Fix GenericApplicationContextTests on Microsoft Windows

The tests introduced in commit 9868c28 pass on Mac OS and Linux but
fail on Microsoft Windows.

This commit updates the tests so that they pass on MS Windows as well.

See gh-28703
Closes gh-28746

Author: jasonjiang9527

spring-context/src/test/java/org/springframework/context/support/GenericApplicationContextTests.java

@@ -237,10 +237,11 @@ private void assertGetResourceSemantics(ResourceLoader resourceLoader, Class<? e
 			context.setResourceLoader(resourceLoader);
 		}
 
+		String relativePathLocation = "foo";
 		String pingLocation = "ping:foo";
 		String fileLocation = "file:foo";
 
-		Resource resource = context.getResource(pingLocation);
+		Resource resource = context.getResource(relativePathLocation);
 		assertThat(resource).isInstanceOf(defaultResourceType);
 		resource = context.getResource(fileLocation);
 		assertThat(resource).isInstanceOf(FileUrlResource.class);
@@ -251,6 +252,9 @@ private void assertGetResourceSemantics(ResourceLoader resourceLoader, Class<? e
 		assertThat(resource).asInstanceOf(type(ByteArrayResource.class))
 			.extracting(bar -> new String(bar.getByteArray(), UTF_8))
 			.isEqualTo("pong:foo");
+
+		resource = context.getResource(relativePathLocation);
+		assertThat(resource).isInstanceOf(defaultResourceType);
 		resource = context.getResource(fileLocation);
 		assertThat(resource).isInstanceOf(FileUrlResource.class);
 	}