Support custom HTTP status in MockClientHttpResponse

See gh-28105

spring-test/src/main/java/org/springframework/mock/http/client/MockClientHttpResponse.java

@@ -32,7 +32,7 @@
  */
 public class MockClientHttpResponse extends MockHttpInputMessage implements ClientHttpResponse {
 
-	private final HttpStatus status;
+	private final Object status;
 
 
 	/**
@@ -44,6 +44,14 @@ public MockClientHttpResponse(byte[] body, HttpStatus statusCode) {
 		this.status = statusCode;
 	}
 
+	/**
+	 * Constructor with response body as a byte array.
+	 */
+	public MockClientHttpResponse(byte[] body, int statusCode) {
+		super(body);
+		this.status = statusCode;
+	}
+
 	/**
 	 * Constructor with response body as InputStream.
 	 */
@@ -53,20 +61,43 @@ public MockClientHttpResponse(InputStream body, HttpStatus statusCode) {
 		this.status = statusCode;
 	}
 
+	/**
+	 * Constructor with response body as InputStream.
+	 */
+	public MockClientHttpResponse(InputStream body, int statusCode) {
+		super(body);
+		this.status = statusCode;
+	}
+
 
 	@Override
 	public HttpStatus getStatusCode() throws IOException {
-		return this.status;
+		if (this.status instanceof HttpStatus) {
+			return (HttpStatus) this.status;
+		}
+		else {
+			return HttpStatus.valueOf((Integer) this.status);
+		}
 	}
 
 	@Override
 	public int getRawStatusCode() throws IOException {
-		return this.status.value();
+		if (this.status instanceof HttpStatus) {
+			return ((HttpStatus) this.status).value();
+		}
+		else {
+			return (Integer) this.status;
+		}
 	}
 
 	@Override
 	public String getStatusText() throws IOException {
-		return this.status.getReasonPhrase();
+		if (this.status instanceof HttpStatus) {
+			return ((HttpStatus) this.status).getReasonPhrase();
+		}
+		else {
+			return "Custom http status";
+		}
 	}
 
 	@Override

spring-test/src/main/java/org/springframework/test/web/client/response/DefaultResponseCreator.java

@@ -40,7 +40,7 @@
  */
 public class DefaultResponseCreator implements ResponseCreator {
 
-	private HttpStatus statusCode;
+	private final Object statusCode;
 
 	private byte[] content = new byte[0];
 
@@ -59,6 +59,14 @@ protected DefaultResponseCreator(HttpStatus statusCode) {
 		this.statusCode = statusCode;
 	}
 
+	/**
+	 * Protected constructor.
+	 * Use static factory methods in {@link MockRestResponseCreators}.
+	 */
+	protected DefaultResponseCreator(int statusCode) {
+		this.statusCode = statusCode;
+	}
+
 
 	/**
 	 * Set the body as a UTF-8 String.
@@ -114,10 +122,20 @@ public ClientHttpResponse createResponse(@Nullable ClientHttpRequest request) th
 		MockClientHttpResponse response;
 		if (this.contentResource != null) {
 			InputStream stream = this.contentResource.getInputStream();
-			response = new MockClientHttpResponse(stream, this.statusCode);
+			if (this.statusCode instanceof HttpStatus) {
+				response = new MockClientHttpResponse(stream, (HttpStatus) this.statusCode);
+			}
+			else {
+				response = new MockClientHttpResponse(stream, (Integer) this.statusCode);
+			}
 		}
 		else {
-			response = new MockClientHttpResponse(this.content, this.statusCode);
+			if (this.statusCode instanceof HttpStatus) {
+				response = new MockClientHttpResponse(this.content, (HttpStatus) this.statusCode);
+			}
+			else {
+				response = new MockClientHttpResponse(this.content, (Integer) this.statusCode);
+			}
 		}
 		response.getHeaders().putAll(this.headers);
 		return response;

spring-test/src/main/java/org/springframework/test/web/client/response/MockRestResponseCreators.java

@@ -117,6 +117,14 @@ public static DefaultResponseCreator withStatus(HttpStatus status) {
 		return new DefaultResponseCreator(status);
 	}
 
+	/**
+	 * {@code ResponseCreator} with a specific HTTP status.
+	 * @param status the response status
+	 */
+	public static DefaultResponseCreator withStatus(int status) {
+		return new DefaultResponseCreator(status);
+	}
+
 	/**
 	 * {@code ResponseCreator} with an internal application {@code IOException}.
 	 * <p>For example, one could use this to simulate a {@code SocketTimeoutException}.

spring-test/src/test/java/org/springframework/test/web/client/response/ResponseCreatorsTests.java

@@ -128,6 +128,15 @@ void withStatus() throws Exception {
 		assertThat(StreamUtils.copyToByteArray(response.getBody()).length).isEqualTo(0);
 	}
 
+	@Test
+	void withCustomStatus() throws Exception {
+		DefaultResponseCreator responseCreator = MockRestResponseCreators.withStatus(454);
+		MockClientHttpResponse response = (MockClientHttpResponse) responseCreator.createResponse(null);
+
+		assertThat(response.getRawStatusCode()).isEqualTo(454);
+		assertThat(response.getStatusText()).isEqualTo("Custom http status");
+	}
+
 	@Test
 	void withException() {
 		ResponseCreator responseCreator = MockRestResponseCreators.withException(new SocketTimeoutException());