support test macros in typescript definitions

Author: ChristianMurphy

types/base.d.ts

@@ -120,5 +120,12 @@ export interface ContextualCallbackTestContext extends CallbackTestContext {
 	context: any;
 }
 
+export interface Macro<I, E, T> {
+	(t: T, input: I, expected: E): void;
+	title? (providedTitle: string, input: I, expected: E): string;
+}
+
 export function test(name: string, run: ContextualTest): void;
 export function test(run: ContextualTest): void;
+export function test<I, E> (run: Macro<I, E, ContextualTestContext> | Macro<I, E, ContextualTestContext>[], input: I, expected: E): void;
+export function test<I, E> (name: string, run: Macro<I, E, ContextualTestContext> | Macro<I, E, ContextualTestContext>[], input: I, expected: E): void;

types/make.js

@@ -51,6 +51,8 @@ function generatePrefixed(prefix) {
 				output += '\t' + writeFunction(part, 'name: string', 'void');
 			} else {
 				const type = testType(parts);
+				output += '\t' + writeFunction(part + '<I, E>', 'implementation: Macro<I, E, ' + type + 'Context>, input: I, expected: E');
+				output += '\t' + writeFunction(part + '<I, E>', 'name: string, implementation: Macro<I, E, ' + type + 'Context>, input: I, expected: E');
 				output += '\t' + writeFunction(part, 'name: string, implementation: ' + type);
 				output += '\t' + writeFunction(part, 'implementation: ' + type);
 			}