diff --git a/src/test/integration/tests/returnvalues.js b/src/test/integration/tests/returnvalues.js
index 6237680..9e82d8b 100644
--- a/src/test/integration/tests/returnvalues.js
+++ b/src/test/integration/tests/returnvalues.js
@@ -7,6 +7,7 @@ const {
   resume,
   stepIn,
   waitForPaused,
+  pauseTest
 } = require("../utils");

 function getLabel(dbg, index) {
@@ -25,6 +26,10 @@ async function testReturnValue(dbg, ctx, val) {
   evalInTab(dbg, `return_something(${val})`);
   await waitForPaused(dbg);

+  if (val == "0") {
+    await pauseTest()
+  }
+
   // "Step in" 3 times to get to the point where the debugger can
   // see the return value.
   await stepIn(dbg);
diff --git a/src/test/integration/utils/index.js b/src/test/integration/utils/index.js
index f5bfb95..164307c 100644
--- a/src/test/integration/utils/index.js
+++ b/src/test/integration/utils/index.js
@@ -49,7 +49,8 @@ const {
   findSource,
   isPaused,
   isVisibleWithin,
-  getSelector
+  getSelector,
+  pauseTest
 } = require("./shared")

 module.exports = {
diff --git a/src/test/integration/utils/shared.js b/src/test/integration/utils/shared.js
index 0d58763..5d0e945 100644
--- a/src/test/integration/utils/shared.js
+++ b/src/test/integration/utils/shared.js
@@ -95,6 +95,20 @@ function info(msg) {
   console.log(message)
 }

+
+window.resumeTest = undefined;
+/**
+ * Pause the test and let you interact with the debugger.
+ * The test can be resumed by invoking `resumeTest` in the console.
+ *
+ * @memberof mochitest
+ * @static
+ */
+function pauseTest() {
+  info("Test paused. Invoke resumeTest to continue.");
+  return new Promise(resolve => resumeTest = resolve);
+}
+
 module.exports = {
   findElement,
   findElementWithSelector,
@@ -104,5 +118,6 @@ module.exports = {
   getSelector,
   isPaused,
   isVisibleWithin,
-  info
+  info,
+  pauseTest
 }