Improved specs for async matcher error messages

spec/core/matchers/async/toBePendingSpec.js

@@ -39,7 +39,7 @@ describe('toBePending', function() {
     }
 
     expect(f).toThrowError(
-      `Expected toBePending to be called on a promise but was on a ${typeof actual}.`
+      'Expected toBePending to be called on a promise but was on a string.'
     );
   });
 });

spec/core/matchers/async/toBeRejectedSpec.js

@@ -29,7 +29,7 @@ describe('toBeRejected', function() {
     }
 
     expect(f).toThrowError(
-      `Expected toBeRejected to be called on a promise but was on a ${typeof actual}.`
+      'Expected toBeRejected to be called on a promise but was on a string.'
     );
   });
 });

spec/core/matchers/async/toBeRejectedWithErrorSpec.js

@@ -232,7 +232,7 @@ describe('#toBeRejectedWithError', function() {
     }
 
     expect(f).toThrowError(
-      `Expected toBeRejectedWithError to be called on a promise but was on a ${typeof actual}.`
+      'Expected toBeRejectedWithError to be called on a promise but was on a string.'
     );
   });
 });

spec/core/matchers/async/toBeRejectedWithSpec.js

@@ -83,7 +83,7 @@ describe('#toBeRejectedWith', function() {
     }
 
     expect(f).toThrowError(
-      `Expected toBeRejectedWith to be called on a promise but was on a ${typeof actual}.`
+      'Expected toBeRejectedWith to be called on a promise but was on a string.'
     );
   });
 });

spec/core/matchers/async/toBeResolvedSpec.js

@@ -36,7 +36,7 @@ describe('toBeResolved', function() {
     }
 
     expect(f).toThrowError(
-      `Expected toBeResolved to be called on a promise but was on a ${typeof actual}.`
+      'Expected toBeResolved to be called on a promise but was on a string.'
     );
   });
 });

spec/core/matchers/async/toBeResolvedToSpec.js

@@ -93,7 +93,7 @@ describe('#toBeResolvedTo', function() {
     }
 
     expect(f).toThrowError(
-      `Expected toBeResolvedTo to be called on a promise but was on a ${typeof actual}.`
+      'Expected toBeResolvedTo to be called on a promise but was on a string.'
     );
   });
 });