breakpoint-18.js b/devtools/server/tests/xpcshell/test_breakpoint-18.js
new file mode 100644
index 0000000000..fb7a94fb29
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_breakpoint-18.js
@@ -0,0 +1,62 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Check that we only break on offsets that are entry points for the line we are
+ * breaking on. Bug 907278.
+ */
+
+add_task(
+  threadFrontTest(async ({ threadFront, client, debuggee }) => {
+    const packet = await executeOnNextTickAndWaitForPause(
+      () => evaluateTestCode(debuggee),
+      threadFront
+    );
+
+    const source = await getSourceById(threadFront, packet.frame.where.actor);
+    const location = { sourceUrl: source.url, line: 3 };
+    threadFront.setBreakpoint(location, {});
+    await client.waitForRequestsToSettle();
+
+    debuggee.console = { log: x => void x };
+
+    await resume(threadFront);
+
+    const packet2 = await executeOnNextTickAndWaitForPause(
+      debuggee.test,
+      threadFront
+    );
+    Assert.equal(packet2.why.type, "breakpoint");
+
+    threadFront.resume();
+
+    const packet3 = await waitForPause(threadFront);
+    testDbgStatement(packet3);
+
+    await resume(threadFront);
+  })
+);
+
+function evaluateTestCode(debuggee) {
+  Cu.evalInSandbox(
+    "debugger;\n" +
+      function test() {
+        console.log("foo bar");
+        debugger;
+      },
+    debuggee,
+    "1.8",
+    "http://example.com/",
+    1
+  );
+}
+
+function testDbgStatement({ why }) {
+  // Should continue to the debugger statement.
+  Assert.equal(why.type, "debuggerStatement");
+  // Not break on another offset from the same line (that isn't an entry point
+  // to the line)
+  Assert.notEqual(why.type, "breakpoint");
+}