diff --git a/jni_test.go b/jni_test.go
index 1685fb7..8301719 100644
--- a/jni_test.go
+++ b/jni_test.go
@@ -9,7 +9,7 @@ import (
 )
 
 var (
-	vm JVM
+	vm     JVM
 	vmOnce sync.Once
 )
 
@@ -145,6 +145,167 @@ func TestIntMethod(t *testing.T) {
 	}
 }
 
+func TestBooleanMethod(t *testing.T) {
+	err := Do(vm, func(env Env) error {
+		cls := FindClass(env, "test/AClass")
+		mid := GetMethodID(env, cls, "<init>", "()V")
+		inst, err := NewObject(env, cls, mid)
+		mid = GetMethodID(env, cls, "GetBoolean", "()Z")
+		if mid == nil {
+			t.Errorf("MethodID is nil")
+		}
+		res, err := CallBooleanMethod(env, inst, mid)
+		if err != nil {
+			t.Errorf("Method invocation failed")
+		}
+		if !res {
+			t.Errorf("Method returned %v, not expected value of %v.", res, true)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Errorf("Error: %s", err)
+	}
+}
+
+func TestByteMethod(t *testing.T) {
+	err := Do(vm, func(env Env) error {
+		cls := FindClass(env, "test/AClass")
+		mid := GetMethodID(env, cls, "<init>", "()V")
+		inst, err := NewObject(env, cls, mid)
+		mid = GetMethodID(env, cls, "GetByte", "()B")
+		if mid == nil {
+			t.Errorf("MethodID is nil")
+		}
+		res, err := CallByteMethod(env, inst, mid)
+		if err != nil {
+			t.Errorf("Method invocation failed")
+		}
+		if res != 127 {
+			t.Errorf("Method returned %d, not expected value of %d.", res, 127)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Errorf("Error: %s", err)
+	}
+}
+
+func TestCharMethod(t *testing.T) {
+	err := Do(vm, func(env Env) error {
+		cls := FindClass(env, "test/AClass")
+		mid := GetMethodID(env, cls, "<init>", "()V")
+		inst, err := NewObject(env, cls, mid)
+		mid = GetMethodID(env, cls, "GetChar", "()C")
+		if mid == nil {
+			t.Errorf("MethodID is nil")
+		}
+		res, err := CallCharMethod(env, inst, mid)
+		if err != nil {
+			t.Errorf("Method invocation failed")
+		}
+		if res != 65432 {
+			t.Errorf("Method returned %d, not expected value of %d.", res, 65432)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Errorf("Error: %s", err)
+	}
+}
+
+func TestShortMethod(t *testing.T) {
+	err := Do(vm, func(env Env) error {
+		cls := FindClass(env, "test/AClass")
+		mid := GetMethodID(env, cls, "<init>", "()V")
+		inst, err := NewObject(env, cls, mid)
+		mid = GetMethodID(env, cls, "GetShort", "()S")
+		if mid == nil {
+			t.Errorf("MethodID is nil")
+		}
+		res, err := CallShortMethod(env, inst, mid)
+		if err != nil {
+			t.Errorf("Method invocation failed")
+		}
+		if res != 512 {
+			t.Errorf("Method returned %d, not expected value of %d.", res, 512)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Errorf("Error: %s", err)
+	}
+}
+
+func TestLongMethod(t *testing.T) {
+	err := Do(vm, func(env Env) error {
+		cls := FindClass(env, "test/AClass")
+		mid := GetMethodID(env, cls, "<init>", "()V")
+		inst, err := NewObject(env, cls, mid)
+		mid = GetMethodID(env, cls, "GetLong", "()J")
+		if mid == nil {
+			t.Errorf("MethodID is nil")
+		}
+		res, err := CallLongMethod(env, inst, mid)
+		if err != nil {
+			t.Errorf("Method invocation failed")
+		}
+		if res != 1<<33 {
+			t.Errorf("Method returned %d, not expected value of %d.", res, 1<<33)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Errorf("Error: %s", err)
+	}
+}
+
+func TestFloatMethod(t *testing.T) {
+	err := Do(vm, func(env Env) error {
+		cls := FindClass(env, "test/AClass")
+		mid := GetMethodID(env, cls, "<init>", "()V")
+		inst, err := NewObject(env, cls, mid)
+		mid = GetMethodID(env, cls, "GetFloat", "()F")
+		if mid == nil {
+			t.Errorf("MethodID is nil")
+		}
+		res, err := CallFloatMethod(env, inst, mid)
+		if err != nil {
+			t.Errorf("Method invocation failed")
+		}
+		if res != 4.321 {
+			t.Errorf("Method returned %f, not expected value of %f.", res, 4.321)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Errorf("Error: %s", err)
+	}
+}
+
+func TestDoubleMethod(t *testing.T) {
+	err := Do(vm, func(env Env) error {
+		cls := FindClass(env, "test/AClass")
+		mid := GetMethodID(env, cls, "<init>", "()V")
+		inst, err := NewObject(env, cls, mid)
+		mid = GetMethodID(env, cls, "GetDouble", "()D")
+		if mid == nil {
+			t.Errorf("MethodID is nil")
+		}
+		res, err := CallDoubleMethod(env, inst, mid)
+		if err != nil {
+			t.Errorf("Method invocation failed")
+		}
+		if res != 5.4321 {
+			t.Errorf("Method returned %f, not expected value of %f.", res, 5.4321)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Errorf("Error: %s", err)
+	}
+}
+
 func TestVoidMethod(t *testing.T) {
 	err := Do(vm, func(env Env) error {
 		cls := FindClass(env, "test/AClass")
diff --git a/test/AClass.class b/test/AClass.class
index b7a71a5..608a39e 100644
Binary files a/test/AClass.class and b/test/AClass.class differ
diff --git a/test/AClass.java b/test/AClass.java
index 4ea82d6..f5a8fd9 100644
--- a/test/AClass.java
+++ b/test/AClass.java
@@ -21,6 +21,34 @@ public class AClass {
 		return intval;
 	}
 
+	public boolean GetBoolean() {
+    	return true;
+	}
+
+	public byte GetByte() {
+    	return 127;
+	}
+
+	public char GetChar() {
+    	return 65432;
+	}
+
+	public short GetShort() {
+    	return 512;
+	}
+
+	public long GetLong() {
+    	return 1L<<33;
+	}
+
+	public float GetFloat() {
+    	return 4.321f;
+	}
+
+	public double GetDouble() {
+    	return 5.4321;
+	}
+
 	public void SetInt(int val) {
 		intval = val;
 	}