Moved to error assertion tests to a separate file

test/assertions/to-error.spec.js

@@ -0,0 +1,44 @@
+/*global expect*/
+describe('to error assertion', function () {
+    describe('with a function that throws', function () {
+        describe('with the "not" flag', function () {
+            it('should indicate that the function threw', function () {
+                expect(function () {
+                    expect(function () {
+                        throw new Error('yikes');
+                    }, 'not to error');
+                }, 'to throw',
+                       "expected function () { throw new Error('yikes'); } not to error\n" +
+                       "  threw: Error('yikes')"
+                      );
+            });
+        });
+    });
+
+    describe('with a function that returns a promise that is rejected', function () {
+        describe('with the "not" flag', function () {
+            it('should indicate that the function returned a rejected promise', function () {
+                return expect(
+                    expect(function () {
+                        return expect.promise(function (resolve, reject) {
+                            setTimeout(function () {
+                                reject(new Error('wat'));
+                            }, 1);
+                        });
+                    }, 'not to error'),
+                    'to be rejected with',
+                    "expected\n" +
+                        "function () {\n" +
+                        "  return expect.promise(function (resolve, reject) {\n" +
+                        "    setTimeout(function () {\n" +
+                        "      reject(new Error('wat'));\n" +
+                        "    }, 1);\n" +
+                        "  });\n" +
+                        "}\n" +
+                        "not to error\n" +
+                        "  returned promise rejected with: Error('wat')"
+                );
+            });
+        });
+    });
+});

test/unexpected.spec.js

@@ -120,50 +120,6 @@ describe('unexpected', function () {
         });
     });
 
-    describe('to error assertion', function () {
-        describe('with a function that throws', function () {
-            describe('with the "not" flag', function () {
-                it('should indicate that the function threw', function () {
-                    expect(function () {
-                        expect(function () {
-                            throw new Error('yikes');
-                        }, 'not to error');
-                    }, 'to throw',
-                        "expected function () { throw new Error('yikes'); } not to error\n" +
-                        "  threw: Error('yikes')"
-                    );
-                });
-            });
-        });
-
-        describe('with a function that returns a promise that is rejected', function () {
-            describe('with the "not" flag', function () {
-                it('should indicate that the function returned a rejected promise', function () {
-                    return expect(
-                        expect(function () {
-                            return expect.promise(function (resolve, reject) {
-                                setTimeout(function () {
-                                    reject(new Error('wat'));
-                                }, 1);
-                            });
-                        }, 'not to error'),
-                        'to be rejected with',
-                            "expected\n" +
-                            "function () {\n" +
-                            "  return expect.promise(function (resolve, reject) {\n" +
-                            "    setTimeout(function () {\n" +
-                            "      reject(new Error('wat'));\n" +
-                            "    }, 1);\n" +
-                            "  });\n" +
-                            "}\n" +
-                            "not to error\n" +
-                            "  returned promise rejected with: Error('wat')"
-                    );
-                });
-            });
-        });
-    });
-
     describe('object type', function () {
         describe('#diff', function () {
             it('should show identical multiline values correctly in diffs', function () {