Supports isolating tests

Author: kettanaito

test/setup/runner.ts

@@ -3,6 +3,7 @@ import { Path, match } from '../../src/match'
 export interface Scenario {
   given: Path
   when: Array<{
+    only?: boolean
     actual: string
     it: {
       [key: string]: any
@@ -16,14 +17,11 @@ export const runner = (name: string, scenarios: Scenario[]) => {
       describe(`given "${scenario.given}" path`, () => {
         scenario.when.forEach((data) => {
           describe(`and "${data.actual}" url`, () => {
-            let result: ReturnType<typeof match>
-
-            beforeAll(() => {
-              result = match(scenario.given, data.actual)
-            })
+            const test = data.only ? it.only : it
 
             Object.entries(data.it).forEach(([key, expectedValue]) => {
-              it(`"${key}": "${JSON.stringify(expectedValue)}"`, () => {
+              test(`"${key}": "${JSON.stringify(expectedValue)}"`, () => {
+                const result = match(scenario.given, data.actual)
                 expect(result).toHaveProperty(key, expectedValue)
               })
             })