1 files changed, 60 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-sourcemaps2.js b/devtools/client/debugger/test/mochitest/browser_dbg-sourcemaps2.js
new file mode 100644
index 0000000000..aaad44b1e8
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-sourcemaps2.js
@@ -0,0 +1,60 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+// Tests loading sourcemapped sources, setting breakpoints, and
+// stepping in them.
+
+"use strict";
+
+requestLongerTimeout(2);
+
+// This source map does not have source contents, so it's fetched separately
+add_task(async function () {
+  // NOTE: the CORS call makes the test run times inconsistent
+  const dbg = await initDebugger(
+    "doc-sourcemaps2.html",
+    "main.js",
+    "main.min.js"
+  );
+  const {
+    selectors: { getBreakpoint, getBreakpointCount },
+  } = dbg;
+
+  ok(true, "Original sources exist");
+  const mainSrc = findSource(dbg, "main.js");
+
+  await selectSource(dbg, mainSrc);
+
+  // Test that breakpoint is not off by a line.
+  await addBreakpoint(dbg, mainSrc, 4, 3);
+  is(getBreakpointCount(), 1, "One breakpoint exists");
+  ok(
+    getBreakpoint(createLocation({ source: mainSrc, line: 4, column: 2 })),
+    "Breakpoint has correct line"
+  );
+
+  await assertBreakpoint(dbg, 4);
+  invokeInTab("logMessage");
+
+  await waitForPausedInOriginalFileAndToggleMapScopes(dbg);
+  assertPausedAtSourceAndLine(dbg, mainSrc.id, 4);
+
+  // Tests the existence of the sourcemap link in the original source.
+  let sourceMapLink = findElement(dbg, "mappedSourceLink");
+  is(
+    sourceMapLink.textContent,
+    "To main.min.js",
+    "Sourcemap link in original source refers to the bundle"
+  );
+
+  await selectSource(dbg, "main.min.js");
+
+  // The mapped source link is computed asynchronously when we are on the bundle
+  sourceMapLink = await waitFor(() => findElement(dbg, "mappedSourceLink"));
+  is(
+    sourceMapLink.textContent,
+    "From main.js",
+    "Sourcemap link in bundle refers to the original source"
+  );
+});