1 files changed, 56 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_listsources-01.js b/devtools/server/tests/xpcshell/test_listsources-01.js
new file mode 100644
index 0000000000..8604fe4dbc
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_listsources-01.js
@@ -0,0 +1,56 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Check basic getSources functionality.
+ */
+
+var gNumTimesSourcesSent = 0;
+
+add_task(
+  threadFrontTest(async ({ threadFront, debuggee, client }) => {
+    client.request = (function(origRequest) {
+      return function(request, onResponse) {
+        if (request.type === "sources") {
+          ++gNumTimesSourcesSent;
+        }
+        return origRequest.call(this, request, onResponse);
+      };
+    })(client.request);
+
+    await executeOnNextTickAndWaitForPause(
+      () => evalCode(debuggee),
+      threadFront
+    );
+
+    const response = await threadFront.getSources();
+
+    Assert.ok(
+      response.sources.some(function(s) {
+        return s.url && s.url.match(/test_listsources-01.js/);
+      })
+    );
+
+    Assert.ok(
+      gNumTimesSourcesSent <= 1,
+      "Should only send one sources request at most, even though we" +
+        " might have had to send one to determine feature support."
+    );
+
+    threadFront.resume();
+  })
+);
+
+function evalCode(debuggee) {
+  /* eslint-disable */
+  Cu.evalInSandbox(
+    "var line0 = Error().lineNumber;\n" +
+    "debugger;\n" + // line0 + 1
+    "var a = 1;\n" + // line0 + 2
+      "var b = 2;\n", // line0 + 3
+    debuggee
+  );
+  /* eslint-enable */
+}