client: Fix mediaType MIME code (FINERACT-1218)

fineract-client/src/main/java/org/apache/fineract/client/util/Parts.java

@@ -33,24 +33,26 @@ public final class Parts {
     private Parts() {}
 
     public static Part fromFile(File file) {
-        RequestBody rb = RequestBody.create(file, getMediaType(file.getName()));
+        RequestBody rb = RequestBody.create(file, mediaType(file.getName()));
         return Part.createFormData("file", file.getName(), rb);
     }
 
     public static Part fromFile(String fileName, byte[] bytes) {
-        RequestBody rb = RequestBody.create(bytes, getMediaType(fileName));
+        RequestBody rb = RequestBody.create(bytes, mediaType(fileName));
         return Part.createFormData("file", fileName, rb);
     }
 
+    // package local, for unit testing
     // TODO this logic should be on the Server, not have to be done by the client...
-    // There actually does seem to be some code related to MIME type guessing in Fineract, but test shows it doesn't
-    // work :(
-    private static MediaType getMediaType(String fileName) {
+    static MediaType mediaType(String fileName) {
+        if (fileName == null) {
+            return null;
+        }
         int dotPos = fileName.lastIndexOf('.');
         if (dotPos == -1) {
             return null;
         }
-        String ext = fileName.substring(dotPos);
+        String ext = fileName.substring(dotPos + 1);
         // https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types
         switch (ext) {
             case "jpg":

fineract-client/src/test/java/org/apache/fineract/client/util/PartsTest.java

@@ -0,0 +1,46 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.fineract.client.util;
+
+import com.google.common.truth.Truth;
+import okhttp3.MediaType;
+import org.junit.jupiter.api.Test;
+
+public class PartsTest {
+
+    @Test
+    void validMediaType() {
+        Truth.assertThat(Parts.mediaType("test.jpg")).isEqualTo(MediaType.get("image/jpeg"));
+    }
+
+    @Test
+    void dotMediaType() {
+        Truth.assertThat(Parts.mediaType("test.")).isNull();
+    }
+
+    @Test
+    void emptyMediaType() {
+        Truth.assertThat(Parts.mediaType("")).isNull();
+    }
+
+    @Test
+    void nullMediaType() {
+        Truth.assertThat(Parts.mediaType(null)).isNull();
+    }
+}

fineract-client/src/test/java/org/apache/fineract/integrationtests/newstyle/DocumentTest.java

@@ -49,7 +49,7 @@ public class DocumentTest extends IntegrationTest {
 
     @Test
     @Order(2)
-    void createDocument() throws IOException {
+    void createDocument() {
         String name = "Test";
         Part part = Parts.fromFile(testFile);
         String description = null;
@@ -63,7 +63,7 @@ public class DocumentTest extends IntegrationTest {
 
     @Test
     @Order(3)
-    void getDocument() throws IOException {
+    void getDocument() {
         GetEntityTypeEntityIdDocumentsResponse doc = ok(fineract().documents.getDocument("clients", clientId, documentId));
         assertThat(doc.getName()).isEqualTo("Test");
         assertThat(doc.getFileName()).isEqualTo(testFile.getName());
@@ -72,9 +72,8 @@ public class DocumentTest extends IntegrationTest {
         assertThat(doc.getParentEntityType()).isEqualTo("clients");
         assertThat(doc.getParentEntityId()).isEqualTo(clientId);
         // TODO huh?! It's more than uploaded file; seems like a bug - it's including create body, not just file size
-        assertThat(doc.getSize()).isEqualTo(testFile.length() + 385);
-        // TODO huh?! MIME is always text/plain instead of image/jpeg... :(
-        assertThat(doc.getType()).isEqualTo("text/plain");
+        assertThat(doc.getSize()).isEqualTo(testFile.length() + 411);
+        assertThat(doc.getType()).isEqualTo("image/jpeg");
         // TODO doc.getStorageType() shouldn't be exposed by the API?!
     }
 
@@ -82,15 +81,14 @@ public class DocumentTest extends IntegrationTest {
     @Order(4)
     void downloadFile() throws IOException {
         ResponseBody r = ok(fineract().documents.downloadFile("clients", clientId, documentId));
-        assertThat(r.contentType()).isEqualTo(MediaType.get("text/plain")); // TODO wrong, bug; needs to be "image/jpeg"
-                                                                            // (as above)
+        assertThat(r.contentType()).isEqualTo(MediaType.get("image/jpeg"));
         assertThat(r.bytes().length).isEqualTo(testFile.length());
         // NOK: assertThat(r.contentLength()).isEqualTo(testFile.length());
     }
 
     @Test
     @Order(10)
-    void updateDocument() throws IOException {
+    void updateDocument() {
         String newName = "Test changed name";
         String newDescription = getClass().getName();
         ok(fineract().documents.updateDocument("clients", clientId, documentId, null, newName, newDescription));