Minimal set of tests on the CLI

test/cli.js

@@ -0,0 +1,44 @@
+import assert from 'node:assert/strict';
+import { exec as execCb } from 'node:child_process';
+import { promisify } from 'node:util';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const scriptPath = path.dirname(fileURLToPath(import.meta.url));
+const root = path.resolve(scriptPath, '..');
+const execOptions = { cwd: root };
+
+async function strudy(params) {
+  const exec = promisify(execCb);
+  const cmd = `node --disable-warning=ExperimentalWarning strudy.js ${params}`;
+  try {
+    const { stdout, stderr } = await exec(cmd, execOptions);
+    return { stdout, stderr };
+  }
+  catch (err) {
+    const { stdout, stderr } = err;
+    return { stdout, stderr };
+  }
+}
+
+describe(`Strudy's CLI`, function () {
+  this.slow(5000);
+
+  it('reports usage help when asked', async function () {
+    const { stdout, stderr } = await strudy(`--help`);
+    assert.match(stdout, /^Usage: strudy \[options\] <report>/);
+    assert.deepEqual(stderr, '');
+  });
+
+  it('expects a report argument', async function () {
+    const { stdout, stderr } = await strudy(``);
+    assert.match(stderr, /error: missing required argument 'report'/);
+    assert.deepEqual(stdout, '');
+  });
+
+  it('reports an error when provided report does not exist', async function () {
+    const { stdout, stderr } = await strudy(`notareport`);
+    assert.match(stderr, /Could not find/);
+    assert.deepEqual(stdout, '');
+  });
+});