Cover actions with tests

As far actions are the core part of UI implementations it's essential
to be sure that they work correctly

Author: lotrien

package-lock.json

@@ -49,6 +49,7 @@
     "eslint-plugin-jsx-a11y": "^6.0.2",
     "eslint-plugin-react": "^7.4.0",
     "extract-text-webpack-plugin": "^3.0.2",
+    "fetch-mock": "^6.0.0-beta.2",
     "file-loader": "^1.1.5",
     "glob": "^7.1.2",
     "html-webpack-plugin": "^2.30.1",

package.json

@@ -0,0 +1,176 @@
+import fetchMock from 'fetch-mock';
+import createStore from '../src/store';
+
+import * as actions from '../src/actions';
+
+describe('actions', () => {
+  it('should create an action to set recent snippets', () => {
+    const snippets = [
+      {
+        id: 1,
+        content: 'test',
+        syntax: 'JavaScript',
+      },
+      {
+        id: 2,
+        content: 'batman',
+        syntax: 'Python',
+      },
+    ];
+    const store = createStore();
+    store.dispatch(actions.setRecentSnippets(snippets));
+
+    expect(store.getState().toJS()).toEqual({
+      recent: [1, 2],
+      snippets: {
+        1: {
+          id: 1,
+          content: 'test',
+          syntax: 'JavaScript',
+        },
+        2: {
+          id: 2,
+          content: 'batman',
+          syntax: 'Python',
+        },
+      },
+      syntaxes: [],
+    });
+  });
+
+  it('should create an action to fetch recent snippets', async () => {
+    const snippets = [
+      {
+        id: 1,
+        content: 'test',
+        syntax: 'JavaScript',
+      },
+      {
+        id: 2,
+        content: 'batman',
+        syntax: 'Python',
+      },
+    ];
+
+    fetchMock.getOnce('http://api.xsnippet.org/snippets', JSON.stringify(snippets));
+
+    const store = createStore();
+    await store.dispatch(actions.fetchRecentSnippets);
+
+    expect(store.getState().toJS()).toEqual({
+      recent: [1, 2],
+      snippets: {
+        1: {
+          id: 1,
+          content: 'test',
+          syntax: 'JavaScript',
+        },
+        2: {
+          id: 2,
+          content: 'batman',
+          syntax: 'Python',
+        },
+      },
+      syntaxes: [],
+    });
+  });
+
+  it('should create an action to set snippet', () => {
+    const snippet = {
+      id: 3,
+      content: 'not batman',
+      syntax: 'Go',
+    };
+    const store = createStore();
+    store.dispatch(actions.setSnippet(snippet));
+
+    expect(store.getState().toJS()).toEqual({
+      recent: [],
+      snippets: {
+        3: {
+          id: 3,
+          content: 'not batman',
+          syntax: 'Go',
+        },
+      },
+      syntaxes: [],
+    });
+  });
+
+  it('should create an action to fetch snippet', async () => {
+    const snippet = {
+      id: 3,
+      content: 'not batman',
+      syntax: 'Go',
+    };
+
+    fetchMock.getOnce(`http://api.xsnippet.org/snippets/${snippet.id}`, JSON.stringify(snippet));
+
+    const store = createStore();
+    await store.dispatch(actions.fetchSnippet(snippet.id));
+
+    expect(store.getState().toJS()).toEqual({
+      recent: [],
+      snippets: {
+        3: {
+          id: 3,
+          content: 'not batman',
+          syntax: 'Go',
+        },
+      },
+      syntaxes: [],
+    });
+  });
+
+  it('should create an action to set syntaxes', () => {
+    const syntaxes = ['JavaScript', 'Python', 'Java', 'Go', 'Plain Text'];
+    const store = createStore();
+    store.dispatch(actions.setSyntaxes(syntaxes));
+
+    expect(store.getState().toJS()).toEqual({
+      recent: [],
+      snippets: {},
+      syntaxes,
+    });
+  });
+
+  it('should create an action to fetch syntaxes', async () => {
+    const syntaxes = ['JavaScript', 'Python', 'Java', 'Go', 'Plain Text'];
+
+    fetchMock.getOnce('http://api.xsnippet.org/syntaxes', JSON.stringify(syntaxes));
+
+    const store = createStore();
+    await store.dispatch(actions.fetchSyntaxes);
+
+    expect(store.getState().toJS()).toEqual({
+      recent: [],
+      snippets: {},
+      syntaxes,
+    });
+  });
+
+  it('should create an action to post snippet', async () => {
+    const snippet = {
+      id: 4,
+      content: 'Batman',
+      syntax: 'JavaScript',
+    };
+
+    fetchMock.postOnce('http://api.xsnippet.org/snippets', JSON.stringify(snippet));
+
+    const store = createStore();
+    await store.dispatch(actions.postSnippet(snippet, () => {}));
+
+    expect(store.getState().toJS()).toEqual({
+      recent: [],
+      snippets: {
+        4: {
+          id: 4,
+          content: 'Batman',
+          syntax: 'JavaScript',
+        },
+      },
+      syntaxes: [],
+    });
+  });
+});