Add mark action and reducer

test/content/reducers/mark.test.js

@@ -0,0 +1,39 @@
+import actions from 'content/actions';
+import reducer from 'content/reducers/mark';
+
+describe("mark reducer", () => {
+  it('return the initial state', () => {
+    let state = reducer(undefined, {});
+    expect(state.set).to.be.false;
+    expect(state.jump).to.be.false;
+    expect(state.marks).to.be.empty;
+  });
+
+  it('starts set mode', () => {
+    let action = { type: actions.MARK_START_SET };
+    let state = reducer(undefined, action);
+    expect(state.set).to.be.true;
+  });
+
+  it('starts jump mode', () => {
+    let action = { type: actions.MARK_START_JUMP };
+    let state = reducer(undefined, action);
+    expect(state.jump).to.be.true;
+  });
+
+  it('cancels set and jump mode', () => {
+    let action = { type: actions.MARK_CANCEL };
+    let state = reducer({ set: true }, action);
+    expect(state.set).to.be.false;
+
+    state = reducer({ jump: true }, action);
+    expect(state.jump).to.be.false;
+  });
+
+  it('stores local mark', () => {
+    let action = { type: actions.MARK_SET_LOCAL, key: 'a', y: 10 };
+    let state = reducer(undefined, action);
+    expect(state.marks['a']).to.be.an('object')
+    expect(state.marks['a'].y).to.equal(10)
+  });
+});