android ReflectionUtils tests

android/app/src/main/java/com/reactnativenavigation/utils/ReflectionUtils.java

@@ -5,7 +5,6 @@ import android.support.annotation.Nullable;
 import java.lang.reflect.Field;
 
 public class ReflectionUtils {
-
 	public static void setField(Object obj, String name, Object value) {
 		try {
 			Field field = getField(obj.getClass(), name);

android/app/src/test/java/com/reactnativenavigation/utils/ReflectionUtilsTest.java

@@ -0,0 +1,26 @@
+package com.reactnativenavigation.utils;
+
+import com.reactnativenavigation.BaseTest;
+
+import org.junit.Test;
+
+import static org.assertj.core.api.Java6Assertions.assertThat;
+
+public class ReflectionUtilsTest extends BaseTest {
+
+	static class Foo {
+		private String bar = "old value";
+	}
+
+	@Test
+	public void setField() throws Exception {
+		Foo target = new Foo();
+		ReflectionUtils.setField(target, "bar", "a new value");
+		assertThat(target.bar).isEqualTo("a new value");
+	}
+
+	@Test
+	public void getDeclaredField() throws Exception {
+		assertThat(ReflectionUtils.getDeclaredField(new Foo(), "bar")).isEqualTo("old value");
+	}
+}