diff --git a/src/test/java/toolbox/Main.java b/src/test/java/toolbox/Main.java
index 68365a7..c30dcbf 100644
--- a/src/test/java/toolbox/Main.java
+++ b/src/test/java/toolbox/Main.java
@@ -14,6 +14,7 @@ public class Main {
 	static native String concat(String a, String b);
 	static native String[] to_vec(String a, String b, String c);
 	static native boolean maybe(String optional);
+	static native String raw();
 
 	@Test
 	public void argumentsByValue() {
@@ -47,5 +48,10 @@ public class Main {
 		assertEquals(Main.maybe(null), false);
 		assertEquals(Main.maybe("aa"), true);
 	}
+
+	@Test
+	public void passEnv() {
+		assertEquals(Main.raw(), "hello world!");
+	}
 	
 }
diff --git a/src/test/test.rs b/src/test/test.rs
index 4511549..ab10f52 100644
--- a/src/test/test.rs
+++ b/src/test/test.rs
@@ -19,3 +19,8 @@ fn to_vec(a: String, b: String, c: String) -> Vec<String> {
 fn maybe(idk: Option<String>) -> bool {
 	idk.is_some()
 }
+
+#[jni(package = "toolbox", class = "Main")]
+fn raw<'local>(env: &mut jni::JNIEnv<'local>) -> Result<jni::objects::JString<'local>, jni::errors::Error> {
+	env.new_string("hello world!")
+}