1 files changed, 40 insertions, 0 deletions
diff --git a/history/modules/__tests__/TestSequences/ReplaceStateWarning.js b/history/modules/__tests__/TestSequences/ReplaceStateWarning.js
new file mode 100644
index 0000000..a2804ab
--- /dev/null
+++ b/history/modules/__tests__/TestSequences/ReplaceStateWarning.js
@@ -0,0 +1,40 @@
+import expect from 'expect';
+
+import execSteps from './execSteps.js';
+
+export default function(history, done) {
+  const steps = [
+    location => {
+      expect(location).toMatchObject({
+        pathname: '/'
+      });
+
+      history.replace('/home', { the: 'state' });
+    },
+    (location, action) => {
+      expect(action).toBe('REPLACE');
+      expect(location).toMatchObject({
+        pathname: '/home',
+        state: undefined
+      });
+
+      // We should see a warning message.
+      expect(warningMessage).toMatch(
+        'Hash history cannot replace state; it is ignored'
+      );
+    }
+  ];
+
+  let consoleWarn = console.warn; // eslint-disable-line no-console
+  let warningMessage;
+
+  // eslint-disable-next-line no-console
+  console.warn = message => {
+    warningMessage = message;
+  };
+
+  execSteps(steps, history, (...args) => {
+    console.warn = consoleWarn; // eslint-disable-line no-console
+    done(...args);
+  });
+}