1 files changed, 90 insertions, 0 deletions
diff --git a/test/reducers/completion.test.js b/test/reducers/completion.test.js
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+++ b/test/reducers/completion.test.js
@@ -0,0 +1,90 @@
+import { expect } from "chai";
+import actions from '../../src/actions';
+import completionReducer from '../../src/reducers/completion';
+
+describe("completion reducer", () => {
+  it ('return the initial state', () => {
+    let state = completionReducer(undefined, {});
+    expect(state).to.have.property('groupSelection', -1);
+    expect(state).to.have.property('itemSelection', -1);
+    expect(state).to.have.deep.property('groups', []);
+  });
+
+  it ('return next state for COMPLETION_SET_ITEMS', () => {
+    let state = {
+      groupSelection: 0,
+      itemSelection: 0,
+      groups: [],
+    }
+    let action = {
+      type: actions.COMPLETION_SET_ITEMS,
+      groups: [{
+        name: 'Apple',
+        items: [1, 2, 3]
+      }, {
+        name: 'Banana',
+        items: [4, 5, 6]
+      }]
+    }
+    state = completionReducer(state, action);
+    expect(state).to.have.property('groups', action.groups);
+    expect(state).to.have.property('groupSelection', -1);
+    expect(state).to.have.property('itemSelection', -1);
+  });
+
+  it ('return next state for COMPLETION_SELECT_NEXT', () => {
+    let action = { type: actions.COMPLETION_SELECT_NEXT };
+    let state = {
+      groupSelection: -1,
+      itemSelection: -1,
+      groups: [{
+        name: 'Apple',
+        items: [1, 2]
+      }, {
+        name: 'Banana',
+        items: [3]
+      }]
+    };
+
+    state = completionReducer(state, action);
+    expect(state).to.have.property('groupSelection', 0);
+    expect(state).to.have.property('itemSelection', 0);
+
+    state = completionReducer(state, action);
+    expect(state).to.have.property('groupSelection', 0);
+    expect(state).to.have.property('itemSelection', 1);
+
+    state = completionReducer(state, action);
+    state = completionReducer(state, action);
+    expect(state).to.have.property('groupSelection', -1);
+    expect(state).to.have.property('itemSelection', -1);
+  });
+
+  it ('return next state for COMPLETION_SELECT_PREV', () => {
+    let action = { type: actions.COMPLETION_SELECT_PREV };
+    let state = {
+      groupSelection: -1,
+      itemSelection: -1,
+      groups: [{
+        name: 'Apple',
+        items: [1, 2]
+      }, {
+        name: 'Banana',
+        items: [3]
+      }]
+    };
+
+    state = completionReducer(state, action);
+    expect(state).to.have.property('groupSelection', 1);
+    expect(state).to.have.property('itemSelection', 0);
+
+    state = completionReducer(state, action);
+    expect(state).to.have.property('groupSelection', 0);
+    expect(state).to.have.property('itemSelection', 1);
+
+    state = completionReducer(state, action);
+    state = completionReducer(state, action);
+    expect(state).to.have.property('groupSelection', -1);
+    expect(state).to.have.property('itemSelection', -1);
+  });
+});