138 lines
4.2 KiB
TypeScript
138 lines
4.2 KiB
TypeScript
import TextBuffer from "../src/text-buffer.js";
|
||
import { describe, test, expect } from "vitest";
|
||
|
||
describe("TextBuffer – word‑wise navigation & deletion", () => {
|
||
test("wordRight moves to end‑of‑line when no further boundary", () => {
|
||
const tb = new TextBuffer("hello");
|
||
|
||
// Move the caret inside the word (index 3)
|
||
tb.move("right");
|
||
tb.move("right");
|
||
tb.move("right");
|
||
|
||
tb.move("wordRight");
|
||
|
||
const [, col] = tb.getCursor();
|
||
expect(col).toBe(5); // end of the word / line
|
||
});
|
||
|
||
test("Ctrl+Backspace on raw byte deletes previous word", () => {
|
||
const tb = new TextBuffer("hello world");
|
||
const vp = { height: 10, width: 80 } as const;
|
||
|
||
// Place caret at end
|
||
tb.move("end");
|
||
|
||
// Simulate terminal sending DEL (0x7f) byte with ctrl modifier – Ink
|
||
// usually does *not* set `key.backspace` in this path.
|
||
tb.handleInput("\x7f", { ctrl: true }, vp);
|
||
|
||
expect(tb.getText()).toBe("hello ");
|
||
});
|
||
|
||
test("Option/Alt+Backspace deletes previous word", () => {
|
||
const tb = new TextBuffer("foo bar baz");
|
||
const vp = { height: 10, width: 80 } as const;
|
||
|
||
// caret at end
|
||
tb.move("end");
|
||
|
||
// Simulate Option+Backspace (alt): Ink sets key.backspace = true, key.alt = true (no raw byte)
|
||
tb.handleInput(undefined, { backspace: true, alt: true }, vp);
|
||
|
||
expect(tb.getText()).toBe("foo bar ");
|
||
});
|
||
|
||
test("Option/Alt+Delete deletes previous word (matches shells)", () => {
|
||
const tb = new TextBuffer("foo bar baz");
|
||
const vp = { height: 10, width: 80 } as const;
|
||
|
||
// Place caret at end so we can test backward deletion.
|
||
tb.move("end");
|
||
|
||
// Simulate Option+Delete (parsed as alt-modified Delete on some terminals)
|
||
tb.handleInput(undefined, { delete: true, alt: true }, vp);
|
||
|
||
expect(tb.getText()).toBe("foo bar ");
|
||
});
|
||
|
||
test("wordLeft eventually reaches column 0", () => {
|
||
const tb = new TextBuffer("hello world");
|
||
|
||
// Move to end of line first
|
||
tb.move("end");
|
||
|
||
// two wordLefts should land at start of line
|
||
tb.move("wordLeft");
|
||
tb.move("wordLeft");
|
||
|
||
const [, col] = tb.getCursor();
|
||
expect(col).toBe(0);
|
||
});
|
||
|
||
test("wordRight jumps over a delimiter into the next word", () => {
|
||
const tb = new TextBuffer("hello world");
|
||
|
||
tb.move("wordRight"); // from start – should land after "hello" (between space & w)
|
||
let [, col] = tb.getCursor();
|
||
expect(col).toBe(5);
|
||
|
||
// Next wordRight should move to end of line (after "world")
|
||
tb.move("wordRight");
|
||
[, col] = tb.getCursor();
|
||
expect(col).toBe(11);
|
||
});
|
||
|
||
test("deleteWordLeft after trailing space only deletes the last word, not the whole line", () => {
|
||
const tb = new TextBuffer("I want you to refactor my view ");
|
||
tb.move("end"); // Place caret after the space
|
||
tb.deleteWordLeft();
|
||
expect(tb.getText()).toBe("I want you to refactor my ");
|
||
const [, col] = tb.getCursor();
|
||
expect(col).toBe("I want you to refactor my ".length);
|
||
});
|
||
|
||
test("deleteWordLeft removes the previous word and positions the caret correctly", () => {
|
||
const tb = new TextBuffer("hello world");
|
||
|
||
// Place caret at end of line
|
||
tb.move("end");
|
||
|
||
// Act
|
||
tb.deleteWordLeft();
|
||
|
||
expect(tb.getText()).toBe("hello ");
|
||
const [, col] = tb.getCursor();
|
||
expect(col).toBe(6); // after the space
|
||
});
|
||
|
||
test("deleteWordRight removes the following word", () => {
|
||
const tb = new TextBuffer("hello world");
|
||
|
||
// Move caret to start of "world"
|
||
tb.move("wordRight"); // caret after "hello"
|
||
tb.move("right"); // skip the space, now at index 6 (start of world)
|
||
|
||
// Act
|
||
tb.deleteWordRight();
|
||
|
||
expect(tb.getText()).toBe("hello ");
|
||
const [, col] = tb.getCursor();
|
||
expect(col).toBe(6);
|
||
});
|
||
|
||
test("Shift+Option/Alt+Delete deletes next word", () => {
|
||
const tb = new TextBuffer("foo bar baz");
|
||
const vp = { height: 10, width: 80 } as const;
|
||
|
||
// Move caret between first and second word (after space)
|
||
tb.move("wordRight"); // after foo
|
||
tb.move("right"); // skip space -> start of bar
|
||
|
||
// Shift+Option+Delete should now remove "bar "
|
||
tb.handleInput(undefined, { delete: true, alt: true, shift: true }, vp);
|
||
|
||
expect(tb.getText()).toBe("foo baz");
|
||
});
|
||
});
|