Contracts interface expansion (#4307)

* Add lookupMeta & tests

* Add getEntry & tests

* Formatting

* Remove unneeded .then(console.log)

js/src/contracts/githubhint.spec.js

@@ -0,0 +1,66 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import sinon from 'sinon';
+
+import GithubHint from './githubhint';
+
+let githubHint;
+let instance;
+let registry;
+
+function create () {
+  instance = {
+    __id: 'testInstance',
+    entries: {
+      call: sinon.stub().resolves('testValue')
+    }
+  };
+  registry = {
+    getContract: sinon.stub().resolves({ instance })
+  };
+  githubHint = new GithubHint({}, registry);
+
+  return githubHint;
+}
+
+describe('contracts/GithubHint', () => {
+  beforeEach(() => {
+    create();
+
+    return githubHint.getInstance();
+  });
+
+  it('instantiates successfully', () => {
+    expect(githubHint).to.be.ok;
+  });
+
+  it('attaches the instance on create', () => {
+    expect(githubHint._instance.__id).to.equal('testInstance');
+  });
+
+  describe('interface', () => {
+    describe('getEntry', () => {
+      beforeEach(() => {
+        return githubHint.getEntry('testId');
+      });
+
+      it('calls entries on the instance', () => {
+        expect(instance.entries.call).to.have.been.calledWith({}, ['testId']);
+      });
+    });
+  });
+});