test: implement tests for 100% coverage of store service

tests/main/services/store.spec.ts

@@ -5,7 +5,7 @@ import { expect } from 'chai';
 import fs from 'fs-extra';
 import 'mocha';
 import path from 'path';
-import { save, StoreKeys } from '../../../src/main/services/store';
+import { load, save, StoreKeys } from '../../../src/main/services/store';
 
 const storeDirectory = path.resolve('store');
 const storeBackupDirectory = path.resolve('store-backup');
@@ -16,7 +16,9 @@ describe('Store Service', function() {
   before(() => {
     rewiremock.enable();
     if (fs.existsSync(storeDirectory)) {
-      fs.removeSync(storeBackupDirectory);
+      if (fs.existsSync(storeBackupDirectory)) {
+        fs.removeSync(storeBackupDirectory);
+      }
       fs.moveSync(storeDirectory, storeBackupDirectory);
     }
   });
@@ -24,17 +26,77 @@ describe('Store Service', function() {
   after(() => {
     rewiremock.disable();
     if (fs.existsSync(storeBackupDirectory)) {
-      fs.removeSync(storeDirectory);
+      if (fs.existsSync(storeDirectory)) {
+        fs.removeSync(storeDirectory);
+      }
       fs.moveSync(storeBackupDirectory, storeDirectory);
     }
   });
 
-  it('creates a store directory', () => {
+  beforeEach(() => {
     if (fs.existsSync(storeDirectory)) {
       fs.removeSync(storeDirectory);
     }
+  });
+
+  it('creates a store directory', () => {
     return save(StoreKeys.COOKIES, { some: 'data' }).then(() => {
       expect(fs.existsSync(storeDirectory)).to.be.true;
     });
   });
+
+  it('loads saved data', () => {
+    const testData: any = {
+      something: 'gaga',
+      somethingElse: 0,
+      deepObject: {
+        somthingAsWell: true,
+        somethingNotInJson: undefined,
+        someArray: [
+          'hui',
+          {
+            g: 'h',
+          },
+        ],
+      },
+    };
+    const expectedJson = JSON.stringify(testData);
+    return save(StoreKeys.COOKIES, testData)
+      .then(() => {
+        return load(StoreKeys.COOKIES);
+      })
+      .then((data) => {
+        expect(JSON.stringify(data)).to.equal(expectedJson, 'store does not save and load data correctly');
+        return load(StoreKeys.COOKIES);
+      })
+      .then((data) => {
+        expect(JSON.stringify(data)).to.equal(expectedJson, 'store does load data correctly when loaded twice');
+      });
+  });
+
+  it('handles a deleted store directory', () => {
+    const testData = 'test_data';
+    return save(StoreKeys.COOKIES, testData)
+      .then(() => {
+        fs.removeSync(storeDirectory);
+        return load(StoreKeys.COOKIES);
+      })
+      .then((data) => {
+        expect(data).to.equal(testData, 'store does not load when store directory is deleted');
+      });
+  });
+
+  it('handles a deleted store file', () => {
+    const testData = 'test_data';
+    return save(StoreKeys.COOKIES, testData)
+      .then(() => {
+        fs.readdirSync(storeDirectory).forEach((file) => {
+          fs.unlinkSync(path.resolve(storeDirectory, file));
+        });
+        return load(StoreKeys.COOKIES);
+      })
+      .then((data) => {
+        expect(data).to.equal(testData, 'store does not load when store files are deleted');
+      });
+  });
 });