1 files changed, 48 insertions, 0 deletions
diff --git a/test/content/reducers/follow.test.js b/test/content/reducers/follow.test.js
new file mode 100644
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+++ b/test/content/reducers/follow.test.js
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+import { expect } from "chai";
+import actions from 'content/actions';
+import followReducer from 'content/reducers/follow';
+
+describe('follow reducer', () => {
+  it ('returns the initial state', () => {
+    let state = followReducer(undefined, {});
+    expect(state).to.have.property('enabled', false);
+    expect(state).to.have.property('newTab');
+    expect(state).to.have.deep.property('keys', '');
+  });
+
+  it ('returns next state for FOLLOW_ENABLE', () => {
+    let action = { type: actions.FOLLOW_ENABLE, newTab: true };
+    let state = followReducer({ enabled: false, newTab: false }, action);
+    expect(state).to.have.property('enabled', true);
+    expect(state).to.have.property('newTab', true);
+    expect(state).to.have.property('keys', '');
+  });
+
+  it ('returns next state for FOLLOW_DISABLE', () => {
+    let action = { type: actions.FOLLOW_DISABLE };
+    let state = followReducer({ enabled: true }, action);
+    expect(state).to.have.property('enabled', false);
+  });
+
+  it ('returns next state for FOLLOW_KEY_PRESS', () => {
+    let action = { type: actions.FOLLOW_KEY_PRESS, key: 'a'};
+    let state = followReducer({ keys: '' }, action);
+    expect(state).to.have.deep.property('keys', 'a');
+
+    action = { type: actions.FOLLOW_KEY_PRESS, key: 'b'};
+    state = followReducer(state, action);
+    expect(state).to.have.deep.property('keys', 'ab');
+  });
+
+  it ('returns next state for FOLLOW_BACKSPACE', () => {
+    let action = { type: actions.FOLLOW_BACKSPACE };
+    let state = followReducer({ keys: 'ab' }, action);
+    expect(state).to.have.deep.property('keys', 'a');
+
+    state = followReducer(state, action);
+    expect(state).to.have.deep.property('keys', '');
+
+    state = followReducer(state, action);
+    expect(state).to.have.deep.property('keys', '');
+  });
+});