From 67dc36c757321e2f5f467cd9002aac8d096dda39 Mon Sep 17 00:00:00 2001
From: Artur Mizera <arturmiz@users.noreply.github.com>
Date: Mon, 4 Jun 2018 22:43:43 +0200
Subject: [PATCH] test: general and single component installation covered (#8)

* test: single component installation

* test: general installation
---
 __tests__/Vuent.test.js    | 59 ++++++++++++++++++++++++++++++++++++++
 __tests__/button.test.js   | 20 +++++++++----
 __tests__/checkbox.test.js | 26 +++++++++++------
 __tests__/header.test.js   | 22 +++++++++-----
 __tests__/input.test.js    | 26 +++++++++++------
 __tests__/link.test.js     | 22 +++++++++-----
 __tests__/radio.test.js    | 28 +++++++++++-------
 __tests__/select.test.js   | 24 ++++++++++------
 __tests__/slider.test.js   | 30 ++++++++++++-------
 __tests__/toggle.test.js   | 30 ++++++++++++-------
 __tests__/utils.js         | 10 +++++++
 jest.config.json           |  3 ++
 12 files changed, 222 insertions(+), 78 deletions(-)
 create mode 100644 __tests__/Vuent.test.js
 create mode 100644 __tests__/utils.js

diff --git a/__tests__/Vuent.test.js b/__tests__/Vuent.test.js
new file mode 100644
index 0000000..0f16251
--- /dev/null
+++ b/__tests__/Vuent.test.js
@@ -0,0 +1,59 @@
+import { createLocalVue } from '@vue/test-utils';
+import { isInstalled, countInstalledPlugins } from './utils';
+
+import {
+  VntButton,
+  VntCheckbox,
+  VntHeader,
+  VntInput,
+  VntLink,
+  VntRadio,
+  VntSelect,
+  VntSlider,
+  VntToggle
+} from '@/components';
+
+import Vuent from '@/';
+
+describe('Vuent', () => {
+  let localVue;
+
+  beforeEach(() => {
+    localVue = createLocalVue();
+  });
+
+  describe('by default', () => {
+
+    beforeEach(() => {
+      localVue.use(Vuent);
+    });
+
+    test('installs all components', () => {
+      expect(isInstalled(localVue, VntButton)).toBe(true);
+      expect(isInstalled(localVue, VntCheckbox)).toBe(true);
+      expect(isInstalled(localVue, VntHeader)).toBe(true);
+      expect(isInstalled(localVue, VntInput)).toBe(true);
+      expect(isInstalled(localVue, VntLink)).toBe(true);
+      expect(isInstalled(localVue, VntRadio)).toBe(true);
+      expect(isInstalled(localVue, VntSelect)).toBe(true);
+      expect(isInstalled(localVue, VntSlider)).toBe(true);
+      expect(isInstalled(localVue, VntToggle)).toBe(true);
+      expect(countInstalledPlugins(localVue)).toBe(9);
+    });
+
+  });
+
+  describe('when custom configured', () => {
+
+    test('installs only given components', () => {
+      Vuent.install(localVue, {
+        components: [VntButton, VntLink]
+      });
+      expect(isInstalled(localVue, VntButton)).toBe(true);
+      expect(isInstalled(localVue, VntLink)).toBe(true);
+      expect(countInstalledPlugins(localVue)).toBe(2);
+    });
+
+  });
+
+});
diff --git a/__tests__/button.test.js b/__tests__/button.test.js
index fd1212a..59fe695 100644
--- a/__tests__/button.test.js
+++ b/__tests__/button.test.js
@@ -1,13 +1,21 @@
-import { mount } from '@vue/test-utils';
-import Button from '@/components/button';
+import { createLocalVue, mount } from '@vue/test-utils';
+import { VntButton } from '@/components';
+import { isInstalled } from './utils';
 
 describe('Button', () => {
   let wrapper;
 
+  test('can be installed separately', () => {
+    const localVue = createLocalVue();
+    localVue.use(VntButton);
+
+    expect(isInstalled(localVue, VntButton)).toBe(true);
+  });
+
   describe('by default', () => {
 
     beforeAll(() => {
-      wrapper = mount(Button);
+      wrapper = mount(VntButton);
     });
 
     test('has correct type', () => {
@@ -31,7 +39,7 @@ describe('Button', () => {
   describe('can be disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(Button, {
+      wrapper = mount(VntButton, {
         propsData: {
           disabled: true
         }
@@ -49,7 +57,7 @@ describe('Button', () => {
   });
 
   test('can have content set using slot', () => {
-    wrapper = mount(Button, {
+    wrapper = mount(VntButton, {
       slots: {
         default: '<span>Custom content</span>'
       }
@@ -59,7 +67,7 @@ describe('Button', () => {
 
   test('when clicked invokes passed handler', () => {
     const mockClick = jest.fn();
-    wrapper = mount(Button, {
+    wrapper = mount(VntButton, {
       propsData: {
         click: mockClick
       }
diff --git a/__tests__/checkbox.test.js b/__tests__/checkbox.test.js
index 2a55221..8280f1a 100644
--- a/__tests__/checkbox.test.js
+++ b/__tests__/checkbox.test.js
@@ -1,13 +1,21 @@
-import { mount } from '@vue/test-utils';
-import Checkbox from '@/components/checkbox';
+import { createLocalVue, mount } from '@vue/test-utils';
+import { VntCheckbox } from '@/components';
+import { isInstalled } from './utils';
 
 describe('Checkbox', () => {
   let wrapper;
 
+  test('can be installed separately', () => {
+    const localVue = createLocalVue();
+    localVue.use(VntCheckbox);
+
+    expect(isInstalled(localVue, VntCheckbox)).toBe(true);
+  });
+
   describe('by default', () => {
 
     beforeAll(() => {
-      wrapper = mount(Checkbox);
+      wrapper = mount(VntCheckbox);
     });
 
     test('is not disabled', () => {
@@ -31,7 +39,7 @@ describe('Checkbox', () => {
   describe('can be disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(Checkbox, {
+      wrapper = mount(VntCheckbox, {
         propsData: {
           disabled: true
         }
@@ -51,7 +59,7 @@ describe('Checkbox', () => {
   describe('can be checked', () => {
 
     beforeAll(() => {
-      wrapper = mount(Checkbox, {
+      wrapper = mount(VntCheckbox, {
         propsData: {
           checked: true
         }
@@ -71,7 +79,7 @@ describe('Checkbox', () => {
   describe('can be checked and disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(Checkbox, {
+      wrapper = mount(VntCheckbox, {
         propsData: {
           checked: true,
           disabled: true
@@ -94,7 +102,7 @@ describe('Checkbox', () => {
   });
 
   test('can have content set using slot', () => {
-    wrapper = mount(Checkbox, {
+    wrapper = mount(VntCheckbox, {
       slots: {
         default: '<span>Custom content</span>'
       }
@@ -105,7 +113,7 @@ describe('Checkbox', () => {
   describe('when not disabled, updates passed checked prop', () => {
 
     beforeAll(() => {
-      wrapper = mount(Checkbox, {
+      wrapper = mount(VntCheckbox, {
         propsData: {
           checked: false
         }
@@ -129,7 +137,7 @@ describe('Checkbox', () => {
   describe('when disabled, doesn\'t change state', () => {
 
     beforeAll(() => {
-      wrapper = mount(Checkbox, {
+      wrapper = mount(VntCheckbox, {
         propsData: {
           checked: false,
           disabled: true
diff --git a/__tests__/header.test.js b/__tests__/header.test.js
index 3ea66a3..f1470d8 100644
--- a/__tests__/header.test.js
+++ b/__tests__/header.test.js
@@ -1,13 +1,21 @@
-import { mount } from '@vue/test-utils';
-import Header from '@/components/header';
+import { createLocalVue, mount } from '@vue/test-utils';
+import { VntHeader } from '@/components';
+import { isInstalled } from './utils';
 
 describe('Header', () => {
   let wrapper;
 
+  test('can be installed separately', () => {
+    const localVue = createLocalVue();
+    localVue.use(VntHeader);
+
+    expect(isInstalled(localVue, VntHeader)).toBe(true);
+  });
+
   describe('by default', () => {
 
     beforeAll(() => {
-      wrapper = mount(Header);
+      wrapper = mount(VntHeader);
     });
 
     test('renders correctly', () => {
@@ -17,7 +25,7 @@ describe('Header', () => {
   });
 
   test('can have only main header content set', () => {
-    wrapper = mount(Header, {
+    wrapper = mount(VntHeader, {
       slots: {
         default: 'Header'
       }
@@ -26,7 +34,7 @@ describe('Header', () => {
   });
 
   test('can have main header content set using named slot', () => {
-    wrapper = mount(Header, {
+    wrapper = mount(VntHeader, {
       slots: {
         header: 'Header'
       }
@@ -35,7 +43,7 @@ describe('Header', () => {
   });
 
   test('can have both header and subheader content set', () => {
-    wrapper = mount(Header, {
+    wrapper = mount(VntHeader, {
       slots: {
         header: 'Header',
         subheader: 'Subheader'
@@ -45,7 +53,7 @@ describe('Header', () => {
   });
 
   test('can have only subheader content set', () => {
-    wrapper = mount(Header, {
+    wrapper = mount(VntHeader, {
       slots: {
         subheader: 'Subheader'
       }
diff --git a/__tests__/input.test.js b/__tests__/input.test.js
index 6946b89..48dddd3 100644
--- a/__tests__/input.test.js
+++ b/__tests__/input.test.js
@@ -1,13 +1,21 @@
-import { mount } from '@vue/test-utils';
-import Input from '@/components/input';
+import { createLocalVue, mount } from '@vue/test-utils';
+import { VntInput } from '@/components';
+import { isInstalled } from './utils';
 
 describe('Input', () => {
   let wrapper;
 
+  test('can be installed separately', () => {
+    const localVue = createLocalVue();
+    localVue.use(VntInput);
+
+    expect(isInstalled(localVue, VntInput)).toBe(true);
+  });
+
   describe('by default', () => {
 
     beforeAll(() => {
-      wrapper = mount(Input);
+      wrapper = mount(VntInput);
     });
 
     test('has correct type', () => {
@@ -39,7 +47,7 @@ describe('Input', () => {
   describe('can be disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(Input, {
+      wrapper = mount(VntInput, {
         propsData: {
           disabled: true
         }
@@ -59,7 +67,7 @@ describe('Input', () => {
   describe('can have a custom label', () => {
 
     beforeAll(() => {
-      wrapper = mount(Input, {
+      wrapper = mount(VntInput, {
         propsData: {
           label: 'Custom label'
         }
@@ -79,7 +87,7 @@ describe('Input', () => {
   describe('can be a password field', () => {
 
     beforeAll(() => {
-      wrapper = mount(Input, {
+      wrapper = mount(VntInput, {
         propsData: {
           type: 'password'
         }
@@ -99,7 +107,7 @@ describe('Input', () => {
   describe('can have a custom placeholder', () => {
 
     beforeAll(() => {
-      wrapper = mount(Input, {
+      wrapper = mount(VntInput, {
         propsData: {
           placeholder: 'Custom hint'
         }
@@ -119,7 +127,7 @@ describe('Input', () => {
   describe('can be fully customized', () => {
 
     beforeAll(() => {
-      wrapper = mount(Input, {
+      wrapper = mount(VntInput, {
         propsData: {
           type: 'number',
           label: 'Custom label',
@@ -138,7 +146,7 @@ describe('Input', () => {
   describe('updates passed value', () => {
 
     beforeAll(() => {
-      wrapper = mount(Input, {
+      wrapper = mount(VntInput, {
         propsData: {
           value: '12345'
         }
diff --git a/__tests__/link.test.js b/__tests__/link.test.js
index de6e63c..2b42e98 100644
--- a/__tests__/link.test.js
+++ b/__tests__/link.test.js
@@ -1,13 +1,21 @@
-import { mount } from '@vue/test-utils';
-import Link from '@/components/link';
+import { createLocalVue, mount } from '@vue/test-utils';
+import { VntLink } from '@/components';
+import { isInstalled } from './utils';
 
 describe('Link', () => {
   let wrapper;
 
+  test('can be installed separately', () => {
+    const localVue = createLocalVue();
+    localVue.use(VntLink);
+
+    expect(isInstalled(localVue, VntLink)).toBe(true);
+  });
+
   describe('by default', () => {
 
     beforeAll(() => {
-      wrapper = mount(Link);
+      wrapper = mount(VntLink);
     });
 
     test('renders correctly', () => {
@@ -27,7 +35,7 @@ describe('Link', () => {
   describe('can be disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(Link, {
+      wrapper = mount(VntLink, {
         propsData: {
           disabled: true
         }
@@ -47,7 +55,7 @@ describe('Link', () => {
   describe('can set target', () => {
 
     beforeAll(() => {
-      wrapper = mount(Link, {
+      wrapper = mount(VntLink, {
         propsData: {
           href: 'http://fluent.microsoft.com'
         }
@@ -67,7 +75,7 @@ describe('Link', () => {
   describe('can create proper link', () => {
 
     beforeAll(() => {
-      wrapper = mount(Link, {
+      wrapper = mount(VntLink, {
         propsData: {
           href: 'http://fluent.microsoft.com'
         },
@@ -86,7 +94,7 @@ describe('Link', () => {
   describe('when passed other standard href attributes', () => {
 
     test('passes correctly target attr', () => {
-      wrapper = mount(Link, {
+      wrapper = mount(VntLink, {
         propsData: {
           href: 'http://fluent.microsoft.com'
         },
diff --git a/__tests__/radio.test.js b/__tests__/radio.test.js
index eddc4c1..ceabb4c 100644
--- a/__tests__/radio.test.js
+++ b/__tests__/radio.test.js
@@ -1,13 +1,21 @@
-import { mount } from '@vue/test-utils';
-import RadioButton from '@/components/radio';
+import { createLocalVue, mount } from '@vue/test-utils';
+import { VntRadio } from '@/components';
+import { isInstalled } from './utils';
 
 describe('RadioButton', () => {
   let wrapper;
 
+  test('can be installed separately', () => {
+    const localVue = createLocalVue();
+    localVue.use(VntRadio);
+
+    expect(isInstalled(localVue, VntRadio)).toBe(true);
+  });
+
   describe('by default', () => {
 
     beforeAll(() => {
-      wrapper = mount(RadioButton);
+      wrapper = mount(VntRadio);
     });
 
     test('is not disabled', () => {
@@ -35,7 +43,7 @@ describe('RadioButton', () => {
   describe('can be disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(RadioButton, {
+      wrapper = mount(VntRadio, {
         propsData: {
           disabled: true
         }
@@ -55,7 +63,7 @@ describe('RadioButton', () => {
   describe('can be checked', () => {
 
     beforeAll(() => {
-      wrapper = mount(RadioButton, {
+      wrapper = mount(VntRadio, {
         attrs: {
           checked: 'true'
         }
@@ -71,7 +79,7 @@ describe('RadioButton', () => {
   describe('can be checked and disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(RadioButton, {
+      wrapper = mount(VntRadio, {
         attrs: {
           checked: 'true'
         },
@@ -92,7 +100,7 @@ describe('RadioButton', () => {
   });
 
   test('can have content set using slot', () => {
-    wrapper = mount(RadioButton, {
+    wrapper = mount(VntRadio, {
       slots: {
         default: '<span>Custom content</span>'
       }
@@ -103,7 +111,7 @@ describe('RadioButton', () => {
   describe('can have name attribute', () => {
 
     beforeAll(() => {
-      wrapper = mount(RadioButton, {
+      wrapper = mount(VntRadio, {
         propsData: {
           name: 'groupedRadios'
         }
@@ -123,7 +131,7 @@ describe('RadioButton', () => {
   describe('when not disabled, emits selected value', () => {
 
     beforeAll(() => {
-      wrapper = mount(RadioButton, {
+      wrapper = mount(VntRadio, {
         attrs: {
           value: 'red'
         },
@@ -149,7 +157,7 @@ describe('RadioButton', () => {
   describe('when disabled, doesn\'t emit selected value', () => {
 
     beforeAll(() => {
-      wrapper = mount(RadioButton, {
+      wrapper = mount(VntRadio, {
         attrs: {
           value: 'blue'
         },
diff --git a/__tests__/select.test.js b/__tests__/select.test.js
index c9d0d38..bbda3bf 100644
--- a/__tests__/select.test.js
+++ b/__tests__/select.test.js
@@ -1,13 +1,21 @@
-import { mount } from '@vue/test-utils';
-import Select from '@/components/select';
+import { createLocalVue, mount } from '@vue/test-utils';
+import { VntSelect } from '@/components';
+import { isInstalled } from './utils';
 
 describe('Select', () => {
   let wrapper;
 
+  test('can be installed separately', () => {
+    const localVue = createLocalVue();
+    localVue.use(VntSelect);
+
+    expect(isInstalled(localVue, VntSelect)).toBe(true);
+  });
+
   describe('by default', () => {
 
     beforeAll(() => {
-      wrapper = mount(Select);
+      wrapper = mount(VntSelect);
     });
 
     test('is not disabled', () => {
@@ -35,7 +43,7 @@ describe('Select', () => {
   describe('can be disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(Select, {
+      wrapper = mount(VntSelect, {
         propsData: {
           disabled: true,
           options: [
@@ -89,7 +97,7 @@ describe('Select', () => {
   describe('allows to select a new value', () => {
 
     beforeAll(() => {
-      wrapper = mount(Select, {
+      wrapper = mount(VntSelect, {
         propsData: {
           options: [
             { value: 1, label: 'List item 1'},
@@ -134,7 +142,7 @@ describe('Select', () => {
   describe('can have custom label', () => {
 
     beforeAll(() => {
-      wrapper = mount(Select, {
+      wrapper = mount(VntSelect, {
         propsData: {
           label: 'Custom Select'
         }
@@ -154,7 +162,7 @@ describe('Select', () => {
   describe('can have custom optionText', () => {
 
     beforeAll(() => {
-      wrapper = mount(Select, {
+      wrapper = mount(VntSelect, {
         propsData: {
           optionText: 'text',
           options: [
@@ -174,7 +182,7 @@ describe('Select', () => {
   describe('can have custom optionValue', () => {
 
     beforeAll(() => {
-      wrapper = mount(Select, {
+      wrapper = mount(VntSelect, {
         propsData: {
           optionValue: 'id',
           options: [
diff --git a/__tests__/slider.test.js b/__tests__/slider.test.js
index d624728..760f795 100644
--- a/__tests__/slider.test.js
+++ b/__tests__/slider.test.js
@@ -1,13 +1,21 @@
-import { mount } from '@vue/test-utils';
-import Slider from '@/components/slider';
+import { createLocalVue, mount } from '@vue/test-utils';
+import { VntSlider } from '@/components';
+import { isInstalled } from './utils';
 
 describe('Slider', () => {
   let wrapper;
 
+  test('can be installed separately', () => {
+    const localVue = createLocalVue();
+    localVue.use(VntSlider);
+
+    expect(isInstalled(localVue, VntSlider)).toBe(true);
+  });
+
   describe('by default', () => {
 
     beforeAll(() => {
-      wrapper = mount(Slider);
+      wrapper = mount(VntSlider);
     });
 
     test('is not disabled', () => {
@@ -39,7 +47,7 @@ describe('Slider', () => {
   describe('can be disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(Slider, {
+      wrapper = mount(VntSlider, {
         propsData: {
           disabled: true
         }
@@ -59,7 +67,7 @@ describe('Slider', () => {
   describe('can have custom label', () => {
 
     beforeAll(() => {
-      wrapper = mount(Slider, {
+      wrapper = mount(VntSlider, {
         propsData: {
           label: 'Custom Slider'
         }
@@ -79,7 +87,7 @@ describe('Slider', () => {
   describe('can have custom min', () => {
 
     beforeAll(() => {
-      wrapper = mount(Slider, {
+      wrapper = mount(VntSlider, {
         propsData: {
           min: 15
         }
@@ -99,7 +107,7 @@ describe('Slider', () => {
   describe('can have custom max', () => {
 
     beforeAll(() => {
-      wrapper = mount(Slider, {
+      wrapper = mount(VntSlider, {
         propsData: {
           max: 200
         }
@@ -117,7 +125,7 @@ describe('Slider', () => {
   });
 
   test('can have some other attribute set', () => {
-    wrapper = mount(Slider, {
+    wrapper = mount(VntSlider, {
       attrs: {
         step: '5',
         'aria-label': 'a11y label'
@@ -127,7 +135,7 @@ describe('Slider', () => {
   });
 
   test('can have content set using slot', () => {
-    wrapper = mount(Slider, {
+    wrapper = mount(VntSlider, {
       slots: {
         default: '<span>Custom content</span>'
       }
@@ -138,7 +146,7 @@ describe('Slider', () => {
   describe('when not disabled, updates passed value prop', () => {
 
     beforeAll(() => {
-      wrapper = mount(Slider, {
+      wrapper = mount(VntSlider, {
         propsData: {
           value: 30
         }
@@ -162,7 +170,7 @@ describe('Slider', () => {
   describe('when disabled, doesn\'t change state', () => {
 
     beforeAll(() => {
-      wrapper = mount(Slider, {
+      wrapper = mount(VntSlider, {
         propsData: {
           value: 3,
           disabled: true
diff --git a/__tests__/toggle.test.js b/__tests__/toggle.test.js
index 56bf3fc..e1fa476 100644
--- a/__tests__/toggle.test.js
+++ b/__tests__/toggle.test.js
@@ -1,13 +1,21 @@
-import { mount } from '@vue/test-utils';
-import Toggle from '@/components/toggle';
+import { createLocalVue, mount } from '@vue/test-utils';
+import { VntToggle } from '@/components';
+import { isInstalled } from './utils';
 
 describe('Toggle', () => {
   let wrapper;
 
+  test('can be installed separately', () => {
+    const localVue = createLocalVue();
+    localVue.use(VntToggle);
+
+    expect(isInstalled(localVue, VntToggle)).toBe(true);
+  });
+
   describe('by default', () => {
 
     beforeAll(() => {
-      wrapper = mount(Toggle);
+      wrapper = mount(VntToggle);
     });
 
     test('is not disabled', () => {
@@ -39,7 +47,7 @@ describe('Toggle', () => {
   describe('can be disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(Toggle, {
+      wrapper = mount(VntToggle, {
         propsData: {
           disabled: true
         }
@@ -59,7 +67,7 @@ describe('Toggle', () => {
   describe('can be checked', () => {
 
     beforeAll(() => {
-      wrapper = mount(Toggle, {
+      wrapper = mount(VntToggle, {
         propsData: {
           checked: true
         }
@@ -79,7 +87,7 @@ describe('Toggle', () => {
   describe('can have custom "Off" state label', () => {
 
     beforeAll(() => {
-      wrapper = mount(Toggle, {
+      wrapper = mount(VntToggle, {
         propsData: {
           labelOff: 'Custom Off'
         }
@@ -100,7 +108,7 @@ describe('Toggle', () => {
   describe('can have custom "On" state label', () => {
 
     beforeAll(() => {
-      wrapper = mount(Toggle, {
+      wrapper = mount(VntToggle, {
         propsData: {
           labelOn: 'Custom On'
         }
@@ -120,7 +128,7 @@ describe('Toggle', () => {
   describe('can be checked and disabled', () => {
 
     beforeAll(() => {
-      wrapper = mount(Toggle, {
+      wrapper = mount(VntToggle, {
         propsData: {
           checked: true,
           disabled: true
@@ -143,7 +151,7 @@ describe('Toggle', () => {
   });
 
   test('can have content set using slot', () => {
-    wrapper = mount(Toggle, {
+    wrapper = mount(VntToggle, {
       slots: {
         default: '<span>Custom content</span>'
       }
@@ -154,7 +162,7 @@ describe('Toggle', () => {
   describe('when not disabled, updates passed checked prop', () => {
 
     beforeAll(() => {
-      wrapper = mount(Toggle, {
+      wrapper = mount(VntToggle, {
         propsData: {
           checked: false
         }
@@ -178,7 +186,7 @@ describe('Toggle', () => {
   describe('when disabled, doesn\'t change state', () => {
 
     beforeAll(() => {
-      wrapper = mount(Toggle, {
+      wrapper = mount(VntToggle, {
         propsData: {
           checked: false,
           disabled: true
diff --git a/__tests__/utils.js b/__tests__/utils.js
new file mode 100644
index 0000000..f65165f
--- /dev/null
+++ b/__tests__/utils.js
@@ -0,0 +1,10 @@
+export function isInstalled(localVue, plugin) {
+  return !!localVue._installedPlugins
+    .find(installedPlugin => installedPlugin.name === plugin.name);
+}
+
+export function countInstalledPlugins(localVue) {
+  return localVue._installedPlugins
+    .filter(installedPlugin => !!installedPlugin.name).length;
+
+}
diff --git a/jest.config.json b/jest.config.json
index 20b7659..7a75c27 100644
--- a/jest.config.json
+++ b/jest.config.json
@@ -13,6 +13,9 @@
   "snapshotSerializers": [
     "<rootDir>/node_modules/jest-serializer-vue"
   ],
+  "testMatch": [
+    "**/__tests__/**/(*.)+(spec|test).js"
+  ],
   "transform": {
       "^.+\\.js$": "<rootDir>/node_modules/babel-jest",
       ".*\\.(vue)$": "<rootDir>/node_modules/vue-jest"