diff --git a/spring-boot-starter/spring-boot-starter-web/build.gradle b/spring-boot-starter/spring-boot-starter-web/build.gradle
index 57f2e88..ca5be1b 100644
--- a/spring-boot-starter/spring-boot-starter-web/build.gradle
+++ b/spring-boot-starter/spring-boot-starter-web/build.gradle
@@ -21,8 +21,8 @@ dependencies {
     // TODO use spotbugs instead and also apply to all modules?
     implementation(libs.find.bugs)
 
-    testImplementation project(':test:test-utils')
-    testImplementation project(':test:openapi-web')
+    testImplementation(testFixtures(project(':test:test-utils')))
+    testImplementation(testFixtures(project(':test:openapi-web')))
     testImplementation 'org.springframework:spring-web'
     testImplementation 'org.springframework:spring-webmvc'
     testImplementation 'org.apache.tomcat.embed:tomcat-embed-core' // For jakarta.servlet.ServletContext
diff --git a/spring-boot-starter/spring-boot-starter-webflux/build.gradle b/spring-boot-starter/spring-boot-starter-webflux/build.gradle
index 5681a0c..1be442b 100644
--- a/spring-boot-starter/spring-boot-starter-webflux/build.gradle
+++ b/spring-boot-starter/spring-boot-starter-webflux/build.gradle
@@ -20,8 +20,8 @@ dependencies {
     // TODO use spotbugs instead and also apply to all modules?
     implementation(libs.find.bugs)
 
-    testImplementation project(':test:test-utils')
-    testImplementation project(':test:openapi-webflux')
+    testImplementation(testFixtures(project(':test:test-utils')))
+    testImplementation(testFixtures(project(':test:openapi-webflux')))
     testImplementation 'org.springframework.boot:spring-boot-starter-webflux'
     testImplementation 'io.projectreactor:reactor-test'
     testImplementation 'org.apache.tomcat.embed:tomcat-embed-core' // For jakarta.servlet.ServletContext
diff --git a/test/openapi-web/build.gradle b/test/openapi-web/build.gradle
index 1778508..abaea6a 100644
--- a/test/openapi-web/build.gradle
+++ b/test/openapi-web/build.gradle
@@ -2,35 +2,37 @@ import org.springframework.boot.gradle.plugin.SpringBootPlugin
 
 plugins {
     id 'java-library'
+    id 'java-test-fixtures'
     alias(libs.plugins.spring.boot) apply false
     alias(libs.plugins.openapi.generator)
 }
 
 dependencies {
-    implementation platform(SpringBootPlugin.BOM_COORDINATES)
+    testFixturesImplementation platform(SpringBootPlugin.BOM_COORDINATES)
 
-    compileOnly project(':openapi-validation-api')
-    compileOnly project(':openapi-validation-core')
+    testFixturesCompileOnly project(':openapi-validation-api')
+    testFixturesCompileOnly project(':openapi-validation-core')
 
-    compileOnly 'org.springframework.boot:spring-boot-starter'
-    compileOnly 'org.springframework:spring-web'
+    testFixturesCompileOnly 'org.springframework.boot:spring-boot-starter'
+    testFixturesCompileOnly 'org.springframework:spring-web'
 
     // TODO use spotbugs instead and also apply to all modules?
-    implementation(libs.find.bugs)
+    testFixturesImplementation(libs.find.bugs)
 
-    api 'org.springframework.boot:spring-boot-starter-test'
+    testFixturesApi platform(SpringBootPlugin.BOM_COORDINATES)
+    testFixturesApi 'org.springframework.boot:spring-boot-starter-test'
     // For openapi generated code
-    implementation 'org.springframework.boot:spring-boot-starter-validation'
-    implementation(libs.openapi.tools.jacksonDatabindNullable)
-    implementation(libs.jakarta.validation.api)
-    implementation(libs.swagger.annotations)
-    api 'org.apache.tomcat.embed:tomcat-embed-core' // For jakarta.servlet.ServletContext
+    testFixturesApi 'org.springframework.boot:spring-boot-starter-validation'
+    testFixturesApi(libs.openapi.tools.jacksonDatabindNullable)
+    testFixturesApi(libs.jakarta.validation.api)
+    testFixturesApi(libs.swagger.annotations)
+    testFixturesApi 'org.apache.tomcat.embed:tomcat-embed-core' // For jakarta.servlet.ServletContext
 }
 
 
 def generatedSourceDirectory = "$buildDir/generated/openapi"
 sourceSets {
-    main {
+    testFixtures {
         java {
             srcDir generatedSourceDirectory + '/src/main/java'
         }
diff --git a/test/openapi-webflux/build.gradle b/test/openapi-webflux/build.gradle
index 3613cb3..5473b78 100644
--- a/test/openapi-webflux/build.gradle
+++ b/test/openapi-webflux/build.gradle
@@ -2,35 +2,37 @@ import org.springframework.boot.gradle.plugin.SpringBootPlugin
 
 plugins {
     id 'java-library'
+    id 'java-test-fixtures'
     alias(libs.plugins.spring.boot) apply false
     alias(libs.plugins.openapi.generator)
 }
 
 dependencies {
-    implementation platform(SpringBootPlugin.BOM_COORDINATES)
+    testFixturesImplementation platform(SpringBootPlugin.BOM_COORDINATES)
 
-    compileOnly project(':openapi-validation-api')
-    compileOnly project(':openapi-validation-core')
+    testFixturesCompileOnly project(':openapi-validation-api')
+    testFixturesCompileOnly project(':openapi-validation-core')
 
-    compileOnly 'org.springframework.boot:spring-boot-starter'
-    compileOnly 'org.springframework:spring-webflux'
+    testFixturesCompileOnly 'org.springframework.boot:spring-boot-starter'
+    testFixturesCompileOnly 'org.springframework:spring-webflux'
 
     // TODO use spotbugs instead and also apply to all modules?
-    implementation(libs.find.bugs)
+    testFixturesImplementation(libs.find.bugs)
 
-    api 'org.springframework.boot:spring-boot-starter-test'
+    testFixturesApi platform(SpringBootPlugin.BOM_COORDINATES)
+    testFixturesApi 'org.springframework.boot:spring-boot-starter-test'
     // For openapi generated code
-    implementation 'org.springframework.boot:spring-boot-starter-validation'
-    implementation(libs.openapi.tools.jacksonDatabindNullable)
-    implementation(libs.jakarta.validation.api)
-    implementation(libs.swagger.annotations)
-    api 'org.apache.tomcat.embed:tomcat-embed-core' // For jakarta.servlet.ServletContext
+    testFixturesApi 'org.springframework.boot:spring-boot-starter-validation'
+    testFixturesApi(libs.openapi.tools.jacksonDatabindNullable)
+    testFixturesApi(libs.jakarta.validation.api)
+    testFixturesApi(libs.swagger.annotations)
+    testFixturesApi 'org.apache.tomcat.embed:tomcat-embed-core' // For jakarta.servlet.ServletContext
 }
 
 
 def generatedSourceDirectory = "$buildDir/generated/openapi"
 sourceSets {
-    main {
+    testFixtures {
         java {
             srcDir generatedSourceDirectory + '/src/main/java'
         }
diff --git a/test/test-utils/build.gradle b/test/test-utils/build.gradle
index d20371d..ac938c3 100644
--- a/test/test-utils/build.gradle
+++ b/test/test-utils/build.gradle
@@ -2,18 +2,22 @@ import org.springframework.boot.gradle.plugin.SpringBootPlugin
 
 plugins {
     id 'java-library'
+    id 'java-test-fixtures'
     alias(libs.plugins.spring.boot) apply false
 }
 
 dependencies {
-    implementation platform(SpringBootPlugin.BOM_COORDINATES)
+    testFixturesImplementation platform(SpringBootPlugin.BOM_COORDINATES)
 
-    compileOnly project(':openapi-validation-api')
-    compileOnly project(':openapi-validation-core')
+    testFixturesCompileOnly(libs.lombok)
+    testFixturesAnnotationProcessor(libs.lombok)
+
+    testFixturesCompileOnly project(':openapi-validation-api')
+    testFixturesCompileOnly project(':openapi-validation-core')
 
     // TODO use spotbugs instead and also apply to all modules?
-    implementation(libs.find.bugs)
+    testFixturesImplementation(libs.find.bugs)
 
-    compileOnly 'org.springframework.boot:spring-boot-starter'
-    compileOnly 'org.springframework:spring-web'
+    testFixturesCompileOnly 'org.springframework.boot:spring-boot-starter'
+    testFixturesCompileOnly 'org.springframework:spring-web'
 }
diff --git a/test/test-utils/src/main/java/com/getyourguide/openapi/validation/test/DefaultSpringBootTestConfiguration.java b/test/test-utils/src/testFixtures/java/com/getyourguide/openapi/validation/test/DefaultSpringBootTestConfiguration.java
similarity index 100%
rename from test/test-utils/src/main/java/com/getyourguide/openapi/validation/test/DefaultSpringBootTestConfiguration.java
rename to test/test-utils/src/testFixtures/java/com/getyourguide/openapi/validation/test/DefaultSpringBootTestConfiguration.java
diff --git a/test/test-utils/src/main/java/com/getyourguide/openapi/validation/test/TestViolationLogger.java b/test/test-utils/src/testFixtures/java/com/getyourguide/openapi/validation/test/TestViolationLogger.java
similarity index 100%
rename from test/test-utils/src/main/java/com/getyourguide/openapi/validation/test/TestViolationLogger.java
rename to test/test-utils/src/testFixtures/java/com/getyourguide/openapi/validation/test/TestViolationLogger.java
diff --git a/test/test-utils/src/main/java/com/getyourguide/openapi/validation/test/exception/WithResponseStatusException.java b/test/test-utils/src/testFixtures/java/com/getyourguide/openapi/validation/test/exception/WithResponseStatusException.java
similarity index 100%
rename from test/test-utils/src/main/java/com/getyourguide/openapi/validation/test/exception/WithResponseStatusException.java
rename to test/test-utils/src/testFixtures/java/com/getyourguide/openapi/validation/test/exception/WithResponseStatusException.java
diff --git a/test/test-utils/src/main/java/com/getyourguide/openapi/validation/test/exception/WithoutResponseStatusException.java b/test/test-utils/src/testFixtures/java/com/getyourguide/openapi/validation/test/exception/WithoutResponseStatusException.java
similarity index 100%
rename from test/test-utils/src/main/java/com/getyourguide/openapi/validation/test/exception/WithoutResponseStatusException.java
rename to test/test-utils/src/testFixtures/java/com/getyourguide/openapi/validation/test/exception/WithoutResponseStatusException.java