Add better type of check to toBeObject matcher

package.json

@@ -63,6 +63,7 @@
   "dependencies": {
     "chalk": "^2.3.0",
     "expect": "^22.1.0",
+    "jest-get-type": "^22.4.3",
     "jest-matcher-utils": "^22.0.0"
   },
   "lint-staged": {

src/matchers/toBeObject/__snapshots__/index.test.js.snap

@@ -21,6 +21,13 @@ Expected value to be an object, received:
   <red>0</>"
 `;
 
+exports[`.toBeObject fails when not given an object: 1,2,3 1`] = `
+"<dim>expect(</><red>received</><dim>).toBeObject(</><dim>)</>
+
+Expected value to be an object, received:
+  <red>[1, 2, 3]</>"
+`;
+
 exports[`.toBeObject fails when not given an object: NaN 1`] = `
 "<dim>expect(</><red>received</><dim>).toBeObject(</><dim>)</>
 

src/matchers/toBeObject/index.test.js

@@ -9,15 +9,21 @@ describe('.toBeObject', () => {
     expect({}).toBeObject();
   });
 
-  each([[false], [''], [0], [() => {}], [undefined], [NaN]]).test('fails when not given an object: %s', given => {
-    expect(() => expect(given).toBeObject()).toThrowErrorMatchingSnapshot();
-  });
+  each([[false], [''], [0], [() => {}], [undefined], [NaN], [[1, 2, 3]]]).test(
+    'fails when not given an object: %s',
+    given => {
+      expect(() => expect(given).toBeObject()).toThrowErrorMatchingSnapshot();
+    }
+  );
 });
 
 describe('.not.toBeObject', () => {
-  each([[false], [''], [0], [() => {}], [undefined], [NaN]]).test('passes when not given an object: %s', given => {
-    expect(given).not.toBeObject();
-  });
+  each([[false], [''], [0], [() => {}], [undefined], [NaN], [[1, 2, 3]]]).test(
+    'passes when not given an object: %s',
+    given => {
+      expect(given).not.toBeObject();
+    }
+  );
 
   test('fails when given an object', () => {
     expect(() => expect({}).not.toBeObject()).toThrowErrorMatchingSnapshot();

src/matchers/toBeObject/predicate.js

@@ -1 +1,3 @@
-export default expected => typeof expected === 'object';
+import getType from 'jest-get-type';
+
+export default expected => getType(expected) === 'object';

yarn.lock

@@ -2377,6 +2377,10 @@ jest-get-type@^22.1.0:
   version "22.1.0"
   resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-22.1.0.tgz#4e90af298ed6181edc85d2da500dbd2753e0d5a9"
 
+jest-get-type@^22.4.3:
+  version "22.4.3"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-22.4.3.tgz#e3a8504d8479342dd4420236b322869f18900ce4"
+
 jest-haste-map@^23.0.1:
   version "23.0.1"
   resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-23.0.1.tgz#cd89052abfc8cba01f560bbec09d4f36aec25d4f"