diff --git a/library/core/src/test/java/com/google/android/exoplayer2/upstream/UdpDataSourceContractTest.java b/library/core/src/test/java/com/google/android/exoplayer2/upstream/UdpDataSourceContractTest.java
index 0dd688fd36..97d611dbec 100644
--- a/library/core/src/test/java/com/google/android/exoplayer2/upstream/UdpDataSourceContractTest.java
+++ b/library/core/src/test/java/com/google/android/exoplayer2/upstream/UdpDataSourceContractTest.java
@@ -75,6 +75,16 @@ public class UdpDataSourceContractTest extends DataSourceContractTest {
   @Override
   public void dataSpecWithPosition_readUntilEnd() {}
 
+  @Test
+  @Ignore("UdpDataSource doesn't support DataSpec's position or length [internal: b/175856954]")
+  @Override
+  public void dataSpecWithLength_readExpectedRange() {}
+
+  @Test
+  @Ignore("UdpDataSource doesn't support DataSpec's position or length [internal: b/175856954]")
+  @Override
+  public void dataSpecWithPositionAndLength_readExpectedRange() {}
+
   /**
    * Finds a free UDP port in the range of unreserved ports 50000-60000 that can be used from the
    * test or throws an {@link IllegalStateException} if no port is available.
diff --git a/testutils/src/main/java/com/google/android/exoplayer2/testutil/DataSourceContractTest.java b/testutils/src/main/java/com/google/android/exoplayer2/testutil/DataSourceContractTest.java
index 5fb0472b91..5f5a237124 100644
--- a/testutils/src/main/java/com/google/android/exoplayer2/testutil/DataSourceContractTest.java
+++ b/testutils/src/main/java/com/google/android/exoplayer2/testutil/DataSourceContractTest.java
@@ -127,6 +127,59 @@ public abstract class DataSourceContractTest {
     }
   }
 
+  @Test
+  public void dataSpecWithLength_readExpectedRange() throws Exception {
+    ImmutableList<TestResource> resources = getTestResources();
+    Assertions.checkArgument(!resources.isEmpty(), "Must provide at least one test resource.");
+
+    for (int i = 0; i < resources.size(); i++) {
+      additionalFailureInfo.setInfo(getFailureLabel(resources, i));
+      TestResource resource = resources.get(i);
+      DataSource dataSource = createDataSource();
+      try {
+        long length =
+            dataSource.open(new DataSpec.Builder().setUri(resource.getUri()).setLength(4).build());
+        byte[] data = readToEnd(dataSource, resource);
+
+        assertThat(length).isEqualTo(4);
+        byte[] expectedData = Arrays.copyOf(resource.getExpectedBytes(), 4);
+        assertThat(data).isEqualTo(expectedData);
+      } finally {
+        dataSource.close();
+      }
+      additionalFailureInfo.setInfo(null);
+    }
+  }
+
+  @Test
+  public void dataSpecWithPositionAndLength_readExpectedRange() throws Exception {
+    ImmutableList<TestResource> resources = getTestResources();
+    Assertions.checkArgument(!resources.isEmpty(), "Must provide at least one test resource.");
+
+    for (int i = 0; i < resources.size(); i++) {
+      additionalFailureInfo.setInfo(getFailureLabel(resources, i));
+      TestResource resource = resources.get(i);
+      DataSource dataSource = createDataSource();
+      try {
+        long length =
+            dataSource.open(
+                new DataSpec.Builder()
+                    .setUri(resource.getUri())
+                    .setPosition(2)
+                    .setLength(2)
+                    .build());
+        byte[] data = readToEnd(dataSource, resource);
+
+        assertThat(length).isEqualTo(2);
+        byte[] expectedData = Arrays.copyOfRange(resource.getExpectedBytes(), 2, 4);
+        assertThat(data).isEqualTo(expectedData);
+      } finally {
+        dataSource.close();
+      }
+      additionalFailureInfo.setInfo(null);
+    }
+  }
+
   @Test
   public void resourceNotFound() throws Exception {
     DataSource dataSource = createDataSource();