1 files changed, 47 insertions, 0 deletions
diff --git a/test/reducers/follow.test.js b/test/reducers/follow.test.js
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+++ b/test/reducers/follow.test.js
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+import { expect } from "chai";
+import actions from '../../src/actions';
+import followReducer from '../../src/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);
+  });
+
+  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: 100};
+    let state = followReducer({ keys: [] }, action);
+    expect(state).to.have.deep.property('keys', [100]);
+
+    action = { type: actions.FOLLOW_KEY_PRESS, key: 200};
+    state = followReducer(state, action);
+    expect(state).to.have.deep.property('keys', [100, 200]);
+  });
+
+  it ('returns next state for FOLLOW_BACKSPACE', () => {
+    let action = { type: actions.FOLLOW_BACKSPACE };
+    let state = followReducer({ keys: [100, 200] }, action);
+    expect(state).to.have.deep.property('keys', [100]);
+
+    state = followReducer(state, action);
+    expect(state).to.have.deep.property('keys', []);
+
+    state = followReducer(state, action);
+    expect(state).to.have.deep.property('keys', []);
+  });
+});