Use iterableEquality in spy matchers

While working on custom matchers to solve #3574, I found out that the cause for
not seeing this issue in `expect().toEqual()` comes from the fact that this
matcher passes the `iterableEquality` to the `equals()` function.

When I added this to the equal calls for our spy matchers as well, Immutable.js
types were properly suppored.

I'm considering this is a bug since the `toBeCalledWith()` matchers should
behave the same as the `equals()` matcher.

packages/jest-matchers/src/__tests__/__snapshots__/spy_matchers.test.js.snap

@@ -16,6 +16,13 @@ Expected mock function to have been last called with:
 But it was <red>not called</>."
 `;
 
+exports[`lastCalledWith works with Immutable.js objects 1`] = `
+"<dim>expect(<red>jest.fn()</><dim>).not.lastCalledWith(<green>expected</><dim>)
+
+Expected mock function to not have been last called with:
+  <green>[Immutable.Map {a: {\\"b\\": \\"c\\"}}, Immutable.Map {a: {\\"b\\": \\"c\\"}}]</>"
+`;
+
 exports[`lastCalledWith works with arguments that don't match 1`] = `
 "<dim>expect(<red>jest.fn()</><dim>).lastCalledWith(<green>expected</><dim>)
 
@@ -205,6 +212,13 @@ Expected mock function to have been called with:
 But it was <red>not called</>."
 `;
 
+exports[`toHaveBeenCalledWith works with Immutable.js objects 1`] = `
+"<dim>expect(<red>jest.fn()</><dim>).not.toHaveBeenCalledWith(<green>expected</><dim>)
+
+Expected mock function not to have been called with:
+  <green>[Immutable.Map {a: {\\"b\\": \\"c\\"}}, Immutable.Map {a: {\\"b\\": \\"c\\"}}]</>"
+`;
+
 exports[`toHaveBeenCalledWith works with arguments that don't match 1`] = `
 "<dim>expect(<red>jest.fn()</><dim>).toHaveBeenCalledWith(<green>expected</><dim>)
 
@@ -253,6 +267,13 @@ Expected mock function to have been last called with:
 But it was <red>not called</>."
 `;
 
+exports[`toHaveBeenLastCalledWith works with Immutable.js objects 1`] = `
+"<dim>expect(<red>jest.fn()</><dim>).not.toHaveBeenLastCalledWith(<green>expected</><dim>)
+
+Expected mock function to not have been last called with:
+  <green>[Immutable.Map {a: {\\"b\\": \\"c\\"}}, Immutable.Map {a: {\\"b\\": \\"c\\"}}]</>"
+`;
+
 exports[`toHaveBeenLastCalledWith works with arguments that don't match 1`] = `
 "<dim>expect(<red>jest.fn()</><dim>).toHaveBeenLastCalledWith(<green>expected</><dim>)
 

packages/jest-matchers/src/__tests__/spy_matchers.test.js

@@ -8,6 +8,7 @@
  * @emails oncall+jsinfra
  */
 
+const Immutable = require('immutable');
 const jestExpect = require('../');
 
 ['toHaveBeenCalled', 'toBeCalled'].forEach(called => {
@@ -167,4 +168,17 @@ describe('toHaveBeenCalledTimes', () => {
       jestExpect(fn).not[calledWith]('foo', 'bar'),
     ).toThrowErrorMatchingSnapshot();
   });
+
+  test(`${calledWith} works with Immutable.js objects`, () => {
+    const fn = jest.fn();
+    const directlyCreated = new Immutable.Map([['a', {b: 'c'}]]);
+    const indirectlyCreated = new Immutable.Map().set('a', {b: 'c'});
+    fn(directlyCreated, indirectlyCreated);
+
+    jestExpect(fn)[calledWith](indirectlyCreated, directlyCreated);
+
+    expect(() =>
+      jestExpect(fn).not[calledWith](indirectlyCreated, directlyCreated),
+    ).toThrowErrorMatchingSnapshot();
+  });
 });

packages/jest-matchers/src/matchers.js

@@ -23,7 +23,12 @@ import {
   printExpected,
   printWithType,
 } from 'jest-matcher-utils';
-import {getObjectSubset, getPath, hasOwnProperty} from './utils';
+import {
+  getObjectSubset,
+  getPath,
+  hasOwnProperty,
+  iterableEquality,
+} from './utils';
 import {equals} from './jasmine_utils';
 
 type ContainIterable =
@@ -33,36 +38,6 @@ type ContainIterable =
   | DOMTokenList
   | HTMLCollection<any>;
 
-const IteratorSymbol = Symbol.iterator;
-
-const hasIterator = object => !!(object != null && object[IteratorSymbol]);
-const iterableEquality = (a, b) => {
-  if (
-    typeof a !== 'object' ||
-    typeof b !== 'object' ||
-    Array.isArray(a) ||
-    Array.isArray(b) ||
-    !hasIterator(a) ||
-    !hasIterator(b)
-  ) {
-    return undefined;
-  }
-  if (a.constructor !== b.constructor) {
-    return false;
-  }
-  const bIterator = b[IteratorSymbol]();
-
-  for (const aValue of a) {
-    const nextB = bIterator.next();
-    if (nextB.done || !equals(aValue, nextB.value, [iterableEquality])) {
-      return false;
-    }
-  }
-  if (!bIterator.next().done) {
-    return false;
-  }
-  return true;
-};
 const isObjectWithKeys = a =>
   a !== null &&
   typeof a === 'object' &&

packages/jest-matchers/src/spy_matchers.js

@@ -24,6 +24,7 @@ import {
   RECEIVED_COLOR,
 } from 'jest-matcher-utils';
 import {equals} from './jasmine_utils';
+import {iterableEquality} from './utils';
 
 const RECEIVED_NAME = {
   'mock function': 'jest.fn()',
@@ -68,7 +69,7 @@ const createToBeCalledWithMatcher = matcherName => (
   const calls = receivedIsSpy
     ? received.calls.all().map(x => x.args)
     : received.mock.calls;
-  const pass = calls.some(call => equals(call, expected));
+  const pass = calls.some(call => equals(call, expected, [iterableEquality]));
 
   const message = pass
     ? () =>
@@ -97,7 +98,7 @@ const createLastCalledWithMatcher = matcherName => (
   const calls = receivedIsSpy
     ? received.calls.all().map(x => x.args)
     : received.mock.calls;
-  const pass = equals(calls[calls.length - 1], expected);
+  const pass = equals(calls[calls.length - 1], expected, [iterableEquality]);
 
   const message = pass
     ? () =>

packages/jest-matchers/src/utils.js

@@ -8,6 +8,8 @@
  * @flow
  */
 
+import {equals} from './jasmine_utils';
+
 type GetPath = {
   hasEndProp?: boolean,
   lastTraversedObject: ?Object,
@@ -91,8 +93,40 @@ const getObjectSubset = (object: Object, subset: Object) => {
   return object;
 };
 
+const IteratorSymbol = Symbol.iterator;
+
+const hasIterator = object => !!(object != null && object[IteratorSymbol]);
+const iterableEquality = (a: any, b: any) => {
+  if (
+    typeof a !== 'object' ||
+    typeof b !== 'object' ||
+    Array.isArray(a) ||
+    Array.isArray(b) ||
+    !hasIterator(a) ||
+    !hasIterator(b)
+  ) {
+    return undefined;
+  }
+  if (a.constructor !== b.constructor) {
+    return false;
+  }
+  const bIterator = b[IteratorSymbol]();
+
+  for (const aValue of a) {
+    const nextB = bIterator.next();
+    if (nextB.done || !equals(aValue, nextB.value, [iterableEquality])) {
+      return false;
+    }
+  }
+  if (!bIterator.next().done) {
+    return false;
+  }
+  return true;
+};
+
 module.exports = {
   getObjectSubset,
   getPath,
   hasOwnProperty,
+  iterableEquality,
 };