use common ObjectMapper instance in model unit tests

src/test/java/de/stklcode/jvault/connector/model/AbstractModelTest.java

@@ -1,5 +1,6 @@
 package de.stklcode.jvault.connector.model;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
 import nl.jqno.equalsverifier.EqualsVerifier;
 import org.junit.jupiter.api.Test;
 
@@ -16,6 +17,7 @@ import static org.junit.jupiter.api.Assertions.fail;
  */
 public abstract class AbstractModelTest<T> {
     protected final Class<?> modelClass;
+    protected final ObjectMapper objectMapper;
 
     /**
      * Test case constructor.
@@ -24,6 +26,7 @@ public abstract class AbstractModelTest<T> {
      */
     protected AbstractModelTest(Class<T> modelClass) {
         this.modelClass = modelClass;
+        this.objectMapper = new ObjectMapper();
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/AppRoleSecretTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
 import org.junit.jupiter.api.Test;
 
 import java.lang.reflect.Field;
@@ -116,16 +115,14 @@ class AppRoleSecretTest extends AbstractModelTest<AppRoleSecret> {
      */
     @Test
     void jsonTest() throws NoSuchFieldException, IllegalAccessException {
-        ObjectMapper mapper = new ObjectMapper();
-
         // A simple roundtrip first. All set fields should be present afterwards..
         AppRoleSecret secret = new AppRoleSecret(TEST_ID, TEST_META, TEST_CIDR);
-        String secretJson = assertDoesNotThrow(() -> mapper.writeValueAsString(secret), "Serialization failed");
+        String secretJson = assertDoesNotThrow(() -> objectMapper.writeValueAsString(secret), "Serialization failed");
         // CIDR list is comma-separated when used as input, but List otherwise, hence convert string to list.
         String secretJson2 = commaSeparatedToList(secretJson);
 
         AppRoleSecret secret2 = assertDoesNotThrow(
-                () -> mapper.readValue(secretJson2, AppRoleSecret.class),
+                () -> objectMapper.readValue(secretJson2, AppRoleSecret.class),
                 "Deserialization failed"
         );
         assertEquals(secret2.getId(), secret.getId());
@@ -145,9 +142,9 @@ class AppRoleSecretTest extends AbstractModelTest<AppRoleSecret> {
         assumeTrue(secret.getNumUses() == 678);
         setPrivateField(secret, "ttl", 12345);
         assumeTrue(secret.getTtl() == 12345);
-        String secretJson3 = assertDoesNotThrow(() -> mapper.writeValueAsString(secret), "Serialization failed");
+        String secretJson3 = assertDoesNotThrow(() -> objectMapper.writeValueAsString(secret), "Serialization failed");
         secret2 = assertDoesNotThrow(
-                () -> mapper.readValue(commaSeparatedToList(secretJson3), AppRoleSecret.class),
+                () -> objectMapper.readValue(commaSeparatedToList(secretJson3), AppRoleSecret.class),
                 "Deserialization failed"
         );
         assertEquals(secret2.getId(), secret.getId());
@@ -165,7 +162,7 @@ class AppRoleSecretTest extends AbstractModelTest<AppRoleSecret> {
                 "\"cidr_list\":[\"203.0.113.0/24\",\"198.51.100.0/24\"],\"secret_id_accessor\":\"TEST_ACCESSOR\"," +
                 "\"creation_time\":\"TEST_CREATION\",\"expiration_time\":\"TEST_EXPIRATION\"," +
                 "\"last_updated_time\":\"TEST_LASTUPDATE\",\"secret_id_num_uses\":678,\"secret_id_ttl\":12345}";
-        secret2 = assertDoesNotThrow(() -> mapper.readValue(secretJson4, AppRoleSecret.class), "Deserialization failed");
+        secret2 = assertDoesNotThrow(() -> objectMapper.readValue(secretJson4, AppRoleSecret.class), "Deserialization failed");
         assertEquals("TEST_ACCESSOR", secret2.getAccessor());
         assertEquals("TEST_CREATION", secret2.getCreationTime());
         assertEquals("TEST_EXPIRATION", secret2.getExpirationTime());

src/test/java/de/stklcode/jvault/connector/model/AppRoleTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 
@@ -110,7 +109,7 @@ class AppRoleTest extends AbstractModelTest<AppRole> {
         assertNull(role.getTokenType());
 
         // Optional fields should be ignored, so JSON string should only contain role_name.
-        assertEquals(JSON_MIN, new ObjectMapper().writeValueAsString(role));
+        assertEquals(JSON_MIN, objectMapper.writeValueAsString(role));
     }
 
     /**
@@ -137,7 +136,7 @@ class AppRoleTest extends AbstractModelTest<AppRole> {
         assertEquals(TOKEN_TYPE.value(), role.getTokenType());
 
         // Verify that all parameters are included in JSON string.
-        assertEquals(JSON_FULL, new ObjectMapper().writeValueAsString(role));
+        assertEquals(JSON_FULL, objectMapper.writeValueAsString(role));
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/TokenRoleTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import org.junit.jupiter.api.Test;
 
 import java.util.Arrays;
@@ -133,7 +132,7 @@ class TokenRoleTest extends AbstractModelTest<TokenRole> {
         assertNull(role.getTokenType());
 
         // Optional fields should be ignored, so JSON string should be empty.
-        assertEquals("{}", new ObjectMapper().writeValueAsString(role));
+        assertEquals("{}", objectMapper.writeValueAsString(role));
     }
 
     /**
@@ -177,7 +176,7 @@ class TokenRoleTest extends AbstractModelTest<TokenRole> {
         assertEquals(role, new TokenRole());
 
         // Optional fields should be ignored, so JSON string should be empty.
-        assertEquals("{}", new ObjectMapper().writeValueAsString(role));
+        assertEquals("{}", objectMapper.writeValueAsString(role));
     }
 
     /**
@@ -208,6 +207,6 @@ class TokenRoleTest extends AbstractModelTest<TokenRole> {
         assertEquals(TOKEN_TYPE.value(), role.getTokenType());
 
         // Verify that all parameters are included in JSON string.
-        assertEquals(JSON_FULL, new ObjectMapper().writeValueAsString(role));
+        assertEquals(JSON_FULL, objectMapper.writeValueAsString(role));
     }
 }

src/test/java/de/stklcode/jvault/connector/model/TokenTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 
@@ -103,7 +102,7 @@ class TokenTest extends AbstractModelTest<Token> {
         assertNull(token.getEntityAlias());
 
         // Optional fields should be ignored, so JSON string should be empty.
-        assertEquals("{}", new ObjectMapper().writeValueAsString(token));
+        assertEquals("{}", objectMapper.writeValueAsString(token));
 
         // Empty builder should be equal to no-arg construction.
         assertEquals(token, new Token());
@@ -129,7 +128,7 @@ class TokenTest extends AbstractModelTest<Token> {
         assertEquals(PERIOD, token.getPeriod());
 
         // Verify that all parameters are included in JSON string.
-        assertEquals(JSON_FULL, new ObjectMapper().writeValueAsString(token));
+        assertEquals(JSON_FULL, objectMapper.writeValueAsString(token));
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/AppRoleResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import de.stklcode.jvault.connector.model.AppRole;
 import org.junit.jupiter.api.Test;
@@ -69,7 +68,7 @@ class AppRoleResponseTest extends AbstractModelTest<AppRoleResponse> {
     @Override
     protected AppRoleResponse createFull() {
         try {
-            return new ObjectMapper().readValue(RES_JSON, AppRoleResponse.class);
+            return objectMapper.readValue(RES_JSON, AppRoleResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -92,7 +91,7 @@ class AppRoleResponseTest extends AbstractModelTest<AppRoleResponse> {
     @Test
     void jsonRoundtrip() {
         AppRoleResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(RES_JSON, AppRoleResponse.class),
+                () -> objectMapper.readValue(RES_JSON, AppRoleResponse.class),
                 "AuthResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");

src/test/java/de/stklcode/jvault/connector/model/response/AuthMethodsResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import de.stklcode.jvault.connector.model.AuthBackend;
 import de.stklcode.jvault.connector.model.response.embedded.AuthMethod;
@@ -83,7 +82,7 @@ class AuthMethodsResponseTest extends AbstractModelTest<AuthMethodsResponse> {
     @Override
     protected AuthMethodsResponse createFull() {
         try {
-            return new ObjectMapper().readValue(RES_JSON, AuthMethodsResponse.class);
+            return objectMapper.readValue(RES_JSON, AuthMethodsResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -106,7 +105,7 @@ class AuthMethodsResponseTest extends AbstractModelTest<AuthMethodsResponse> {
     @Test
     void jsonRoundtrip() {
         AuthMethodsResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(RES_JSON, AuthMethodsResponse.class),
+                () -> objectMapper.readValue(RES_JSON, AuthMethodsResponse.class),
                 "AuthResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");

src/test/java/de/stklcode/jvault/connector/model/response/AuthResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import de.stklcode.jvault.connector.model.response.embedded.AuthData;
 import org.junit.jupiter.api.Test;
@@ -76,7 +75,7 @@ class AuthResponseTest extends AbstractModelTest<AuthResponse> {
     @Override
     protected AuthResponse createFull() {
         try {
-            return new ObjectMapper().readValue(RES_JSON, AuthResponse.class);
+            return objectMapper.readValue(RES_JSON, AuthResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -89,7 +88,7 @@ class AuthResponseTest extends AbstractModelTest<AuthResponse> {
     @Test
     void jsonRoundtrip() {
         AuthResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(RES_JSON, AuthResponse.class),
+                () -> objectMapper.readValue(RES_JSON, AuthResponse.class),
                 "AuthResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");

src/test/java/de/stklcode/jvault/connector/model/response/CredentialsResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.exception.InvalidResponseException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
@@ -52,7 +51,7 @@ class CredentialsResponseTest extends AbstractModelTest<CredentialsResponse> {
     @Override
     protected CredentialsResponse createFull() {
         try {
-            return new ObjectMapper().readValue(JSON, CredentialsResponse.class);
+            return objectMapper.readValue(JSON, CredentialsResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -72,7 +71,7 @@ class CredentialsResponseTest extends AbstractModelTest<CredentialsResponse> {
         assertNull(res.getPassword(), "Password not present in data map should not return anything");
 
         res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(JSON, CredentialsResponse.class),
+                () -> objectMapper.readValue(JSON, CredentialsResponse.class),
                 "Deserialization of CredentialsResponse failed"
         );
         assertEquals(VAL_USER, res.getUsername(), "Incorrect username");

src/test/java/de/stklcode/jvault/connector/model/response/ErrorResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -44,7 +43,7 @@ class ErrorResponseTest extends AbstractModelTest<ErrorResponse> {
     @Override
     protected ErrorResponse createFull() {
         try {
-            return new ObjectMapper().readValue(JSON, ErrorResponse.class);
+            return objectMapper.readValue(JSON, ErrorResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -56,16 +55,15 @@ class ErrorResponseTest extends AbstractModelTest<ErrorResponse> {
      */
     @Test
     void jsonRoundtrip() {
-        ObjectMapper om = new ObjectMapper();
         ErrorResponse res = assertDoesNotThrow(
-                () -> om.readValue(JSON, ErrorResponse.class),
+                () -> objectMapper.readValue(JSON, ErrorResponse.class),
                 "ErrorResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");
         assertEquals(List.of(ERROR_1, ERROR_2), res.getErrors(), "Unexpected error messages");
         assertEquals(
                 JSON,
-                assertDoesNotThrow(() -> om.writeValueAsString(res), "ErrorResponse serialization failed"),
+                assertDoesNotThrow(() -> objectMapper.writeValueAsString(res), "ErrorResponse serialization failed"),
                 "Unexpected JSON string after serialization"
         );
     }
@@ -74,13 +72,13 @@ class ErrorResponseTest extends AbstractModelTest<ErrorResponse> {
     @Test
     void testToString() {
         ErrorResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(JSON, ErrorResponse.class),
+                () -> objectMapper.readValue(JSON, ErrorResponse.class),
                 "ErrorResponse deserialization failed"
         );
         assertEquals(ERROR_1, res.toString());
 
         res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(JSON_EMPTY, ErrorResponse.class),
+                () -> objectMapper.readValue(JSON_EMPTY, ErrorResponse.class),
                 "ErrorResponse deserialization failed with empty list"
         );
         assertEquals("error response", res.toString());

src/test/java/de/stklcode/jvault/connector/model/response/HealthResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -61,7 +60,7 @@ class HealthResponseTest extends AbstractModelTest<HealthResponse> {
     @Override
     protected HealthResponse createFull() {
         try {
-            return new ObjectMapper().readValue(RES_JSON, HealthResponse.class);
+            return objectMapper.readValue(RES_JSON, HealthResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -74,7 +73,7 @@ class HealthResponseTest extends AbstractModelTest<HealthResponse> {
     @Test
     void jsonRoundtrip() {
         HealthResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(RES_JSON, HealthResponse.class),
+                () -> objectMapper.readValue(RES_JSON, HealthResponse.class),
                 "Health deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");

src/test/java/de/stklcode/jvault/connector/model/response/HelpResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -40,7 +39,7 @@ class HelpResponseTest extends AbstractModelTest<HelpResponse> {
     @Override
     protected HelpResponse createFull() {
         try {
-            return new ObjectMapper().readValue(JSON, HelpResponse.class);
+            return objectMapper.readValue(JSON, HelpResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -52,16 +51,15 @@ class HelpResponseTest extends AbstractModelTest<HelpResponse> {
      */
     @Test
     void jsonRoundtrip() {
-        ObjectMapper om = new ObjectMapper();
         HelpResponse res = assertDoesNotThrow(
-                () -> om.readValue(JSON, HelpResponse.class),
+                () -> objectMapper.readValue(JSON, HelpResponse.class),
                 "HelpResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");
         assertEquals(HELP, res.getHelp(), "Unexpected help text");
         assertEquals(
                 JSON,
-                assertDoesNotThrow(() -> om.writeValueAsString(res), "HelpResponse serialization failed"),
+                assertDoesNotThrow(() -> objectMapper.writeValueAsString(res), "HelpResponse serialization failed"),
                 "Unexpected JSON string after serialization"
         );
     }

src/test/java/de/stklcode/jvault/connector/model/response/MetaSecretResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -89,7 +88,7 @@ class MetaSecretResponseTest extends AbstractModelTest<MetaSecretResponse> {
     @Override
     protected MetaSecretResponse createFull() {
         try {
-            return new ObjectMapper().readValue(SECRET_JSON_V2, MetaSecretResponse.class);
+            return objectMapper.readValue(SECRET_JSON_V2, MetaSecretResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -103,7 +102,7 @@ class MetaSecretResponseTest extends AbstractModelTest<MetaSecretResponse> {
     void jsonRoundtrip() {
         // KV v2 secret.
         MetaSecretResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(SECRET_JSON_V2, MetaSecretResponse.class),
+                () -> objectMapper.readValue(SECRET_JSON_V2, MetaSecretResponse.class),
                 "SecretResponse deserialization failed"
         );
         assertSecretData(res);
@@ -117,7 +116,7 @@ class MetaSecretResponseTest extends AbstractModelTest<MetaSecretResponse> {
 
         // Deleted KV v2 secret.
         res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(SECRET_JSON_V2_2, MetaSecretResponse.class),
+                () -> objectMapper.readValue(SECRET_JSON_V2_2, MetaSecretResponse.class),
                 "SecretResponse deserialization failed"
         );
         assertSecretData(res);

src/test/java/de/stklcode/jvault/connector/model/response/MetadataResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -71,7 +70,7 @@ class MetadataResponseTest extends AbstractModelTest<MetadataResponse> {
     @Override
     protected MetadataResponse createFull() {
         try {
-            return new ObjectMapper().readValue(META_JSON, MetadataResponse.class);
+            return objectMapper.readValue(META_JSON, MetadataResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -84,7 +83,7 @@ class MetadataResponseTest extends AbstractModelTest<MetadataResponse> {
     @Test
     void jsonRoundtrip() {
         MetadataResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(META_JSON, MetadataResponse.class),
+                () -> objectMapper.readValue(META_JSON, MetadataResponse.class),
                 "MetadataResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");

src/test/java/de/stklcode/jvault/connector/model/response/PlainSecretResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -60,7 +59,7 @@ class PlainSecretResponseTest extends AbstractModelTest<PlainSecretResponse> {
     @Override
     protected PlainSecretResponse createFull() {
         try {
-            return new ObjectMapper().readValue(SECRET_JSON, PlainSecretResponse.class);
+            return objectMapper.readValue(SECRET_JSON, PlainSecretResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -73,7 +72,7 @@ class PlainSecretResponseTest extends AbstractModelTest<PlainSecretResponse> {
     @Test
     void jsonRoundtrip() {
         SecretResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(SECRET_JSON, PlainSecretResponse.class),
+                () -> objectMapper.readValue(SECRET_JSON, PlainSecretResponse.class),
                 "SecretResponse deserialization failed"
         );
 

src/test/java/de/stklcode/jvault/connector/model/response/SealResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -80,7 +79,7 @@ class SealResponseTest extends AbstractModelTest<SealResponse> {
     @Override
     protected SealResponse createFull() {
         try {
-            return new ObjectMapper().readValue(RES_UNSEALED, SealResponse.class);
+            return objectMapper.readValue(RES_UNSEALED, SealResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -94,7 +93,7 @@ class SealResponseTest extends AbstractModelTest<SealResponse> {
     void jsonRoundtripSealed() {
         // First test sealed Vault's response.
         SealResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(RES_SEALED, SealResponse.class),
+                () -> objectMapper.readValue(RES_SEALED, SealResponse.class),
                 "SealResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");
@@ -116,7 +115,7 @@ class SealResponseTest extends AbstractModelTest<SealResponse> {
 
         // Not test unsealed Vault's response.
         res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(RES_UNSEALED, SealResponse.class),
+                () -> objectMapper.readValue(RES_UNSEALED, SealResponse.class),
                 "SealResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");

src/test/java/de/stklcode/jvault/connector/model/response/SecretListResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -54,7 +53,7 @@ class SecretListResponseTest extends AbstractModelTest<SecretListResponse> {
     @Override
     protected SecretListResponse createFull() {
         try {
-            return new ObjectMapper().readValue(JSON, SecretListResponse.class);
+            return objectMapper.readValue(JSON, SecretListResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -67,7 +66,7 @@ class SecretListResponseTest extends AbstractModelTest<SecretListResponse> {
     @Test
     void getKeysTest() {
         SecretListResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(JSON, SecretListResponse.class),
+                () -> objectMapper.readValue(JSON, SecretListResponse.class),
                 "SecretListResponse deserialization failed"
         );
 

src/test/java/de/stklcode/jvault/connector/model/response/SecretVersionResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -50,7 +49,7 @@ class SecretVersionResponseTest extends AbstractModelTest<SecretVersionResponse>
     @Override
     protected SecretVersionResponse createFull() {
         try {
-            return new ObjectMapper().readValue(META_JSON, SecretVersionResponse.class);
+            return objectMapper.readValue(META_JSON, SecretVersionResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -63,7 +62,7 @@ class SecretVersionResponseTest extends AbstractModelTest<SecretVersionResponse>
     @Test
     void jsonRoundtrip() {
         SecretVersionResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(META_JSON, SecretVersionResponse.class),
+                () -> objectMapper.readValue(META_JSON, SecretVersionResponse.class),
                 "SecretVersionResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");

src/test/java/de/stklcode/jvault/connector/model/response/TokenResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import de.stklcode.jvault.connector.model.response.embedded.TokenData;
 import org.junit.jupiter.api.Test;
@@ -96,7 +95,7 @@ class TokenResponseTest extends AbstractModelTest<TokenResponse> {
     @Override
     protected TokenResponse createFull() {
         try {
-            return new ObjectMapper().readValue(RES_JSON, TokenResponse.class);
+            return objectMapper.readValue(RES_JSON, TokenResponse.class);
         } catch (JsonProcessingException e) {
             fail("Creation of full model instance failed", e);
             return null;
@@ -119,7 +118,7 @@ class TokenResponseTest extends AbstractModelTest<TokenResponse> {
     @Test
     void jsonRoundtrip() {
         TokenResponse res = assertDoesNotThrow(
-                () -> new ObjectMapper().readValue(RES_JSON, TokenResponse.class),
+                () -> objectMapper.readValue(RES_JSON, TokenResponse.class),
                 "TokenResponse deserialization failed"
         );
         assertNotNull(res, "Parsed response is NULL");