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test/content/reducers/input.test.js

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+import { expect } from "chai";
+import actions from 'content/actions';
+import inputReducer from 'content/reducers/input';
+
+describe("input reducer", () => {
+  it('return the initial state', () => {
+    let state = inputReducer(undefined, {});
+    expect(state).to.have.deep.property('keys', '');
+  });
+
+  it('return next state for INPUT_KEY_PRESS', () => {
+    let action = { type: actions.INPUT_KEY_PRESS, key: 'a' };
+    let state = inputReducer(undefined, action);
+    expect(state).to.have.deep.property('keys', 'a');
+
+    action = { type: actions.INPUT_KEY_PRESS, key: '<C-B>' };
+    state = inputReducer(state, action);
+    expect(state).to.have.deep.property('keys', 'a<C-B>');
+  });
+
+  it('return next state for INPUT_CLEAR_KEYS', () => {
+    let action = { type: actions.INPUT_CLEAR_KEYS };
+    let state = inputReducer({ keys: 'abc' }, action);
+    expect(state).to.have.deep.property('keys', '');
+  });
+});