Add unit tests for request body

Author: rlakhtakia

pkg/epp/handlers/request_test.go

@@ -74,7 +74,9 @@ func TestHandleRequestBody(t *testing.T) {
 	fakeClient := fake.NewClientBuilder().
 		WithScheme(scheme).
 		Build()
-	ds.PoolSet(ctx, fakeClient, pool)
+	if err := ds.PoolSet(ctx, fakeClient, pool); err != nil {
+		t.Error(err, "Error while setting inference pool")
+	}
 	ds.PodUpdateOrAddIfNotExist(pod)
 
 	tests := []struct {