1 files changed, 66 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-sourcemaps-reload.js b/devtools/client/debugger/test/mochitest/browser_dbg-sourcemaps-reload.js
new file mode 100644
index 0000000000..16e87bec6d
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-sourcemaps-reload.js
@@ -0,0 +1,66 @@
+/* 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/>. */
+
+/*
+ * Test reloading:
+ * 1. reload the source
+ * 2. re-sync breakpoints
+ */
+
+add_task(async function() {
+  const dbg = await initDebugger("doc-minified.html");
+
+  await navigate(dbg, "sourcemaps-reload/doc-sourcemaps-reload.html", "v1.js");
+
+  info("Add initial breakpoint");
+  await selectSource(dbg, "v1.js");
+  await addBreakpoint(dbg, "v1.js", 6);
+
+  let breakpoint = getBreakpoints(dbg)[0];
+  is(breakpoint.location.line, 6);
+
+  info("Reload with a new version of the file");
+  const syncBp = waitForDispatch(dbg, "SET_BREAKPOINT");
+  await navigate(dbg, "doc-sourcemaps-reload2.html", "v1.js");
+
+  await syncBp;
+  breakpoint = getBreakpoints(dbg)[0];
+
+  is(breakpoint.location.line, 9);
+  is(breakpoint.generatedLocation.line, 79);
+
+  info("Add a second breakpoint");
+  await addBreakpoint(dbg, "v1.js", 13);
+  is(getBreakpointCount(dbg), 2, "No breakpoints");
+
+  // NOTE: When we reload, the `foo` function and the
+  // module is no longer 13 lines long
+  info("Reload and observe no breakpoints");
+  await navigate(dbg, "doc-sourcemaps-reload3.html", "v1.js");
+  await waitForSource(dbg, "v1");
+
+  // There will initially be zero breakpoints, but wait to make sure none are
+  // installed while syncing.
+  await waitForTime(1000);
+
+  is(getBreakpointCount(dbg), 0, "No breakpoints");
+});
+
+async function waitForBreakpoint(dbg, location) {
+  return waitForState(
+    dbg,
+    state => {
+      return dbg.selectors.getBreakpoint(location);
+    },
+    "Waiting for breakpoint"
+  );
+}
+
+function getBreakpoints(dbg) {
+  return dbg.selectors.getBreakpointsList();
+}
+
+function getBreakpointCount(dbg) {
+  return dbg.selectors.getBreakpointCount();
+}
+\ No newline at end of file