Added some tests

src/test/java/nl/sander/beejava/ConstantPoolUniquenessTests.java

@@ -0,0 +1,13 @@
+package nl.sander.beejava;
+
+import nl.sander.beejava.api.BeeClass;
+import org.junit.jupiter.api.Test;
+
+public class ConstantPoolUniquenessTests {
+    @Test
+    public void test(){
+        BeeClass someClass = TestData.createClassWithTwoReferencesToSomeClass();
+        CompiledClass compiledClass = Compiler.compile(someClass);
+        BytecodeGenerator.generate(compiledClass);
+    }
+}

src/test/java/nl/sander/beejava/TestData.java

@@ -34,6 +34,26 @@ public class TestData {
                 .build();
     }
 
+    public static BeeClass createClassWithTwoReferencesToSomeClass() {
+        BeeMethod print1 = BeeMethod.builder()
+                .withAccessFlags(MethodAccessFlag.PUBLIC)
+                .withCode(
+                        line(0, GET, "java.lang.System","out"),
+                        line(1, LD_CONST, "1"),
+                        line(2, INVOKE, "java.io.PrintStream", "println", "(java.lang.String)"),
+                        line(3, RETURN))
+                .build();
+
+        return BeeClass.builder()
+                .withClassFileVersion(Version.V14)
+                .withPackage("nl.sander.beejava.test")
+                .withAccessFlags(PUBLIC)
+                .withSimpleName("ClassWithReferences")
+                .withConstructors(createConstructor()) // There's no default constructor in beejava. The user must always add them
+                .withMethods(print1)
+                .build();
+    }
+
     public static BeeClass createClassWithIntField() {
         BeeField intField = BeeField.builder()
                 .withAccessFlags(FieldAccessFlag.PRIVATE)
@@ -47,10 +67,10 @@ public class TestData {
                 .withAccessFlags(MethodAccessFlag.PUBLIC)
                 .withFormalParameters(intValueParameter)
                 .withCode(
-                        line(0, LOAD, Ref.THIS),
+                        line(0, LD_VAR, Ref.THIS),
                         line(1, INVOKE, Ref.SUPER, "<init>", "()"),
-                        line(2, LOAD, Ref.THIS),
+                        line(2, LD_VAR, Ref.THIS),
-                        line(3, LOAD, intValueParameter),
+                        line(3, LD_VAR, intValueParameter),
                         line(4, PUT, intField),
                         line(5, RETURN))
                 .build();
@@ -70,7 +90,7 @@ public class TestData {
         return BeeConstructor.builder()
                 .withAccessFlags(MethodAccessFlag.PUBLIC)
                 .withCode(
-                        line(0, LOAD, Ref.THIS),
+                        line(0, LD_VAR, Ref.THIS),
                         line(1, INVOKE, Ref.SUPER, "<init>", "()"),
                         line(5, RETURN))
                 .build();