1 files changed, 24 insertions, 0 deletions
diff --git a/test/unit/actions/warning_test.js b/test/unit/actions/warning_test.js
new file mode 100644
index 000000000..37be9ee85
--- /dev/null
+++ b/test/unit/actions/warning_test.js
@@ -0,0 +1,24 @@
+var jsdom = require('mocha-jsdom')
+var assert = require('assert')
+var freeze = require('deep-freeze-strict')
+var path = require('path')
+
+var actions = require(path.join(__dirname, '..', '..', '..', 'ui', 'app', 'actions.js'))
+var reducers = require(path.join(__dirname, '..', '..',  '..', 'ui', 'app', 'reducers.js'))
+
+describe('action DISPLAY_WARNING', function() {
+
+  it('sets appState.warning to provided value', function() {
+    var initialState = {
+      appState: {},
+    }
+    freeze(initialState)
+
+    const warningText = 'This is a sample warning message'
+
+    const action = actions.displayWarning(warningText)
+    const resultingState = reducers(initialState, action)
+
+    assert.equal(resultingState.appState.warning, warningText, 'warning text set')
+  });
+});