Added basic tests

jest.config.js

@@ -12,6 +12,7 @@ module.exports = {
     ],
     collectCoverageFrom: [
         'utils/**.js',
+        'reducers/utils/**.js',
     ],
     setupFiles: [
         './support/setupJest.js',

src/reducers/utils/__tests__/__snapshots__/index.test.js.snap

@@ -0,0 +1,37 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`reducers utils observeChanges shoud be the same - returns false 1`] = `false`;
+
+exports[`reducers utils observeChanges shoud be the same - returns false 2`] = `false`;
+
+exports[`reducers utils observeChanges shoud be the same - returns false 3`] = `false`;
+
+exports[`reducers utils observeChanges shoud be the same - returns false 4`] = `false`;
+
+exports[`reducers utils observeChanges shoud be the same - returns false 5`] = `false`;
+
+exports[`reducers utils observeChanges shoud be the same - returns false 6`] = `false`;
+
+exports[`reducers utils observeChanges shoud be the same - returns false 7`] = `false`;
+
+exports[`reducers utils observeChanges shoud be the same - returns false 8`] = `false`;
+
+exports[`reducers utils observeChanges shoud be the same - returns false 9`] = `false`;
+
+exports[`reducers utils observeChanges shoul NOT be the same - returns true 1`] = `true`;
+
+exports[`reducers utils observeChanges shoul NOT be the same - returns true 2`] = `true`;
+
+exports[`reducers utils observeChanges shoul NOT be the same - returns true 3`] = `true`;
+
+exports[`reducers utils observeChanges shoul NOT be the same - returns true 4`] = `true`;
+
+exports[`reducers utils observeChanges shoul NOT be the same - returns true 5`] = `true`;
+
+exports[`reducers utils observeChanges shoul NOT be the same - returns true 6`] = `true`;
+
+exports[`reducers utils observeChanges shoul NOT be the same - returns true 7`] = `true`;
+
+exports[`reducers utils observeChanges shoul NOT be the same - returns true 8`] = `true`;
+
+exports[`reducers utils observeChanges shoul NOT be the same - returns true 9`] = `true`;

src/reducers/utils/__tests__/index.test.js

@@ -0,0 +1,99 @@
+import * as reducerUtils from '../index';
+
+describe('reducers utils', () => {
+    it('observeChanges shoud be the same - returns false', () => {
+        const data = [
+            // example of same data (false)
+            {
+                pervious: {},
+                current: {},
+            },
+            {
+                pervious: 1,
+                current: 1,
+            },
+            {
+                pervious: [],
+                current: [],
+            },
+            {
+                pervious: 'a',
+                current: 'a',
+            },
+            {
+                pervious: { test: 1 },
+                current: { test: 1 },
+            },
+            {
+                pervious: { test: { test: 1 } },
+                current: { test: { test: 1 } },
+            },
+            {
+                pervious: { test: { test: [1, 2, 3] } },
+                current: { test: { test: [1, 2, 3] } },
+            },
+            {
+                pervious: { test: { test: [1, { test: 1 }, 3] } },
+                current: { test: { test: [1, { test: 1 }, 3] } },
+            },
+            {
+                pervious: { test: { test: [1, { test: 1 }, { test: 3, test1: { test: 3 } }] } },
+                current: { test: { test: [1, { test: 1 }, { test: 3, test1: { test: 3 } }] } },
+            },
+        ];
+
+        data.forEach((item) => {
+            expect(reducerUtils.observeChanges(
+                item.pervious, item.current,
+            )).toMatchSnapshot();
+        });
+    });
+
+    it('observeChanges shoul NOT be the same - returns true', () => {
+        const data = [
+            // example of different data (true)
+            {
+                pervious: { test: 1 },
+                current: {},
+            },
+            {
+                pervious: [{}],
+                current: [],
+            },
+            {
+                pervious: 'a',
+                current: 'b',
+            },
+            {
+                pervious: 1,
+                current: '1',
+            },
+            {
+                pervious: { test: 1 },
+                current: { test: 2 },
+            },
+            {
+                pervious: { test: { test: 1 } },
+                current: { test: { test: 2 } },
+            },
+            {
+                pervious: { test: { test: [1, 2, 3] } },
+                current: { test: { test: [1, 1, 3] } },
+            },
+            {
+                pervious: { test: { test: [1, { test: 1 }, 3] } },
+                current: { test: { test: [1, { test: 2 }, 3] } },
+            },
+            {
+                pervious: { test: { test: [1, { test: 1 }, { test: 3, test1: { test: 3 } }] } },
+                current: { test: { test: [1, { test: 1 }, { test: 3, test1: { test: 1 } }] } },
+            },
+        ];
+
+        data.forEach((item) => {
+            expect(reducerUtils.observeChanges(
+                item.pervious, item.current,
+            )).toMatchSnapshot();
+        });
+    });
+});