Add unit tests

pgonzal · pgonzal · commit 352ba29a5bc5 · 2018-06-21T19:11:06.000-07:00
diff --git a/libraries/rushell/src/test/Parser.test.ts b/libraries/rushell/src/test/Parser.test.ts
@@ -0,0 +1,47 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
+// See LICENSE in the project root for license information.
+
+import { Tokenizer } from '../Tokenizer';
+import { Parser } from '../Parser';
+import { AstScript } from '../AstNode';
+
+function escape(s: string): string {
+  return s.replace(/\n/g, '[n]')
+    .replace(/\r/g, '[r]')
+    .replace(/\t/g, '[t]')
+    .replace(/\\/g, '[b]');
+}
+
+function matchSnapshot(input: string): void {
+  const tokenizer: Tokenizer = new Tokenizer(input);
+  const parser: Parser = new Parser(tokenizer);
+  const result: AstScript = parser.parse();
+  expect({
+    input: escape(tokenizer.input.toString()),
+    tree: result.getDump()
+  }).toMatchSnapshot();
+}
+
+function matchErrorSnapshot(input: string): void {
+  const tokenizer: Tokenizer = new Tokenizer(input);
+  const parser: Parser = new Parser(tokenizer);
+  let error: Error | undefined = undefined;
+  try {
+    const result: AstScript = parser.parse();
+  } catch (e) {
+    error = e;
+  }
+  expect({
+    input: escape(tokenizer.input.toString()),
+    reportedError: error
+  }).toMatchSnapshot();
+}
+
+test('00: basic inputs', () => {
+  matchSnapshot('command arg1 arg2');
+});
+
+test('01: basic errors', () => {
+  matchErrorSnapshot('@bad');
+  matchErrorSnapshot('command @bad');
+});
diff --git a/libraries/rushell/src/test/__snapshots__/Parser.test.ts.snap b/libraries/rushell/src/test/__snapshots__/Parser.test.ts.snap
@@ -0,0 +1,30 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`00: basic inputs 1`] = `
+Object {
+  "input": "command arg1 arg2",
+  "tree": "Script:
+  Command:
+    CompoundWord:
+      Text=\\"command\\"
+    CompoundWord:
+      Text=\\"arg1\\"
+    CompoundWord:
+      Text=\\"arg2\\"
+",
+}
+`;
+
+exports[`01: basic errors 1`] = `
+Object {
+  "input": "@bad",
+  "reportedError": [Error: (1,1): Expecting a command path],
+}
+`;
+
+exports[`01: basic errors 2`] = `
+Object {
+  "input": "command @bad",
+  "reportedError": [Error: (1,9): Unexpected token: Other],
+}
+`;
