diff --git a/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/ContractAgreementToContractAgreementDtoTransformerTest.java b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/ContractAgreementToContractAgreementDtoTransformerTest.java
new file mode 100644
index 000000000..49904434c
--- /dev/null
+++ b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/ContractAgreementToContractAgreementDtoTransformerTest.java
@@ -0,0 +1,34 @@
+package de.sovity.edc.ext.wrapper.api.usecase.transformer;
+
+import de.sovity.edc.ext.wrapper.api.common.model.ContractAgreementDto;
+import de.sovity.edc.ext.wrapper.api.common.model.PolicyDto;
+import org.eclipse.edc.connector.contract.spi.types.agreement.ContractAgreement;
+import org.eclipse.edc.policy.model.*;
+import org.eclipse.edc.transform.spi.TransformerContext;
+import org.junit.jupiter.api.Test;
+
+import java.util.HashMap;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+public class ContractAgreementToContractAgreementDtoTransformerTest {
+    private final ContractAgreementToContractAgreementDtoTransformer transformer = new ContractAgreementToContractAgreementDtoTransformer();
+    private final TransformerContext context = mock(TransformerContext.class);
+
+    @Test
+    void types() {
+        assertThat(transformer.getInputType()).isEqualTo(ContractAgreement.class);
+        assertThat(transformer.getOutputType()).isEqualTo(ContractAgreementDto.class);
+    }
+
+    @Test
+    void transform(){
+
+
+
+
+
+
+    }
+}
diff --git a/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/ContractNegotiationToContractNegotiationOutputDtoTransformerTest.java b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/ContractNegotiationToContractNegotiationOutputDtoTransformerTest.java
new file mode 100644
index 000000000..391504b50
--- /dev/null
+++ b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/ContractNegotiationToContractNegotiationOutputDtoTransformerTest.java
@@ -0,0 +1,27 @@
+package de.sovity.edc.ext.wrapper.api.usecase.transformer;
+
+import de.sovity.edc.ext.wrapper.api.common.model.ContractAgreementDto;
+import de.sovity.edc.ext.wrapper.api.usecase.model.ContractNegotiationOutputDto;
+import org.eclipse.edc.connector.contract.spi.types.agreement.ContractAgreement;
+import org.eclipse.edc.connector.contract.spi.types.negotiation.ContractNegotiation;
+import org.eclipse.edc.transform.spi.TransformerContext;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+public class ContractNegotiationToContractNegotiationOutputDtoTransformerTest {
+    private final ContractNegotiationToContractNegotiationOutputDtoTransformer transformer = new ContractNegotiationToContractNegotiationOutputDtoTransformer();
+    private final TransformerContext context = mock(TransformerContext.class);
+
+    @Test
+    void types() {
+        assertThat(transformer.getInputType()).isEqualTo(ContractNegotiation.class);
+        assertThat(transformer.getOutputType()).isEqualTo(ContractNegotiationOutputDto.class);
+    }
+
+    @Test
+    void transform(){
+
+    }
+}
diff --git a/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/DataReqeustToDataRequestDtoTransformerTest.java b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/DataReqeustToDataRequestDtoTransformerTest.java
new file mode 100644
index 000000000..c0e3e2a20
--- /dev/null
+++ b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/DataReqeustToDataRequestDtoTransformerTest.java
@@ -0,0 +1,33 @@
+package de.sovity.edc.ext.wrapper.api.usecase.transformer;
+
+import de.sovity.edc.ext.wrapper.api.usecase.model.ContractNegotiationOutputDto;
+import de.sovity.edc.ext.wrapper.api.usecase.model.DataRequestDto;
+import org.eclipse.edc.connector.contract.spi.types.negotiation.ContractNegotiation;
+import org.eclipse.edc.connector.transfer.spi.types.DataRequest;
+import org.eclipse.edc.transform.spi.TransformerContext;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+public class DataReqeustToDataRequestDtoTransformerTest {
+
+    private final DataRequestToDataRequestDtoTransformer transformer = new DataRequestToDataRequestDtoTransformer();
+    private final TransformerContext context = mock(TransformerContext.class);
+
+    @Test
+    void types() {
+        assertThat(transformer.getInputType()).isEqualTo(DataRequest.class);
+        assertThat(transformer.getOutputType()).isEqualTo(DataRequestDto.class);
+    }
+
+    @Test
+    void transform(){
+
+
+
+
+
+
+    }
+}
diff --git a/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/PermissionToPermissionDtoTransformerTest.java b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/PermissionToPermissionDtoTransformerTest.java
new file mode 100644
index 000000000..661c417d3
--- /dev/null
+++ b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/PermissionToPermissionDtoTransformerTest.java
@@ -0,0 +1,28 @@
+package de.sovity.edc.ext.wrapper.api.usecase.transformer;
+
+import de.sovity.edc.ext.wrapper.api.common.model.PermissionDto;
+import de.sovity.edc.ext.wrapper.api.usecase.model.ContractNegotiationOutputDto;
+import org.eclipse.edc.connector.contract.spi.types.negotiation.ContractNegotiation;
+import org.eclipse.edc.policy.model.Permission;
+import org.eclipse.edc.transform.spi.TransformerContext;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+public class PermissionToPermissionDtoTransformerTest {
+
+    private final PermissionToPermissionDtoTransformer transformer = new PermissionToPermissionDtoTransformer();
+    private final TransformerContext context = mock(TransformerContext.class);
+
+    @Test
+    void types() {
+        assertThat(transformer.getInputType()).isEqualTo(Permission.class);
+        assertThat(transformer.getOutputType()).isEqualTo(PermissionDto.class);
+    }
+
+    @Test
+    void transform(){
+
+    }
+}
diff --git a/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/PolicyToPolicyDtoTransformerTest.java b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/PolicyToPolicyDtoTransformerTest.java
new file mode 100644
index 000000000..98ba99fae
--- /dev/null
+++ b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/PolicyToPolicyDtoTransformerTest.java
@@ -0,0 +1,57 @@
+package de.sovity.edc.ext.wrapper.api.usecase.transformer;
+
+import de.sovity.edc.ext.wrapper.api.common.model.PolicyDto;
+import org.eclipse.edc.policy.model.*;
+import org.eclipse.edc.transform.spi.TransformerContext;
+import org.junit.jupiter.api.Test;
+
+import java.util.HashMap;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
+public class PolicyToPolicyDtoTransformerTest {
+
+    private final PolicyToPolicyDtoTransformer transformer = new PolicyToPolicyDtoTransformer();
+    private final TransformerContext context = mock(TransformerContext.class);
+
+    @Test
+    void types() {
+        assertThat(transformer.getInputType()).isEqualTo(Policy.class);
+        assertThat(transformer.getOutputType()).isEqualTo(PolicyDto.class);
+    }
+
+    @Test
+    void transform(){
+
+        var target = "target-id";
+        var permission = Permission.Builder.newInstance().action(Action.Builder.newInstance().type("USE").build()).build();
+        var prohibition = Prohibition.Builder.newInstance().action(Action.Builder.newInstance().type("MODIFY").build()).build();
+        var duty = Duty.Builder.newInstance().action(Action.Builder.newInstance().type("DELETE").build()).build();
+        var policy = Policy.Builder.newInstance()
+                .permission(permission)
+                .prohibition(prohibition)
+                .duty(duty)
+                .assigner("assigner")
+                .assignee("assignee")
+                .inheritsFrom("inheritsFroms")
+                .type(PolicyType.SET)
+                .extensibleProperties(new HashMap<>())
+                .build();
+
+        var result = transformer.transform(policy,context);
+        //var permissionDto  = result.getPermission();
+
+
+
+
+        assertThat(result).isNotNull();
+        assertThat(result.getPermission()).isNotNull();
+        assertThat(result.getPermission().getConstraints()).isNotNull();
+
+
+
+
+    }
+}
diff --git a/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/TransferProcessToTransferProcessOutputDtoTransformerTest.java b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/TransferProcessToTransferProcessOutputDtoTransformerTest.java
new file mode 100644
index 000000000..64fad4ead
--- /dev/null
+++ b/extensions/wrapper/wrapper/src/test/java/de/sovity/edc/ext/wrapper/api/usecase/transformer/TransferProcessToTransferProcessOutputDtoTransformerTest.java
@@ -0,0 +1,29 @@
+package de.sovity.edc.ext.wrapper.api.usecase.transformer;
+
+import de.sovity.edc.ext.wrapper.api.common.model.PermissionDto;
+import de.sovity.edc.ext.wrapper.api.usecase.model.TransferProcessOutputDto;
+import org.eclipse.edc.connector.transfer.spi.types.TransferProcess;
+import org.eclipse.edc.policy.model.Permission;
+import org.eclipse.edc.transform.spi.TransformerContext;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+public class TransferProcessToTransferProcessOutputDtoTransformerTest {
+
+    private final TransferProcessToTransferProcessOutputDtoTransformer transformer = new TransferProcessToTransferProcessOutputDtoTransformer();
+    private final TransformerContext context = mock(TransformerContext.class);
+
+    @Test
+    void types() {
+        assertThat(transformer.getInputType()).isEqualTo(TransferProcess.class);
+        assertThat(transformer.getOutputType()).isEqualTo(TransferProcessOutputDto.class);
+    }
+
+    @Test
+    void transform(){
+
+    }
+
+}