Add more tests for extension

.vscodeignore

@@ -8,3 +8,5 @@ scripts/**
 .gitignore
 tsconfig.json
 tslint.json
+.editorconfig
+.travis.yml

test/extension.test.ts

@@ -9,13 +9,30 @@ import * as assert from 'assert';
 // You can import and use all API from the 'vscode' module
 // as well as import your extension to test it
 import * as vscode from 'vscode';
-import * as myExtension from '../src/extension';
-
-// Defines a Mocha test suite to group tests of similar kind together
-suite('Extension Tests', () => {
-    // Defines a Mocha unit test
-    test('Something 1', () => {
-        assert.equal(-1, [1, 2, 3].indexOf(5));
-        assert.equal(-1, [1, 2, 3].indexOf(0));
+
+
+suite('Shellcheck extension', () => {
+    const ext = vscode.extensions.getExtension('timonwong.shellcheck');
+
+    test('Extension should not be activated', async () => {
+        const plaintextDocument = await vscode.workspace.openTextDocument({
+            content: 'hello',
+            language: 'plaintext',
+        });
+
+        await vscode.window.showTextDocument(plaintextDocument);
+
+        assert.equal(ext.isActive, false, 'should not be activated when file type is not shell script.');
+    });
+
+    test('Extension should be activated on shell script files', async () => {
+        const shellscriptDocument = await vscode.workspace.openTextDocument({
+            content: '#!/bin/bash\n',
+            language: 'shellscript',
+        });
+
+        await vscode.window.showTextDocument(shellscriptDocument);
+
+        assert.equal(ext.isActive, true, 'should be activated when file type is shellscript.');
     });
 });