Add .clear method to mocks. Fix .reset (#291)

* fix(mocks): reset should empty calls

Fixes #290

* Add .clear method to mocks

* Add changeset

---------

Co-authored-by: Piotr Szlachciak <[email protected]>

.changeset/five-cycles-type.md

@@ -0,0 +1,5 @@
+---
+"earl": minor
+---
+
+Add .clear to mocks which clears the calls array. Fixes .reset not clearing the calls.

packages/earl/src/mocks/mockFn.test.ts

@@ -311,6 +311,28 @@ describe('Mock', () => {
       fn.reset()
       expect(fn('foo', 'bar')).to.equal(6)
     })
+
+    it('clears mock calls', () => {
+      const fn = mockFn((_a: string, _b: string) => {})
+      fn('foo', 'bar')
+      expect(fn.calls).to.deep.equal([
+        { args: ['foo', 'bar'], result: { type: 'return', value: undefined } },
+      ])
+      fn.reset()
+      expect(fn.calls).to.be.empty
+    })
+  })
+
+  describe('.clear', () => {
+    it('clears mock calls', () => {
+      const fn = mockFn((_a: string, _b: string) => {})
+      fn('foo', 'bar')
+      expect(fn.calls).to.deep.equal([
+        { args: ['foo', 'bar'], result: { type: 'return', value: undefined } },
+      ])
+      fn.clear()
+      expect(fn.calls).to.be.empty
+    })
   })
 
   describe('.given', () => {

packages/earl/src/mocks/mockFn.ts

@@ -113,11 +113,16 @@ export function mockFn<A extends any[], R>(
     defaultSpec = { type: 'not-ready' }
     oneTimeOverrides = []
     parameterOverrides = []
+    mock.clear()
     if (defaultImplementation) {
       mock.executes(defaultImplementation)
     }
   }
 
+  mock.clear = function () {
+    mock.calls = []
+  }
+
   mock.returns = function (value: any) {
     defaultSpec = { type: 'return', value }
     return mock

packages/earl/src/mocks/types/MockFunction.ts

@@ -125,6 +125,12 @@ export interface MockFunction<A extends any[], R> {
    */
   reset(): void
 
+  /**
+   * Clears any memory of calls to this mock. After clearing the mock will act
+   * as if it was never called.
+   */
+  clear(): void
+
   /**
    * Specifies a different behavior when other arguments are given.
    *