fix: throw error if original funciton threw

tinylibs · Jan 7, 2022 · 0595136 · 0595136
1 parent c9a6383
commit 0595136
Show file tree

Hide file tree

Showing 2 changed files with 19 additions and 0 deletions.
diff --git a/src/spy.ts b/src/spy.ts
@@ -61,6 +61,8 @@ export function spy<A extends any[], R>(cb?: (...args: A) => R): SpyFn<A, R> {
       } catch (err: any) {
         result = err
         type = 'error'
+        fn.results.push([type, err])
+        throw err
       }
     }
     let resultTuple: ResultFn<R> = [type, result]

diff --git a/test/index.test.ts b/test/index.test.ts
@@ -573,3 +573,20 @@ test('no descriptor', () => {
   expect(getter.called).toBe(true)
   expect(getter.returns[0]).toBe(42)
 })
+
+test('throw error', () => {
+  const obj = {
+    err: () => {},
+  }
+
+  spyOn(obj, 'err').willCall(() => {
+    throw new Error('oh no')
+  })
+
+  try {
+    obj.err()
+    expect.fail('should be catched')
+  } catch (err) {
+    expect(err.message).toBe('oh no')
+  }
+})