feat: integrate Pi backend and Pi Web

pi-web/lib/terminal-input.test.mjs

@@ -0,0 +1,46 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+async function loadSubject() {
+  return import("./terminal-input.ts");
+}
+
+function key(keyValue, modifiers = {}) {
+  return {
+    key: keyValue,
+    altKey: false,
+    ctrlKey: false,
+    metaKey: false,
+    shiftKey: false,
+    ...modifiers,
+  };
+}
+
+test("maps navigation and editing keys to terminal sequences", async () => {
+  const { toTerminalKeyData } = await loadSubject();
+
+  assert.equal(toTerminalKeyData(key("ArrowDown")), "\x1b[B");
+  assert.equal(toTerminalKeyData(key("Home")), "\x1b[H");
+  assert.equal(toTerminalKeyData(key("Delete")), "\x1b[3~");
+  assert.equal(toTerminalKeyData(key("Tab", { shiftKey: true })), "\x1b[Z");
+  assert.equal(toTerminalKeyData(key("Enter", { shiftKey: true })), "\n");
+});
+
+test("maps legacy control and alt keys used by pi-tui", async () => {
+  const { toTerminalKeyData } = await loadSubject();
+
+  assert.equal(toTerminalKeyData(key("c", { ctrlKey: true })), "\x03");
+  assert.equal(toTerminalKeyData(key("]", { ctrlKey: true })), "\x1d");
+  assert.equal(toTerminalKeyData(key("ArrowLeft", { altKey: true })), "\x1bb");
+  assert.equal(toTerminalKeyData(key("x", { altKey: true })), "\x1bx");
+  assert.equal(toTerminalKeyData(key("v", { ctrlKey: true })), null);
+  assert.equal(toTerminalKeyData(key("x", { metaKey: true })), null);
+});
+
+test("leaves printable text to the text input and wraps pasted text", async () => {
+  const { asBracketedPaste, toTerminalKeyData } = await loadSubject();
+
+  assert.equal(toTerminalKeyData(key("a")), null);
+  assert.equal(toTerminalKeyData(key(" ")), null);
+  assert.equal(asBracketedPaste("first\nsecond"), "\x1b[200~first\nsecond\x1b[201~");
+});