use original PushRelativePathnameWarning test

Author: thejohnhoffer

packages/history/__tests__/TestSequences/PushRelativePathnameWarning.js

@@ -23,7 +23,9 @@ export default (history, done) => {
 
       history.push('../other/path?another=query#another-hash');
 
-      expect(spy).toHaveBeenCalled();
+      expect(spy).toHaveBeenCalledWith(
+        expect.stringContaining('relative pathnames are not supported')
+      );
 
       destroy();
     },

packages/history/index.ts

@@ -599,10 +599,6 @@ export function createHashHistory(
     return parsePath(pathname.replace('/', hashRoot));
   }
 
-  function validateLocation({pathname}) {
-    return pathname === parsePathOutput(pathname)
-  }
-
   function getIndexAndLocation(): [number, Location] {
     let {
       pathname = '/',
@@ -752,8 +748,8 @@ export function createHashHistory(
     }
 
     warning(
-      validateLocation(nextLocation),
-      `Locations must start with "${hashRoot}" in hash history.push(${JSON.stringify(
+      nextLocation.pathname.charAt(0) === '/',
+      `Relative pathnames are not supported in hash history.push(${JSON.stringify(
         to
       )})`
     );
@@ -783,8 +779,8 @@ export function createHashHistory(
     }
 
     warning(
-      validateLocation(nextLocation),
-      `Locations must start with "${hashRoot}" in hash history.replace(${JSON.stringify(
+      nextLocation.pathname.charAt(0) === '/',
+      `Relative pathnames are not supported in hash history.replace(${JSON.stringify(
         to
       )})`
     );