ADD test

storybookjs · Nov 21, 2019 · 2414287 · 2414287
1 parent df9a93a
commit 2414287
Showing 1 changed file with 66 additions and 18 deletions.
diff --git a/lib/core/src/server/presets.test.js b/lib/core/src/server/presets.test.js
@@ -19,11 +19,11 @@ jest.mock('@storybook/node-logger', () => ({
 
 describe('presets', () => {
   it('does not throw when there is no preset file', async () => {
-    const loadPresets = require.requireActual('./presets').default;
+    const getPresets = require.requireActual('./presets').default;
     let presets;
 
     async function testPresets() {
-      presets = wrapPreset(loadPresets());
+      presets = wrapPreset(getPresets());
       await presets.webpack();
       await presets.babel();
     }
@@ -34,8 +34,8 @@ describe('presets', () => {
   });
 
   it('does not throw when presets are empty', async () => {
-    const loadPresets = require.requireActual('./presets').default;
-    const presets = wrapPreset(loadPresets([]));
+    const getPresets = require.requireActual('./presets').default;
+    const presets = wrapPreset(getPresets([]));
 
     async function testPresets() {
       await presets.webpack();
@@ -46,8 +46,8 @@ describe('presets', () => {
   });
 
   it('does not throw when preset can not be loaded', async () => {
-    const loadPresets = require.requireActual('./presets').default;
-    const presets = wrapPreset(loadPresets(['preset-foo']));
+    const getPresets = require.requireActual('./presets').default;
+    const presets = wrapPreset(getPresets(['preset-foo']));
 
     async function testPresets() {
       await presets.webpack();
@@ -79,8 +79,8 @@ describe('presets', () => {
       foo: (exec, options) => exec.concat(`valar ${options.custom}`),
     });
 
-    const loadPresets = require.requireActual('./presets').default;
-    const presets = loadPresets(['preset-foo', 'preset-got', 'preset-bar']);
+    const getPresets = require.requireActual('./presets').default;
+    const presets = getPresets(['preset-foo', 'preset-got', 'preset-bar']);
 
     const result = await presets.apply('foo', []);
 
@@ -99,8 +99,8 @@ describe('presets', () => {
       babel: mockPresetBarExtendBabel,
     });
 
-    const loadPresets = require.requireActual('./presets').default;
-    const presets = wrapPreset(loadPresets(['preset-foo', 'preset-bar']));
+    const getPresets = require.requireActual('./presets').default;
+    const presets = wrapPreset(getPresets(['preset-foo', 'preset-bar']));
 
     async function testPresets() {
       await presets.webpack();
@@ -125,8 +125,8 @@ describe('presets', () => {
       babel: mockPresetBarExtendBabel,
     });
 
-    const loadPresets = require.requireActual('./presets').default;
-    const presets = wrapPreset(loadPresets([{ name: 'preset-foo' }, { name: 'preset-bar' }]));
+    const getPresets = require.requireActual('./presets').default;
+    const presets = wrapPreset(getPresets([{ name: 'preset-foo' }, { name: 'preset-bar' }]));
 
     async function testPresets() {
       await presets.webpack();
@@ -151,9 +151,9 @@ describe('presets', () => {
       babel: mockPresetBarExtendBabel,
     });
 
-    const loadPresets = require.requireActual('./presets').default;
+    const getPresets = require.requireActual('./presets').default;
     const presets = wrapPreset(
-      loadPresets([
+      getPresets([
         { name: 'preset-foo', options: { foo: 1 } },
         { name: 'preset-bar', options: { bar: 'a' } },
       ])
@@ -182,9 +182,9 @@ describe('presets', () => {
       babel: mockPresetBarExtendBabel,
     });
 
-    const loadPresets = require.requireActual('./presets').default;
+    const getPresets = require.requireActual('./presets').default;
     const presets = wrapPreset(
-      loadPresets(['preset-foo', { name: 'preset-bar', options: { bar: 'a' } }])
+      getPresets(['preset-foo', { name: 'preset-bar', options: { bar: 'a' } }])
     );
 
     async function testPresets() {
@@ -210,9 +210,9 @@ describe('presets', () => {
       webpack: mockPresetBarExtendWebpack,
     });
 
-    const loadPresets = require.requireActual('./presets').default;
+    const getPresets = require.requireActual('./presets').default;
     const presets = wrapPreset(
-      loadPresets(['preset-foo', { name: 'preset-bar', options: { bar: 'a' } }])
+      getPresets(['preset-foo', { name: 'preset-bar', options: { bar: 'a' } }])
     );
 
     async function testPresets() {
@@ -226,6 +226,54 @@ describe('presets', () => {
     expect(mockPresetBarExtendWebpack).toHaveBeenCalledWith(expect.anything(), { bar: 'a' });
   });
 
+  it('allows for presets to export presets array', async () => {
+    const getPresets = require.requireActual('./presets').default;
+    const input = {};
+    const mockPresetBar = jest.fn(() => input);
+
+    mockPreset('preset-foo', {
+      presets: ['preset-bar'],
+    });
+
+    mockPreset('preset-bar', {
+      bar: mockPresetBar,
+    });
+
+    const presets = getPresets(['preset-foo']);
+
+    const output = await presets.apply('bar');
+
+    expect(mockPresetBar).toHaveBeenCalledWith(undefined, expect.any(Object));
+
+    expect(input).toBe(output);
+  });
+
+  it('allows for presets to export presets fn', async () => {
+    const getPresets = require.requireActual('./presets').default;
+    const input = {};
+    const storybookOptions = { a: 1 };
+    const presetOptions = { b: 2 };
+    const mockPresetBar = jest.fn(() => input);
+    const mockPresetFoo = jest.fn(() => ['preset-bar']);
+
+    mockPreset('preset-foo', {
+      presets: mockPresetFoo,
+    });
+
+    mockPreset('preset-bar', {
+      bar: mockPresetBar,
+    });
+
+    const presets = getPresets([{ name: 'preset-foo', options: { b: 2 } }], storybookOptions);
+
+    const output = await presets.apply('bar');
+
+    expect(mockPresetFoo).toHaveBeenCalledWith({ ...storybookOptions, ...presetOptions });
+    expect(mockPresetBar).toHaveBeenCalledWith(undefined, expect.any(Object));
+
+    expect(input).toBe(output);
+  });
+
   afterEach(() => {
     jest.resetModules();
   });