feat: add satisfy alias (#1172)

* feat: add satisfy alias * test: add toSatisfy test
vitest-dev · Apr 20, 2022 · 7dbd837 · 7dbd837
1 parent c2e98ef
commit 7dbd837
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diff --git a/packages/vitest/src/index.ts b/packages/vitest/src/index.ts
@@ -119,6 +119,7 @@ declare global {
       lastReturnedWith<E>(value: E): void
       toHaveNthReturnedWith<E>(nthCall: number, value: E): void
       nthReturnedWith<E>(nthCall: number, value: E): void
+      toSatisfy<E>(matcher: (value: E) => boolean, message?: string): void
     }
 
     // eslint-disable-next-line @typescript-eslint/prefer-ts-expect-error

diff --git a/packages/vitest/src/integrations/chai/jest-expect.ts b/packages/vitest/src/integrations/chai/jest-expect.ts
@@ -536,6 +536,9 @@ export const JestChaiExpect: ChaiPlugin = (chai, utils) => {
       callResult,
     )
   })
+  def('toSatisfy', function() {
+    return this.be.satisfy
+  })
 
   utils.addProperty(chai.Assertion.prototype, 'resolves', function __VITEST_RESOLVES__(this: any) {
     utils.flag(this, 'promise', 'resolves')

diff --git a/test/core/test/jest-expect.test.ts b/test/core/test/jest-expect.test.ts
@@ -419,6 +419,18 @@ describe('toBeTypeOf()', () => {
   })
 })
 
+describe('toSatisfy()',() => {
+  const isOdd = (value: number) => value % 2 !== 0
+
+  it('pass with 0',() => {
+    expect(1).toSatisfy(isOdd)
+  })
+
+  it('pass with negotiation',() => {
+    expect(2).not.toSatisfy(isOdd)
+  })
+})
+
 describe('async expect', () => {
   it('resolves', async() => {
     await expect((async() => 'true')()).resolves.toBe('true')