Add a simple test suite for cd commands

.github/workflows/ci.yml

@@ -0,0 +1,17 @@
+name: Continuous Integration
+
+on:
+  pull_request: {}
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: 14
+          cache: 'npm'
+      - run: npm test

config/commands.js

@@ -602,3 +602,5 @@ for (kv of Object.entries(portfolio)) {
 function _filesHere() {
   return DIRS[term.cwd].filter((e) => e != 'README.md' || term.user == "root" );
 }
+
+if (typeof module !== "undefined") module.exports = commands;

config/commands.test.js

@@ -0,0 +1,28 @@
+// TODO add explicit imports in commands.js rather than relying on globals
+global.term = require("../js/terminal-ext")({});
+global.portfolio = require("./portfolio");
+global.commands = require("./commands");
+
+test.each([
+  ["<anything>", "/", "/"],
+  ["<anything>", "~", "~"],
+  ["<anything>", "~/", "~"],
+  ["~", "..", "home"],
+  ["~", "../", "home"],
+  ["<anything>", "../../", "/"],
+  ["<anything>", "../..", "/"],
+  ["<anything>", "../../../", "/"],
+  ["<anything>", "../../../../", "/"],
+  ["<anything>", "/", "/"],
+  ["/", "home", "home"],
+  ["<anything>", "/home", "home"],
+  ["/", "bin", "bin"],
+  ["<anything>", ".", "<anything>"],
+  ["<anything>", "./", "<anything>"],
+  ["<anything>", "", "~"],
+  ["<anything>", "/bin", "bin"],
+])("command.cd(%s, %s)", (initial, args, expected) => {
+  term.cwd = initial;
+  term.command("cd " + args);
+  expect(term.cwd).toBe(expected);
+});

config/portfolio.js

@@ -268,3 +268,5 @@ const portfolio = {
     description: "Kayhan’s spaceflight operations platform allows satellite operators to focus on their core mission.",
   },
 };
+
+if (typeof module !== "undefined") module.exports = portfolio;

js/terminal-ext.js

@@ -145,6 +145,7 @@ extend = (term) => {
       term.command(term.deepLink);
     }
   }
+  return term;
 }
 
 // https://stackoverflow.com/questions/14484787/wrap-text-in-javascript
@@ -175,3 +176,5 @@ function _testWhite(x) {
   var white = new RegExp(/^\s$/);
   return white.test(x.charAt(0));
 };
+
+if (typeof module !== "undefined") module.exports = extend;