3 files changed, 98 insertions, 0 deletions
diff --git a/test/main.js b/test/main.js
index d923aaa..3aeae69 100644
--- a/test/main.js
+++ b/test/main.js
@@ -1,2 +1,6 @@
 import chai from 'chai';
+const browserFake = require('webextensions-api-fake');
+const browser = browserFake();
+
 global.expect = chai.expect;
+global.browser = browser;
diff --git a/test/shared/versions/index.test.js b/test/shared/versions/index.test.js
new file mode 100644
index 0000000..3bb307a
--- /dev/null
+++ b/test/shared/versions/index.test.js
@@ -0,0 +1,55 @@
+import * as versions from 'shared/versions';
+import manifest from '../../../manifest.json';
+
+describe("shared/versions/storage", () => {
+  describe('#checkUpdated', () => {
+    beforeEach(() => {
+      return browser.storage.local.remove('version');
+    });
+
+    it('return true if no previous versions', () => {
+      return Promise.resolve().then(() => {
+        return versions.checkUpdated();
+      }).then((updated) => {
+        expect(updated).to.be.true;
+      });
+    });
+
+    it('return true if updated', () => {
+      return Promise.resolve().then(() => {
+        return browser.storage.local.set({ version: '0.001' });
+      }).then(() => {
+        return versions.checkUpdated();
+      }).then((updated) => {
+        expect(updated).to.be.true;
+      });
+    });
+
+    it('return false if not updated', () => {
+      return Promise.resolve().then(() => {
+        return browser.storage.local.set({ version: manifest.version });
+      }).then(() => {
+        return versions.checkUpdated();
+      }).then((updated) => {
+        expect(updated).to.be.false;
+      });
+    });
+  });
+
+  describe('#commit', () => {
+    beforeEach(() => {
+      return browser.storage.local.remove('version');
+    });
+
+    it('saves current version from manifest.json', () => {
+      return Promise.resolve().then(() => {
+        return versions.commit();
+      }).then(() => {
+        return browser.storage.local.get('version');
+      }).then(({version}) => {
+        expect(version).to.be.a('string');
+        expect(version).to.equal(manifest.version);
+      });
+    });
+  });
+});
diff --git a/test/shared/versions/storage.test.js b/test/shared/versions/storage.test.js
new file mode 100644
index 0000000..bcfa259
--- /dev/null
+++ b/test/shared/versions/storage.test.js
@@ -0,0 +1,39 @@
+import * as storage from 'shared/versions/storage';
+
+describe("shared/versions/storage", () => {
+  describe('#load', () => {
+    beforeEach(() => {
+      return browser.storage.local.remove('version');
+    });
+
+    it('loads saved version', () => {
+      return Promise.resolve().then(() => {
+        return browser.storage.local.set({ version: '1.2.3' });
+      }).then(() => {
+        return storage.load();
+      }).then((version) => {
+        expect(version).to.equal('1.2.3');
+      });
+    });
+
+    it('returns undefined if no versions in storage', () => {
+      return Promise.resolve().then(() => {
+        return storage.load();
+      }).then((version) => {
+        expect(version).to.be.a('undefined');
+      });
+    });
+  });
+
+  describe('#save', () => {
+    it('saves version string', () => {
+      return Promise.resolve().then(() => {
+        return storage.save('2.3.4');
+      }).then(() => {
+        return browser.storage.local.get('version');
+      }).then(({version}) => {
+        expect(version).to.equal('2.3.4');
+      });
+    });
+  });
+});