[Init] Initial commit - NetMesh terminal manager

components/terminal/runtime/terminalCopyShortcut.test.ts

@@ -0,0 +1,86 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import {
+  isPlainCtrlCInterruptChord,
+  isPlainMetaCCopyChord,
+  shouldPassThroughCopyShortcut,
+} from "./terminalCopyShortcut.ts";
+
+const keyboardEvent = (
+  key: string,
+  code: string,
+  modifiers: Partial<KeyboardEvent> = {},
+): KeyboardEvent => ({
+  key,
+  code,
+  ctrlKey: false,
+  shiftKey: false,
+  altKey: false,
+  metaKey: false,
+  ...modifiers,
+}) as KeyboardEvent;
+
+test("plain Ctrl+C copy with no selection passes through for SIGINT", () => {
+  const event = keyboardEvent("c", "KeyC", { ctrlKey: true });
+
+  assert.equal(isPlainCtrlCInterruptChord(event), true);
+  assert.equal(shouldPassThroughCopyShortcut("copy", false, event), true);
+});
+
+test("plain Cmd+C copy with no selection passes through for Kitty Super+C", () => {
+  const event = keyboardEvent("c", "KeyC", { metaKey: true });
+
+  assert.equal(isPlainMetaCCopyChord(event), true);
+  assert.equal(isPlainCtrlCInterruptChord(event), false);
+  assert.equal(shouldPassThroughCopyShortcut("copy", false, event), true);
+});
+
+test("copy shortcut does not pass through when text is selected", () => {
+  const ctrlC = keyboardEvent("c", "KeyC", { ctrlKey: true });
+  const cmdC = keyboardEvent("c", "KeyC", { metaKey: true });
+
+  assert.equal(shouldPassThroughCopyShortcut("copy", true, ctrlC), false);
+  assert.equal(shouldPassThroughCopyShortcut("copy", true, cmdC), false);
+});
+
+test("copy shortcut does not pass through for shifted or alternate chords", () => {
+  assert.equal(
+    shouldPassThroughCopyShortcut("copy", false, keyboardEvent("C", "KeyC", { ctrlKey: true, shiftKey: true })),
+    false,
+  );
+  assert.equal(
+    shouldPassThroughCopyShortcut("copy", false, keyboardEvent("C", "KeyC", { metaKey: true, shiftKey: true })),
+    false,
+  );
+  assert.equal(
+    shouldPassThroughCopyShortcut("copy", false, keyboardEvent("l", "KeyL", { ctrlKey: true })),
+    false,
+  );
+  assert.equal(
+    shouldPassThroughCopyShortcut("copy", false, keyboardEvent("c", "KeyC", { metaKey: true, ctrlKey: true })),
+    false,
+  );
+  assert.equal(
+    shouldPassThroughCopyShortcut("paste", false, keyboardEvent("c", "KeyC", { ctrlKey: true })),
+    false,
+  );
+  assert.equal(
+    shouldPassThroughCopyShortcut("paste", false, keyboardEvent("c", "KeyC", { metaKey: true })),
+    false,
+  );
+});
+
+test("plain Ctrl+C copy passthrough follows the physical C key on non-Latin layouts", () => {
+  const event = keyboardEvent("\u0441", "KeyC", { ctrlKey: true });
+
+  assert.equal(isPlainCtrlCInterruptChord(event), true);
+  assert.equal(shouldPassThroughCopyShortcut("copy", false, event), true);
+});
+
+test("plain Cmd+C copy passthrough follows the physical C key on non-Latin layouts", () => {
+  const event = keyboardEvent("\u0441", "KeyC", { metaKey: true });
+
+  assert.equal(isPlainMetaCCopyChord(event), true);
+  assert.equal(shouldPassThroughCopyShortcut("copy", false, event), true);
+});