Increase test coverage

src/common/all_test.ts

@@ -5,6 +5,7 @@ import Editor from './editor.ts';
 import Row from './row.ts';
 import { getTestRunner } from './runtime.ts';
 import { defaultTerminalSize } from './termios.ts';
+import { Position } from './types.ts';
 import * as Util from './utils.ts';
 
 const {
@@ -39,6 +40,16 @@ testSuite({
 			assertEquals(readKey(KeyCommand.Home), KeyCommand.Home);
 			assertEquals(readKey(KeyCommand.Delete), KeyCommand.Delete);
 		},
+		'readKey Esc': () => {
+			['\x1b', Util.ctrlKey('l')].forEach((code) => {
+				assertEquals(readKey(code), KeyCommand.Escape);
+			});
+		},
+		'readKey Backspace': () => {
+			[Util.ctrlKey('h'), String.fromCodePoint(127)].forEach((code) => {
+				assertEquals(readKey(code), KeyCommand.Backspace);
+			});
+		},
 		'readKey Home': () => {
 			['\x1b[1~', '\x1b[7~', '\x1b[H', '\x1bOH'].forEach((code) => {
 				assertEquals(readKey(code), KeyCommand.Home);
@@ -103,6 +114,29 @@ testSuite({
 			assertFalse(doc.isEmpty());
 			assertInstanceOf(doc.row(0), Row);
 		},
+		'Document.insert': () => {
+			const doc = Document.empty();
+			assertFalse(doc.dirty);
+			doc.insert(Position.at(0, 0), 'foobar');
+			assertEquals(doc.numRows, 1);
+			assertTrue(doc.dirty);
+
+			doc.insert(Position.at(2, 0), 'baz');
+			assertEquals(doc.numRows, 1);
+			assertTrue(doc.dirty);
+
+			doc.insert(Position.at(9, 0), 'buzz');
+			assertEquals(doc.numRows, 1);
+			assertTrue(doc.dirty);
+			const row0 = doc.row(0);
+			assertEquals(row0?.toString(), 'foobazbarbuzz');
+			assertEquals(row0?.rstring(), 'foobazbarbuzz');
+			assertEquals(row0?.rsize, 13);
+
+			doc.insert(Position.at(0, 1), 'Lorem Ipsum');
+			assertEquals(doc.numRows, 2);
+			assertTrue(doc.dirty);
+		},
 	},
 	Editor: {
 		'new Editor': () => {
@@ -110,19 +144,43 @@ testSuite({
 			assertInstanceOf(e, Editor);
 		},
 	},
+	Position: {
+		'default': () => {
+			const p = Position.default();
+			assertEquals(p.x, 0);
+			assertEquals(p.y, 0);
+		},
+		'at': () => {
+			const p = Position.at(5, 7);
+			assertEquals(p.x, 5);
+			assertEquals(p.y, 7);
+		},
+	},
 	Row: {
 		'new Row': () => {
 			const row = new Row();
 			assertEquals(row.toString(), '');
 		},
 	},
-	'Util::Misc fns': {
+	'Util misc fns': {
 		'noop fn': () => {
 			assertExists(Util.noop);
 			assertEquals(Util.noop(), undefined);
 		},
+		'posSub()': () => {
+			assertEquals(Util.posSub(14, 15), 0);
+			assertEquals(Util.posSub(15, 1), 14);
 		},
-	'Util::String fns': {
+		'minSub()': () => {
+			assertEquals(Util.minSub(13, 25, -1), -1);
+			assertEquals(Util.minSub(25, 13, 0), 12);
+		},
+		'maxAdd()': () => {
+			assertEquals(Util.maxAdd(99, 99, 75), 75);
+			assertEquals(Util.maxAdd(25, 74, 101), 99);
+		},
+	},
+	'Util string fns': {
 		'ord()': () => {
 			// Invalid output
 			assertEquals(Util.ord(''), 256);

src/common/ansi.ts

@@ -75,7 +75,7 @@ export function readKey(parsed: string): string {
 		case '\x1b':
 			return KeyCommand.Escape;
 
-		case ctrlKey('H'):
+		case ctrlKey('h'):
 		case String.fromCodePoint(127):
 			return KeyCommand.Backspace;