feature/71-basic-cli (#104)

# Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

- Install Commander package
- Add basic CLI interface to the package

#71

## Type of change

Please delete options that are not relevant.

- [x] New feature (non-breaking change which adds functionality)

# How Has This Been Tested?

Please describe the tests that you ran to verify the changes. Provide instructions so we can reproduce. Please also list any relevant details to your test configuration.

- I have added unit tests for the CLI as it is so far, no commands have been added yet

# Checklist

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that provde my fix is effective or that my feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream modules

Reviewed-on: https://gitea.vylpes.xyz/RabbitLabs/random-bunny/pulls/104
Co-authored-by: Ethan Lane <ethan@vylpes.com>
Co-committed-by: Ethan Lane <ethan@vylpes.com>

package.json

@@ -16,6 +16,7 @@
     "placeholder"
   ],
   "dependencies": {
+    "commander": "^11.1.0",
     "glob-parent": "^6.0.0",
     "got-cjs": "^12.5.4",
     "linqts": "^1.14.4"
@@ -23,6 +24,7 @@
   "scripts": {
     "build": "tsc",
     "start": "ts-node app.ts",
+    "cli": "ts-node src/cli.ts",
     "test": "jest",
     "lint": "eslint .",
     "release": "np --no-publish"

src/cli.ts

@@ -0,0 +1,9 @@
+import { Command } from "commander";
+const program = new Command();
+
+program
+    .name('random-bunny')
+    .description('Get a random image url from a subreddit of your choosing')
+    .version('2.2');
+
+program.parse();

tests/cli.test.ts

@@ -0,0 +1,54 @@
+import { exec } from "child_process";
+import path from "path";
+
+describe('version', () => {
+    test('GIVEN -V flag is supplied, EXPECT version returned', async () => {
+        const result = await cli(['-V'], '.');
+
+        expect(result.code).toBe(0);
+        expect(result.stdout).toBe('2.2\n');
+    });
+
+    test('GIVEN --version is supplied, EXPECT version returned', async () => {
+        const result = await cli(['--version'], '.');
+
+        expect(result.code).toBe(0);
+        expect(result.stdout).toBe('2.2\n');
+    });
+});
+
+describe('help', () => {
+    test('GIVEN -h is supplied, EXPECT help returned', async () => {
+        const result = await cli(['-h'], '.');
+
+        expect(result.code).toBe(0);
+        expect(result.stdout.split('\n')[0]).toBe('Usage: random-bunny [options]');
+    });
+
+    test('GIVEN --help is supplied, EXPECT help returned', async () => {
+        const result = await cli(['--help'], '.');
+
+        expect(result.code).toBe(0);
+        expect(result.stdout.split('\n')[0]).toBe('Usage: random-bunny [options]');
+    });
+})
+
+function cli(args: string[], cwd: string): Promise<cliResult> {
+    return new Promise(resolve => {
+        exec(`node ${path.resolve('./dist/cli.js')} ${args.join(' ')}`,
+        { cwd },
+        (error, stdout, stderr) => { resolve({
+            code: error && error.code ? error.code : 0,
+            error,
+            stdout,
+            stderr });
+        });
+    });
+}
+
+interface cliResult {
+    code: number,
+    error: any,
+    stdout: string,
+    stderr: string,
+}

tests/index.test.ts

@@ -1,7 +1,7 @@
 import { ErrorCode } from "../src/constants/ErrorCode";
 import ErrorMessages from "../src/constants/ErrorMessages";
 import randomBunny from "../src/index";
-import fetch, { CancelableRequest } from "got-cjs";
+import fetch from "got-cjs";
 
 jest.mock('got-cjs');
 const fetchMock = jest.mocked(fetch);

yarn.lock

@@ -839,14 +839,7 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.14.tgz#74a97a5573980802f32c8e47b663530ab3b6b7d1"
   integrity sha512-U3PUjAudAdJBeC2pgN8uTIKgxrb4nlDF3SF0++EldXQvQBGkpFZMSnwQiIoDU77tv45VgNkl/L4ouD+rEomujw==
 
-"@types/node@*":
-  version "20.8.7"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.8.7.tgz#ad23827850843de973096edfc5abc9e922492a25"
-  integrity sha512-21TKHHh3eUHIi2MloeptJWALuCu5H7HQTdTrWIFReA8ad+aggoX+lRes3ex7/FtpC+sVUpFMQ+QTfYr74mruiQ==
-  dependencies:
-    undici-types "~5.25.1"
-
-"@types/node@^20.0.0":
+"@types/node@*", "@types/node@^20.0.0":
   version "20.8.7"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-20.8.7.tgz#ad23827850843de973096edfc5abc9e922492a25"
   integrity sha512-21TKHHh3eUHIi2MloeptJWALuCu5H7HQTdTrWIFReA8ad+aggoX+lRes3ex7/FtpC+sVUpFMQ+QTfYr74mruiQ==
@@ -1586,6 +1579,11 @@ commander-version@^1.1.0:
     "@bconnorwhite/module" "^2.0.2"
     commander "^6.1.0"
 
+commander@^11.1.0:
+  version "11.1.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-11.1.0.tgz#62fdce76006a68e5c1ab3314dc92e800eb83d906"
+  integrity sha512-yPVavfyCcRhmorC7rWlkHn15b4wDVgVmBA7kV4QVBsF7kv/9TKJAbAXVTxvTnwP8HHKjRCJDClKbciiYS7p0DQ==
+
 commander@^6.1.0:
   version "6.2.1"
   resolved "https://registry.yarnpkg.com/commander/-/commander-6.2.1.tgz#0792eb682dfbc325999bb2b84fddddba110ac73c"