1 files changed, 134 insertions, 0 deletions
diff --git a/spec/javascripts/autosave_spec.js b/spec/javascripts/autosave_spec.js
new file mode 100644
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+++ b/spec/javascripts/autosave_spec.js
@@ -0,0 +1,134 @@
+import Autosave from '~/autosave';
+import AccessorUtilities from '~/lib/utils/accessor';
+
+describe('Autosave', () => {
+  let autosave;
+
+  describe('class constructor', () => {
+    const key = 'key';
+    const field = jasmine.createSpyObj('field', ['data', 'on']);
+
+    beforeEach(() => {
+      spyOn(AccessorUtilities, 'isLocalStorageAccessSafe').and.returnValue(true);
+      spyOn(Autosave.prototype, 'restore');
+
+      autosave = new Autosave(field, key);
+    });
+
+    it('should set .isLocalStorageAvailable', () => {
+      expect(AccessorUtilities.isLocalStorageAccessSafe).toHaveBeenCalled();
+      expect(autosave.isLocalStorageAvailable).toBe(true);
+    });
+  });
+
+  describe('restore', () => {
+    const key = 'key';
+    const field = jasmine.createSpyObj('field', ['trigger']);
+
+    beforeEach(() => {
+      autosave = {
+        field,
+        key,
+      };
+
+      spyOn(window.localStorage, 'getItem');
+    });
+
+    describe('if .isLocalStorageAvailable is `false`', () => {
+      beforeEach(() => {
+        autosave.isLocalStorageAvailable = false;
+
+        Autosave.prototype.restore.call(autosave);
+      });
+
+      it('should not call .getItem', () => {
+        expect(window.localStorage.getItem).not.toHaveBeenCalled();
+      });
+    });
+
+    describe('if .isLocalStorageAvailable is `true`', () => {
+      beforeEach(() => {
+        autosave.isLocalStorageAvailable = true;
+
+        Autosave.prototype.restore.call(autosave);
+      });
+
+      it('should call .getItem', () => {
+        expect(window.localStorage.getItem).toHaveBeenCalledWith(key);
+      });
+    });
+  });
+
+  describe('save', () => {
+    const field = jasmine.createSpyObj('field', ['val']);
+
+    beforeEach(() => {
+      autosave = jasmine.createSpyObj('autosave', ['reset']);
+      autosave.field = field;
+
+      field.val.and.returnValue('value');
+
+      spyOn(window.localStorage, 'setItem');
+    });
+
+    describe('if .isLocalStorageAvailable is `false`', () => {
+      beforeEach(() => {
+        autosave.isLocalStorageAvailable = false;
+
+        Autosave.prototype.save.call(autosave);
+      });
+
+      it('should not call .setItem', () => {
+        expect(window.localStorage.setItem).not.toHaveBeenCalled();
+      });
+    });
+
+    describe('if .isLocalStorageAvailable is `true`', () => {
+      beforeEach(() => {
+        autosave.isLocalStorageAvailable = true;
+
+        Autosave.prototype.save.call(autosave);
+      });
+
+      it('should call .setItem', () => {
+        expect(window.localStorage.setItem).toHaveBeenCalled();
+      });
+    });
+  });
+
+  describe('reset', () => {
+    const key = 'key';
+
+    beforeEach(() => {
+      autosave = {
+        key,
+      };
+
+      spyOn(window.localStorage, 'removeItem');
+    });
+
+    describe('if .isLocalStorageAvailable is `false`', () => {
+      beforeEach(() => {
+        autosave.isLocalStorageAvailable = false;
+
+        Autosave.prototype.reset.call(autosave);
+      });
+
+      it('should not call .removeItem', () => {
+        expect(window.localStorage.removeItem).not.toHaveBeenCalled();
+      });
+    });
+
+    describe('if .isLocalStorageAvailable is `true`', () => {
+      beforeEach(() => {
+        autosave.isLocalStorageAvailable = true;
+
+        Autosave.prototype.reset.call(autosave);
+      });
+
+      it('should call .removeItem', () => {
+        expect(window.localStorage.removeItem).toHaveBeenCalledWith(key);
+      });
+    });
+  });
+});