diff --git a/bunfig.toml b/bunfig.toml
new file mode 100644
index 0000000..d0f2114
--- /dev/null
+++ b/bunfig.toml
@@ -0,0 +1,12 @@
+logLevel = "debug" # "debug" | "warn" | "error"
+telemetry = false
+
+[install.lockfile]
+save = false
+
+[test]
+# always enable coverage
+coverage = true
+
+# disable code coverage counting test files
+coverageSkipTestFiles = true
\ No newline at end of file
diff --git a/src/bun/mod.ts b/src/bun/mod.ts
index ab0d017..7ecd658 100644
--- a/src/bun/mod.ts
+++ b/src/bun/mod.ts
@@ -3,14 +3,12 @@
  */
 
 import { IRuntime, RunTimeType } from '../common/mod.ts';
-import BunFFI from './ffi.ts';
 import BunTerminalIO from './terminal_io.ts';
 import BunFileIO from './file_io.ts';
 
 const BunRuntime: IRuntime = {
 	name: RunTimeType.Bun,
 	file: BunFileIO,
-	ffi: BunFFI,
 	term: BunTerminalIO,
 	onEvent: (eventName: string, handler) => process.on(eventName, handler),
 	onExit: (cb: () => void): void => {
diff --git a/src/bun/terminal_io.ts b/src/bun/terminal_io.ts
index 5c962e0..9299b08 100644
--- a/src/bun/terminal_io.ts
+++ b/src/bun/terminal_io.ts
@@ -1,14 +1,13 @@
 /**
  * Wrap the runtime-specific hook into stdin
  */
-import { ITerminal, ITerminalSize } from '../common/mod.ts';
+import {
+	defaultTerminalSize,
+	ITerminal,
+	ITerminalSize,
+} from '../common/mod.ts';
 import Ansi from '../common/ansi.ts';
 
-const defaultTerminalSize: ITerminalSize = {
-	rows: 24,
-	cols: 80,
-};
-
 const BunTerminalIO: ITerminal = {
 	// Deno only returns arguments passed to the script, so
 	// remove the bun runtime executable, and entry script arguments
diff --git a/src/bun/test_base.ts b/src/bun/test_base.ts
index 233a73e..a962b22 100644
--- a/src/bun/test_base.ts
+++ b/src/bun/test_base.ts
@@ -1,42 +1,35 @@
 /**
  * Adapt the bun test interface to the shared testing interface
  */
-import { expect, test as btest } from 'bun:test';
+import { describe, expect, test } from 'bun:test';
 import { ITestBase } from '../common/mod.ts';
 
-class TestBase implements ITestBase {
-	test(name: string, fn: () => void) {
-		return btest(name, fn);
-	}
-
-	assertEquals(actual: unknown, expected: unknown): void {
-		return expect(actual).toEqual(expected);
-	}
-
-	assertExists(actual: unknown): void {
-		return expect(actual).toBeDefined();
-	}
-
-	assertInstanceOf(actual: unknown, expectedType: any): void {
-		return expect(actual).toBeInstanceOf(expectedType);
-	}
-
-	assertNotEquals(actual: unknown, expected: unknown): void {
-		return expect(actual).not.toBe(expected);
-	}
-
-	assertFalse(actual: boolean): void {
-		return expect(actual).toBe(false);
-	}
-
-	assertTrue(actual: boolean): void {
-		return expect(actual).toBe(true);
-	}
-
-	assertStrictEquals(actual: unknown, expected: unknown): void {
-		return expect(actual).toBe(expected);
-	}
+export function testSuite(testObj: any) {
+	Object.keys(testObj).forEach((group) => {
+		describe(group, () => {
+			const groupObj = testObj[group];
+			Object.keys(groupObj).forEach((testName) => {
+				test(testName, groupObj[testName]);
+			});
+		});
+	});
 }
 
-const testBase = new TestBase();
-export default testBase;
+const BunTestBase: ITestBase = {
+	assertEquals: (actual: unknown, expected: unknown) =>
+		expect(actual).toEqual(expected),
+	assertExists: (actual: unknown) => expect(actual).toBeDefined(),
+	assertFalse: (actual: boolean) => expect(actual).toBe(false),
+	assertInstanceOf: (actual: unknown, expectedType: any) =>
+		expect(actual).toBeInstanceOf(expectedType),
+	assertNotEquals: (actual: unknown, expected: unknown) =>
+		expect(actual).not.toBe(expected),
+	assertStrictEquals: (actual: unknown, expected: unknown) =>
+		expect(actual).toBe(expected),
+	assertTrue: (actual: boolean) => expect(actual).toBe(true),
+	test,
+	testGroup: describe,
+	testSuite,
+};
+
+export default BunTestBase;
diff --git a/src/common/all_test.ts b/src/common/all_test.ts
new file mode 100644
index 0000000..5b61605
--- /dev/null
+++ b/src/common/all_test.ts
@@ -0,0 +1,177 @@
+import { getTestRunner } from './runtime.ts';
+import { Ansi, KeyCommand, readKey } from './ansi.ts';
+import { Document, Row } from './document.ts';
+import Buffer from './buffer.ts';
+import {
+	chars,
+	ctrl_key,
+	is_ascii,
+	is_control,
+	noop,
+	ord,
+	strlen,
+	truncate,
+} from './utils.ts';
+import { Editor } from './editor.ts';
+import { defaultTerminalSize } from './termios.ts';
+
+const t = await getTestRunner();
+
+const testObj = {
+	'ANSI::ANSI utils': {
+		'Ansi.moveCursor': () => {
+			t.assertEquals(Ansi.moveCursor(1, 2), '\x1b[2;3H');
+		},
+		'Ansi.moveCursorForward': () => {
+			t.assertEquals(Ansi.moveCursorForward(2), '\x1b[2C');
+		},
+		'Ansi.moveCursorDown': () => {
+			t.assertEquals(Ansi.moveCursorDown(7), '\x1b[7B');
+		},
+	},
+	'ANSI::readKey()': {
+		'readKey passthrough': () => {
+			// Ignore unhandled escape sequences
+			t.assertEquals(readKey('\x1b[]'), '\x1b[]');
+
+			// Pass explicitly mapped values right through
+			t.assertEquals(readKey(KeyCommand.ArrowUp), KeyCommand.ArrowUp);
+			t.assertEquals(readKey(KeyCommand.Home), KeyCommand.Home);
+			t.assertEquals(readKey(KeyCommand.Delete), KeyCommand.Delete);
+		},
+		'readKey Home': () => {
+			['\x1b[1~', '\x1b[7~', '\x1b[H', '\x1bOH'].forEach((code) => {
+				t.assertEquals(readKey(code), KeyCommand.Home);
+			});
+		},
+		'readKey End': () => {
+			['\x1b[4~', '\x1b[8~', '\x1b[F', '\x1bOF'].forEach((code) => {
+				t.assertEquals(readKey(code), KeyCommand.End);
+			});
+		},
+	},
+	Buffer: {
+		'Buffer exists': () => {
+			const b = new Buffer();
+			t.assertInstanceOf(b, Buffer);
+			t.assertEquals(b.strlen(), 0);
+		},
+		'Buffer.appendLine': () => {
+			const b = new Buffer();
+
+			// Carriage return and line feed
+			b.appendLine();
+			t.assertEquals(b.strlen(), 2);
+
+			b.clear();
+			t.assertEquals(b.strlen(), 0);
+
+			b.appendLine('foo');
+			t.assertEquals(b.strlen(), 5);
+		},
+		'Buffer.append': () => {
+			const b = new Buffer();
+
+			b.append('foobar');
+			t.assertEquals(b.strlen(), 6);
+			b.clear();
+
+			b.append('foobar', 3);
+			t.assertEquals(b.strlen(), 3);
+		},
+		'Buffer.flush': async () => {
+			const b = new Buffer();
+			b.appendLine('foobarbaz' + Ansi.ClearLine);
+			t.assertEquals(b.strlen(), 14);
+
+			await b.flush();
+
+			t.assertEquals(b.strlen(), 0);
+		},
+	},
+	Document: {
+		'Document.empty': () => {
+			const doc = Document.empty();
+			t.assertEquals(doc.numRows, 0);
+			t.assertTrue(doc.isEmpty());
+			t.assertEquals(doc.row(0), null);
+		},
+		'Document.appendRow': () => {
+			const doc = Document.empty();
+			doc.appendRow('foobar');
+			t.assertEquals(doc.numRows, 1);
+			t.assertFalse(doc.isEmpty());
+			t.assertInstanceOf(doc.row(0), Row);
+		},
+	},
+	'Document::Row': {
+		'new Row': () => {
+			const row = new Row();
+			t.assertEquals(row.toString(), '');
+		},
+	},
+	Editor: {
+		'new Editor': () => {
+			const e = new Editor(defaultTerminalSize);
+			t.assertInstanceOf(e, Editor);
+		},
+	},
+	'Util::Misc fns': {
+		'noop fn': () => {
+			t.assertExists(noop);
+			t.assertEquals(noop(), undefined);
+		},
+	},
+	'Util::String fns': {
+		'ord() returns 256 on invalid string': () => {
+			t.assertEquals(ord(''), 256);
+		},
+		'ord() returns number on valid string': () => {
+			t.assertEquals(ord('a'), 97);
+		},
+		'chars() properly splits strings into unicode characters': () => {
+			t.assertEquals(chars('😺😸😹'), ['😺', '😸', '😹']);
+		},
+		'ctrl_key() returns expected values': () => {
+			const ctrl_a = ctrl_key('a');
+			t.assertTrue(is_control(ctrl_a));
+			t.assertEquals(ctrl_a, String.fromCodePoint(0x01));
+
+			const invalid = ctrl_key('😺');
+			t.assertFalse(is_control(invalid));
+			t.assertEquals(invalid, '😺');
+		},
+		'is_ascii() properly discerns ascii chars': () => {
+			t.assertTrue(is_ascii('asjyverkjhsdf1928374'));
+			t.assertFalse(is_ascii('😺acalskjsdf'));
+			t.assertFalse(is_ascii('ab😺ac'));
+		},
+		'is_control() works as expected': () => {
+			t.assertFalse(is_control('abc'));
+			t.assertTrue(is_control(String.fromCodePoint(0x01)));
+			t.assertFalse(is_control('😺'));
+		},
+		'strlen() returns expected length for ascii strings': () => {
+			t.assertEquals(strlen('abc'), 'abc'.length);
+		},
+		'strlen() returns expected length for multibyte characters': () => {
+			t.assertEquals(strlen('😺😸😹'), 3);
+			t.assertNotEquals('😺😸😹'.length, strlen('😺😸😹'));
+
+			// Skin tone modifier + base character
+			t.assertEquals(strlen('🤰🏼'), 2);
+			t.assertNotEquals('🤰🏼'.length, strlen('🤰🏼'));
+
+			// This has 4 sub-characters, and 3 zero-width-joiners
+			t.assertEquals(strlen('👨‍👩‍👧‍👦'), 7);
+			t.assertNotEquals('👨‍👩‍👧‍👦'.length, strlen('👨‍👩‍👧‍👦'));
+		},
+		'truncate() shortens strings': () => {
+			t.assertEquals(truncate('😺😸😹', 1), '😺');
+			t.assertEquals(truncate('😺😸😹', 5), '😺😸😹');
+			t.assertEquals(truncate('👨‍👩‍👧‍👦', 5), '👨‍👩‍👧');
+		},
+	},
+};
+
+t.testSuite(testObj);
diff --git a/src/common/ansi.ts b/src/common/ansi.ts
index ab59288..d4d5873 100644
--- a/src/common/ansi.ts
+++ b/src/common/ansi.ts
@@ -4,10 +4,6 @@
 
 export const ANSI_PREFIX = '\x1b[';
 
-function esc(pieces: TemplateStringsArray): string {
-	return ANSI_PREFIX + pieces[0];
-}
-
 /**
  * ANSI escapes for various inputs
  */
@@ -26,12 +22,12 @@ export enum KeyCommand {
 }
 
 export const Ansi = {
-	ClearLine: esc`K`,
-	ClearScreen: esc`2J`,
-	ResetCursor: esc`H`,
-	HideCursor: esc`?25l`,
-	ShowCursor: esc`?25h`,
-	GetCursorLocation: esc`6n`,
+	ClearLine: ANSI_PREFIX + 'K',
+	ClearScreen: ANSI_PREFIX + '2J',
+	ResetCursor: ANSI_PREFIX + 'H',
+	HideCursor: ANSI_PREFIX + '?25l',
+	ShowCursor: ANSI_PREFIX + '?25h',
+	GetCursorLocation: ANSI_PREFIX + '6n',
 	moveCursor: function moveCursor(row: number, col: number): string {
 		// Convert to 1-based counting
 		row++;
@@ -57,15 +53,15 @@ export function readKey(parsed: string): string {
 
 	// Some keycodes have multiple potential inputs
 	switch (parsed) {
-		case '\x1bOH':
-		case '\x1b[7~':
 		case '\x1b[1~':
+		case '\x1b[7~':
+		case '\x1bOH':
 		case '\x1b[H':
 			return KeyCommand.Home;
 
-		case '\x1bOF':
-		case '\x1b[8~':
 		case '\x1b[4~':
+		case '\x1b[8~':
+		case '\x1bOF':
 		case '\x1b[F':
 			return KeyCommand.End;
 
diff --git a/src/common/ansi_test.ts b/src/common/ansi_test.ts
deleted file mode 100644
index f466eb0..0000000
--- a/src/common/ansi_test.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-import { getTestRunner } from './mod.ts';
-import Ansi, { KeyCommand, readKey } from './ansi.ts';
-
-getTestRunner().then((t) => {
-	t.test('Ansi.moveCursor', () => {
-		t.assertEquals(Ansi.moveCursor(1, 2), '\x1b[2;3H');
-	});
-
-	t.test('Ansi.moveCursorForward', () => {
-		t.assertEquals(Ansi.moveCursorForward(2), '\x1b[2C');
-	});
-
-	t.test('Ansi.moveCursorDown', () => {
-		t.assertEquals(Ansi.moveCursorDown(7), '\x1b[7B');
-	});
-
-	t.test('readKey', () => {
-		// Ignore unhandled escape sequences
-		t.assertEquals(readKey('\x1b[]'), '\x1b[]');
-
-		// Pass explicitly mapped values right through
-		t.assertEquals(readKey(KeyCommand.ArrowUp), KeyCommand.ArrowUp);
-		t.assertEquals(readKey(KeyCommand.Home), KeyCommand.Home);
-
-		['\x1bOH', '\x1b[7~', '\x1b[1~', '\x1b[H'].forEach((code) => {
-			t.assertEquals(readKey(code), KeyCommand.Home);
-		});
-
-		['\x1bOF', '\x1b[8~', '\x1b[4~', '\x1b[F'].forEach((code) => {
-			t.assertEquals(readKey(code), KeyCommand.End);
-		});
-	});
-});
diff --git a/src/common/buffer.ts b/src/common/buffer.ts
index 0b9b8e2..5ead78b 100644
--- a/src/common/buffer.ts
+++ b/src/common/buffer.ts
@@ -1,5 +1,5 @@
 import { strlen, truncate } from './utils.ts';
-import { getRuntime, importForRuntime } from './runtime.ts';
+import { getRuntime } from './runtime.ts';
 
 class Buffer {
 	#b = '';
@@ -23,7 +23,7 @@ class Buffer {
 	 * Output the contents of the buffer into stdout
 	 */
 	public async flush() {
-		const term = await importForRuntime('terminal_io');
+		const { term } = await getRuntime();
 		await term.writeStdout(this.#b);
 		this.clear();
 	}
diff --git a/src/common/buffer_test.ts b/src/common/buffer_test.ts
deleted file mode 100644
index 488e762..0000000
--- a/src/common/buffer_test.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-import { getTestRunner } from './runtime.ts';
-import Buffer from './buffer.ts';
-
-getTestRunner().then((t) => {
-	t.test('Buffer exists', () => {
-		const b = new Buffer();
-		t.assertInstanceOf(b, Buffer);
-		t.assertEquals(b.strlen(), 0);
-	});
-
-	t.test('Buffer.appendLine', () => {
-		const b = new Buffer();
-
-		// Carriage return and line feed
-		b.appendLine();
-		t.assertEquals(b.strlen(), 2);
-
-		b.clear();
-		t.assertEquals(b.strlen(), 0);
-
-		b.appendLine('foo');
-		t.assertEquals(b.strlen(), 5);
-	});
-
-	t.test('Buffer.append', () => {
-		const b = new Buffer();
-
-		b.append('foobar');
-		t.assertEquals(b.strlen(), 6);
-		b.clear();
-
-		b.append('foobar', 3);
-		t.assertEquals(b.strlen(), 3);
-	});
-
-	t.test('Buffer.flush', async () => {
-		const b = new Buffer();
-		b.append('foobarbaz');
-		t.assertEquals(b.strlen(), 9);
-
-		await b.flush();
-
-		t.assertEquals(b.strlen(), 0);
-	});
-});
diff --git a/src/common/document.ts b/src/common/document.ts
index b92e0de..ec3f86a 100644
--- a/src/common/document.ts
+++ b/src/common/document.ts
@@ -55,7 +55,7 @@ export class Document {
 		return null;
 	}
 
-	protected appendRow(s: string): void {
+	public appendRow(s: string): void {
 		this.#rows.push(new Row(s));
 	}
 }
diff --git a/src/common/runtime.ts b/src/common/runtime.ts
index 2e88040..0875e2a 100644
--- a/src/common/runtime.ts
+++ b/src/common/runtime.ts
@@ -95,11 +95,6 @@ export interface IRuntime {
 	 */
 	name: RunTimeType;
 
-	/**
-	 * Runtime-specific FFI
-	 */
-	ffi: IFFI;
-
 	/**
 	 * Runtime-specific terminal functionality
 	 */
diff --git a/src/common/termios.ts b/src/common/termios.ts
index 4b94765..873ed39 100644
--- a/src/common/termios.ts
+++ b/src/common/termios.ts
@@ -1,10 +1,15 @@
-import { die, getRuntime, IFFI } from './mod.ts';
+import { die, IFFI, importForRuntime, ITerminalSize } from './mod.ts';
 
 export const STDIN_FILENO = 0;
 export const TCSANOW = 0;
 
 export const TERMIOS_SIZE = 60;
 
+export const defaultTerminalSize: ITerminalSize = {
+	rows: 24,
+	cols: 80,
+};
+
 /**
  * Implementation to toggle raw mode
  */
@@ -112,7 +117,7 @@ export const getTermios = async () => {
 	}
 
 	// Get the runtime-specific ffi wrappers
-	const { ffi } = await getRuntime();
+	const ffi = await importForRuntime('ffi');
 	termiosSingleton = new Termios(ffi);
 
 	return termiosSingleton;
diff --git a/src/common/types.ts b/src/common/types.ts
index d5c67d1..e14eac6 100644
--- a/src/common/types.ts
+++ b/src/common/types.ts
@@ -15,12 +15,14 @@ export interface IPoint {
  * The shared test interface, so tests can be run by both runtimes
  */
 export interface ITestBase {
-	test(name: string, fn: () => void): void;
 	assertEquals(actual: unknown, expected: unknown): void;
+	assertExists(actual: unknown): void;
+	assertFalse(actual: boolean): void;
+	assertInstanceOf(actual: unknown, expectedType: any): void;
 	assertNotEquals(actual: unknown, expected: unknown): void;
 	assertStrictEquals(actual: unknown, expected: unknown): void;
-	assertExists(actual: unknown): void;
-	assertInstanceOf(actual: unknown, expectedType: any): void;
 	assertTrue(actual: boolean): void;
-	assertFalse(actual: boolean): void;
+	test(name: string, fn: () => void, timeout?: number): void;
+	testGroup(name: string, fn: () => void): void;
+	testSuite(testObj: any): void;
 }
diff --git a/src/common/utils_test.ts b/src/common/utils_test.ts
deleted file mode 100644
index a4900d8..0000000
--- a/src/common/utils_test.ts
+++ /dev/null
@@ -1,74 +0,0 @@
-import { getTestRunner } from './mod.ts';
-import {
-	chars,
-	ctrl_key,
-	is_ascii,
-	is_control,
-	noop,
-	ord,
-	strlen,
-	truncate,
-} from './utils.ts';
-
-getTestRunner().then((t) => {
-	t.test('noop fn', () => {
-		t.assertExists(noop);
-		t.assertEquals(noop(), undefined);
-	});
-
-	// ---------------------------------------------------------------------------
-	// Strings
-	// ---------------------------------------------------------------------------
-	t.test('ord fn returns 256 on invalid string', () => {
-		t.assertEquals(ord(''), 256);
-	});
-
-	t.test('chars fn properly splits strings into unicode characters', () => {
-		t.assertEquals(chars('😺😸😹'), ['😺', '😸', '😹']);
-	});
-
-	t.test('ctrl_key fn returns expected values', () => {
-		const ctrl_a = ctrl_key('a');
-		t.assertTrue(is_control(ctrl_a));
-		t.assertEquals(ctrl_a, String.fromCodePoint(0x01));
-
-		const invalid = ctrl_key('😺');
-		t.assertFalse(is_control(invalid));
-		t.assertEquals(invalid, '😺');
-	});
-
-	t.test('is_ascii properly discerns ascii chars', () => {
-		t.assertTrue(is_ascii('asjyverkjhsdf1928374'));
-		t.assertFalse(is_ascii('😺acalskjsdf'));
-		t.assertFalse(is_ascii('ab😺ac'));
-	});
-
-	t.test('is_control fn works as expected', () => {
-		t.assertFalse(is_control('abc'));
-		t.assertTrue(is_control(String.fromCodePoint(0x01)));
-		t.assertFalse(is_control('😺'));
-	});
-
-	t.test('strlen fn returns expected length for ascii strings', () => {
-		t.assertEquals(strlen('abc'), 'abc'.length);
-	});
-
-	t.test('strlen fn returns expected length for multibyte characters', () => {
-		t.assertEquals(strlen('😺😸😹'), 3);
-		t.assertNotEquals('😺😸😹'.length, strlen('😺😸😹'));
-
-		// Skin tone modifier + base character
-		t.assertEquals(strlen('🤰🏼'), 2);
-		t.assertNotEquals('🤰🏼'.length, strlen('🤰🏼'));
-
-		// This has 4 sub-characters, and 3 zero-width-joiners
-		t.assertEquals(strlen('👨‍👩‍👧‍👦'), 7);
-		t.assertNotEquals('👨‍👩‍👧‍👦'.length, strlen('👨‍👩‍👧‍👦'));
-	});
-
-	t.test('truncate shortens strings', () => {
-		t.assertEquals(truncate('😺😸😹', 1), '😺');
-		t.assertEquals(truncate('😺😸😹', 5), '😺😸😹');
-		t.assertEquals(truncate('👨‍👩‍👧‍👦', 5), '👨‍👩‍👧');
-	});
-});
diff --git a/src/deno/mod.ts b/src/deno/mod.ts
index f7835b0..48d33f4 100644
--- a/src/deno/mod.ts
+++ b/src/deno/mod.ts
@@ -2,14 +2,12 @@
  * The main entrypoint when using Deno as the runtime
  */
 import { IRuntime, RunTimeType } from '../common/mod.ts';
-import DenoFFI from './ffi.ts';
 import DenoTerminalIO from './terminal_io.ts';
 import DenoFileIO from './file_io.ts';
 
 const DenoRuntime: IRuntime = {
 	name: RunTimeType.Deno,
 	file: DenoFileIO,
-	ffi: DenoFFI,
 	term: DenoTerminalIO,
 	onEvent: (eventName: string, handler) =>
 		globalThis.addEventListener(eventName, handler),
diff --git a/src/deno/test_base.ts b/src/deno/test_base.ts
index d6070fb..b1a1ec5 100644
--- a/src/deno/test_base.ts
+++ b/src/deno/test_base.ts
@@ -9,43 +9,34 @@ const {
 	assertStrictEquals,
 } = stdAssert;
 
-class TestBase implements ITestBase {
-	test(name: string, fn: () => void): void {
-		return Deno.test(name, fn);
-	}
+export function testSuite(testObj: any) {
+	Object.keys(testObj).forEach((group) => {
+		const groupObj = testObj[group];
+		Object.keys(groupObj).forEach((testName) => {
+			Deno.test(testName, groupObj[testName]);
+		});
+	});
+}
 
-	assertEquals(actual: unknown, expected: unknown): void {
-		return assertEquals(actual, expected);
-	}
-
-	assertStrictEquals(actual: unknown, expected: unknown) {
-		return assertStrictEquals(actual, expected);
-	}
-
-	assertNotEquals(actual: unknown, expected: unknown): void {
-		return assertNotEquals(actual, expected);
-	}
-
-	assertExists(actual: unknown, msg?: string): void {
-		return assertExists(actual, msg);
-	}
-
-	assertInstanceOf(actual: unknown, expectedType: any): void {
-		return assertInstanceOf(actual, expectedType);
-	}
-
-	assertTrue(actual: boolean): void {
+const DenoTestBase: ITestBase = {
+	assertEquals,
+	assertExists,
+	assertInstanceOf,
+	assertNotEquals,
+	assertStrictEquals,
+	assertTrue: function (actual: boolean): void {
 		if (actual !== true) {
 			throw new AssertionError(`actual: "${actual}" expected to be true"`);
 		}
-	}
-
+	},
 	assertFalse(actual: boolean): void {
 		if (actual !== false) {
 			throw new AssertionError(`actual: "${actual}" expected to be false"`);
 		}
-	}
-}
+	},
+	test: Deno.test,
+	testGroup: (_name: string, fn) => fn(),
+	testSuite,
+};
 
-const testBase = new TestBase();
-export default testBase;
+export default DenoTestBase;