fix: class cast exception when uploading large file (#1174)

Closes #1173
Co-authored-by: Kamil Berdychowski <kberdychowski@box.com>

Author: mhagmajer

src/main/java/com/box/sdk/BoxAPIResponse.java

@@ -43,7 +43,6 @@ public class BoxAPIResponse implements Closeable {
     private final String contentType;
     private final String requestMethod;
     private final String requestUrl;
-
     private int responseCode;
     private String bodyString;
 
@@ -320,4 +319,12 @@ private void logErrorResponse(int responseCode) {
             LOGGER.error(this.toString());
         }
     }
+
+    protected String getRequestMethod() {
+        return requestMethod;
+    }
+
+    protected String getRequestUrl() {
+        return requestUrl;
+    }
 }

src/main/java/com/box/sdk/BoxJSONRequest.java

@@ -98,12 +98,20 @@ public JsonValue getBodyAsJsonValue() {
 
     @Override
     public BoxJSONResponse send() {
-        return (BoxJSONResponse) super.send();
+        return convert(super.send());
     }
 
     @Override
     public BoxJSONResponse send(ProgressListener listener) {
-        return (BoxJSONResponse) super.send(listener);
+        return convert(super.send(listener));
+    }
+
+    private BoxJSONResponse convert(BoxAPIResponse response) {
+        if (response instanceof BoxJSONResponse) {
+            return (BoxJSONResponse) response;
+        } else {
+            return new BoxJSONResponse(response);
+        }
     }
 
     @Override

src/main/java/com/box/sdk/BoxJSONResponse.java

@@ -25,6 +25,16 @@ public BoxJSONResponse() {
         super();
     }
 
+    BoxJSONResponse(BoxAPIResponse response) {
+        this(
+            response.getResponseCode(),
+            response.getRequestMethod(),
+            response.getRequestUrl(),
+            response.getHeaders(),
+            new JsonObject()
+        );
+    }
+
     /**
      * Constructs a BoxAPIResponse with an http response code and response body.
      *

src/test/java/com/box/sdk/BoxJSONRequestTest.java

@@ -0,0 +1,45 @@
+package com.box.sdk;
+
+import static com.box.sdk.TestUtils.createConnectionWith;
+import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
+import static com.github.tomakehurst.wiremock.client.WireMock.get;
+import static com.github.tomakehurst.wiremock.client.WireMock.stubFor;
+import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
+import static com.github.tomakehurst.wiremock.core.WireMockConfiguration.wireMockConfig;
+import static java.lang.String.format;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.core.Is.is;
+import static org.mockito.Mockito.mock;
+
+import com.github.tomakehurst.wiremock.junit.WireMockRule;
+import java.net.MalformedURLException;
+import java.net.URL;
+import org.junit.Rule;
+import org.junit.Test;
+
+public class BoxJSONRequestTest {
+    @Rule
+    public WireMockRule wireMockRule = new WireMockRule(wireMockConfig().dynamicHttpsPort().httpDisabled(true));
+
+    @Test
+    public void shouldHandleApiResponse() {
+        stubFor(get(urlEqualTo("/")).willReturn(aResponse().withStatus(202)));
+        Time mockTime = mock(Time.class);
+        BackoffCounter backoffCounter = new BackoffCounter(mockTime);
+
+        BoxAPIConnection api = createConnectionWith(boxMockUrl().toString());
+        BoxJSONRequest request = new BoxJSONRequest(api, boxMockUrl(), "GET");
+        request.setBackoffCounter(backoffCounter);
+
+        BoxJSONResponse response = request.send();
+        assertThat(response.getResponseCode(), is(202));
+    }
+
+    private URL boxMockUrl() {
+        try {
+            return new URL(format("https://localhost:%d/", wireMockRule.httpsPort()));
+        } catch (MalformedURLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}