add test for --version and -V flags

Author: Jake Champion

integration-tests/cli/version.test.js

@@ -0,0 +1,29 @@
+import test from 'brittle';
+import { getBinPath } from 'get-bin-path'
+import { prepareEnvironment } from '@gmrchk/cli-testing-library';
+
+const cli = await getBinPath()
+
+test('--version should return version number on stdout and zero exit code', async function (t) {
+    const { execute, cleanup } = await prepareEnvironment();
+    t.teardown(async function () {
+        await cleanup();
+    });
+    const { code, stdout, stderr } = await execute('node', `${cli} --version`);
+
+    t.is(code, 0);
+    t.alike(stdout, ['js-compute-runtime 0.5.4'])
+    t.alike(stderr, [])
+});
+
+test('-V should return version number on stdout and zero exit code', async function (t) {
+    const { execute, cleanup } = await prepareEnvironment();
+    t.teardown(async function () {
+        await cleanup();
+    });
+    const { code, stdout, stderr } = await execute('node', `${cli} -V`);
+
+    t.is(code, 0);
+    t.alike(stdout, ['js-compute-runtime 0.5.4'])
+    t.alike(stderr, [])
+});