1 files changed, 75 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_breakpoint-08.js b/devtools/server/tests/xpcshell/test_breakpoint-08.js
new file mode 100644
index 0000000000..bff0cc3b52
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_breakpoint-08.js
@@ -0,0 +1,75 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* eslint-disable no-shadow, max-nested-callbacks */
+
+"use strict";
+
+/**
+ * Check that setting a breakpoint in a line without code in a child script
+ * will skip forward, in a file with two scripts.
+ */
+
+add_task(
+  threadFrontTest(({ threadFront, debuggee }) => {
+    return new Promise(resolve => {
+      threadFront.once("paused", async function (packet) {
+        const line = debuggee.line0 + 3;
+        const source = await getSourceById(
+          threadFront,
+          packet.frame.where.actor
+        );
+
+        // this test has been disabled for a long time so the functionality doesn't work
+        const response = await threadFront.setBreakpoint(
+          { sourceUrl: source.url, line },
+          {}
+        );
+        // check that the breakpoint has properly skipped forward one line.
+        assert.equal(response.actuallocation.source.actor, source.actor);
+        // This is wrong - location is not defined, but the test has been disabled
+        // for a long time and currently doesn't work.
+        // eslint-disable-next-line no-undef
+        Assert.equal(response.actualLocation.line, location.line + 1);
+
+        threadFront.once("paused", function (packet) {
+          // Check the return value.
+          Assert.equal(packet.frame.where.actor, source.actor);
+          // eslint-disable-next-line no-undef
+          Assert.equal(packet.frame.where.line, location.line + 1);
+          Assert.equal(packet.why.type, "breakpoint");
+          Assert.equal(packet.why.actors[0], response.bpClient.actor);
+          // Check that the breakpoint worked.
+          Assert.equal(debuggee.a, 1);
+          Assert.equal(debuggee.b, undefined);
+
+          // Remove the breakpoint.
+          response.bpClient.remove(function (response) {
+            threadFront.resume().then(resolve);
+          });
+        });
+
+        // Continue until the breakpoint is hit.
+        threadFront.resume();
+      });
+
+      // prettier-ignore
+      Cu.evalInSandbox("var line0 = Error().lineNumber;\n" +
+                       "function foo() {\n" + // line0 + 1
+                       "  this.a = 1;\n" +    // line0 + 2
+                       "  // A comment.\n" +  // line0 + 3
+                       "  this.b = 2;\n" +    // line0 + 4
+                       "}\n",                 // line0 + 5
+                       debuggee,
+                       "1.7",
+                       "script1.js");
+
+      // prettier-ignore
+      Cu.evalInSandbox("var line1 = Error().lineNumber;\n" +
+                       "debugger;\n" +        // line1 + 1
+                       "foo();\n",           // line1 + 2
+                       debuggee,
+                       "1.7",
+                       "script2.js");
+    });
+  })
+);