1 files changed, 36 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_setBreakpoint-on-column.js b/devtools/server/tests/xpcshell/test_setBreakpoint-on-column.js
new file mode 100644
index 0000000000..200d8b44e6
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_setBreakpoint-on-column.js
@@ -0,0 +1,36 @@
+"use strict";
+
+const SOURCE_URL = getFileUrl("setBreakpoint-on-column.js");
+
+add_task(
+  threadFrontTest(
+    async ({ threadFront, debuggee }) => {
+      const promise = waitForNewSource(threadFront, SOURCE_URL);
+      loadSubScript(SOURCE_URL, debuggee);
+      const { source } = await promise;
+
+      const location = { sourceUrl: source.url, line: 4, column: 21 };
+      setBreakpoint(threadFront, location);
+
+      const packet = await executeOnNextTickAndWaitForPause(function () {
+        Cu.evalInSandbox("f()", debuggee);
+      }, threadFront);
+      const environment = await packet.frame.getEnvironment();
+      const why = packet.why;
+      Assert.equal(why.type, "breakpoint");
+      Assert.equal(why.actors.length, 1);
+      const frame = packet.frame;
+      const where = frame.where;
+      Assert.equal(where.actor, source.actor);
+      Assert.equal(where.line, location.line);
+      Assert.equal(where.column, location.column);
+      const variables = environment.bindings.variables;
+      Assert.equal(variables.a.value, 1);
+      Assert.equal(variables.b.value.type, "undefined");
+      Assert.equal(variables.c.value.type, "undefined");
+
+      await resume(threadFront);
+    },
+    { doNotRunWorker: true }
+  )
+);