Add test already added in MC bug 1450145. (#5856)

Author: loganfsmyth

src/test/mochitest/browser.ini

@@ -130,6 +130,7 @@ support-files =
 
 [browser_dbg-asm.js]
 [browser_dbg-async-stepping.js]
+[browser_dbg-babel-breakpoint-console.js]
 [browser_dbg-babel-scopes.js]
 [browser_dbg-babel-stepping.js]
 [browser_dbg-babel-preview.js]

src/test/mochitest/browser_dbg-babel-breakpoint-console.js

@@ -0,0 +1,95 @@
+
+async function evalInConsoleAtPoint(dbg, fixture, { line, column }, statements) {
+  const { selectors: { getBreakpoint, getBreakpoints }, getState } = dbg;
+
+  const filename = `fixtures/${fixture}/input.js`;
+  await waitForSources(dbg, filename);
+
+  ok(true, "Original sources exist");
+  const source = findSource(dbg, filename);
+
+  await selectSource(dbg, source);
+
+  // Test that breakpoint is not off by a line.
+  await addBreakpoint(dbg, source, line);
+
+  is(getBreakpoints(getState()).size, 1, "One breakpoint exists");
+  ok(
+    getBreakpoint(getState(), { sourceId: source.id, line, column }),
+    "Breakpoint has correct line"
+  );
+
+  const fnName = fixture.replace(/-([a-z])/g, (s, c) => c.toUpperCase());
+
+  const invokeResult = invokeInTab(fnName);
+
+  let invokeFailed = await Promise.race([
+    waitForPaused(dbg),
+    invokeResult.then(() => new Promise(() => {}), () => true)
+  ]);
+
+  if (invokeFailed) {
+    return invokeResult;
+  }
+
+  assertPausedLocation(dbg);
+
+  await assertConsoleEval(dbg, statements);
+
+  await removeBreakpoint(dbg, source.id, line, column);
+
+  is(getBreakpoints(getState()).size, 0, "Breakpoint reverted");
+
+  await resume(dbg);
+
+  // If the invoke errored later somehow, capture here so the error is reported nicely.
+  await invokeResult;
+
+  ok(true, `Ran tests for ${fixture} at line ${line} column ${column}`);
+}
+
+async function assertConsoleEval(dbg, statements) {
+  const jsterm = (await dbg.toolbox.selectTool("webconsole")).hud.jsterm;
+
+  for (const [index, statement] of statements.entries()) {
+    await dbg.client.evaluate(`
+      window.TEST_RESULT = false;
+    `);
+    await jsterm.execute(`
+      TEST_RESULT = ${statement};
+    `);
+
+    const result = await dbg.client.evaluate(`window.TEST_RESULT`);
+    is(result.result, true, `'${statement}' evaluates to true`);
+  }
+}
+
+add_task(async function() {
+  await pushPref("devtools.debugger.features.map-scopes", true);
+
+  const dbg = await initDebugger("doc-babel.html");
+
+  await evalInConsoleAtPoint(dbg, "eval-source-maps", { line: 14, column: 4 }, [
+    "one === 1",
+    "two === 4",
+    "three === 5",
+  ]);
+
+  await evalInConsoleAtPoint(dbg, "imported-bindings", { line: 20, column: 2 }, [
+    `aDefault === "a-default"`,
+    `anAliased === "an-original"`,
+    `aNamed === "a-named"`,
+    `aDefault2 === "a-default2"`,
+    `anAliased2 === "an-original2"`,
+    `aNamed2 === "a-named2"`,
+    `aDefault3 === "a-default3"`,
+    `anAliased3 === "an-original3"`,
+    `aNamed3 === "a-named3"`,
+  ]);
+
+  await evalInConsoleAtPoint(dbg, "shadowed-vars", { line: 18, column: 6 }, [
+    `aVar === "var3"`,
+    `aLet === "let3"`,
+    `aConst === "const3"`,
+  ]);
+});