diff --git a/build.gradle b/build.gradle
index 4bd499d60..48bb1a0e6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -145,14 +145,6 @@ subprojects {
 
     // use common bundled testing depenendencies for all test plugins
     plugins.withType(eclipsebuild.TestBundlePlugin) {
-        dependencies {
-            implementation "org.codehaus.groovy:groovy-all:$groovyLibVersion"
-            bundled "org.codehaus.groovy:groovy-all:$groovyLibVersion"
-            bundled "org.objenesis:objenesis:$objenesisLibVersion"
-            bundled "org.spockframework:spock-core:$spockLibVersion"
-            bundled "cglib:cglib-nodep:$cglibLibVersion"
-            bundled "org.slf4j:slf4j-simple:$slf4jLibVersion"
-        }
         if (project.hasProperty('eclipse.test.java.version')) {
             tasks.withType(EclipseTestTask) {
                 javaLauncher = javaToolchains.launcherFor {
diff --git a/buildSrc/src/main/groovy/eclipsebuild/testing/EclipseTestExecuter.java b/buildSrc/src/main/groovy/eclipsebuild/testing/EclipseTestExecuter.java
index 68228eb70..c7e0ae7da 100644
--- a/buildSrc/src/main/groovy/eclipsebuild/testing/EclipseTestExecuter.java
+++ b/buildSrc/src/main/groovy/eclipsebuild/testing/EclipseTestExecuter.java
@@ -118,8 +118,12 @@ private void runPDETestsInEclipse(final TestExecutionSpec testSpec, final TestRe
         programArgs.add("-port");
         programArgs.add(Integer.toString(pdeTestPort));
         programArgs.add("-testLoaderClass");
+        // TODO (donat) make test loader configurable
+        // programArgs.add("org.eclipse.jdt.internal.junit5.runner.JUnit5TestLoader");
         programArgs.add("org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader");
         programArgs.add("-loaderpluginname");
+        // TODO (donat) make runtime configurable
+        // programArgs.add("org.eclipse.jdt.junit5.runtime");
         programArgs.add("org.eclipse.jdt.junit4.runtime");
         programArgs.add("-classNames");
 
diff --git a/org.eclipse.buildship.core.test/build.gradle b/org.eclipse.buildship.core.test/build.gradle
index 3777cbe8d..d3864c93e 100644
--- a/org.eclipse.buildship.core.test/build.gradle
+++ b/org.eclipse.buildship.core.test/build.gradle
@@ -4,6 +4,12 @@ apply plugin: eclipsebuild.TestBundlePlugin
 apply plugin: 'groovy'
 
 dependencies {
+    implementation "org.codehaus.groovy:groovy-all:$groovyLibVersion"
+    bundled "org.codehaus.groovy:groovy-all:$groovyLibVersion"
+    bundled "org.objenesis:objenesis:$objenesisLibVersion"
+    bundled "org.spockframework:spock-core:$spockLibVersion"
+    bundled "cglib:cglib-nodep:$cglibLibVersion"
+    bundled "org.slf4j:slf4j-simple:$slf4jLibVersion"
     bundled 'org.spockframework:spock-core:1.3-groovy-2.5'
     implementation project(':org.eclipse.buildship.compat')
     api project(':org.eclipse.buildship.core')
diff --git a/org.eclipse.buildship.oomph.test/build.gradle b/org.eclipse.buildship.oomph.test/build.gradle
index 006a906ad..35efe4029 100644
--- a/org.eclipse.buildship.oomph.test/build.gradle
+++ b/org.eclipse.buildship.oomph.test/build.gradle
@@ -2,6 +2,12 @@ apply plugin: eclipsebuild.TestBundlePlugin
 apply plugin: 'groovy'
 
 dependencies {
+    implementation "org.codehaus.groovy:groovy-all:$groovyLibVersion"
+    bundled "org.codehaus.groovy:groovy-all:$groovyLibVersion"
+    bundled "org.objenesis:objenesis:$objenesisLibVersion"
+    bundled "org.spockframework:spock-core:$spockLibVersion"
+    bundled "cglib:cglib-nodep:$cglibLibVersion"
+    bundled "org.slf4j:slf4j-simple:$slf4jLibVersion"
     bundled 'org.spockframework:spock-core:1.3-groovy-2.5'
     implementation project(':org.eclipse.buildship.compat')
     implementation project(':org.eclipse.buildship.core')
diff --git a/org.eclipse.buildship.testfixtures/.classpath b/org.eclipse.buildship.testfixtures/.classpath
new file mode 100644
index 000000000..eb73f4e21
--- /dev/null
+++ b/org.eclipse.buildship.testfixtures/.classpath
@@ -0,0 +1,13 @@
+<classpath>
+  <classpathentry kind="src" path="src/main/java"/>
+  <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
+    <attributes>
+      <attribute name="module" value="true"/>
+    </attributes>
+  </classpathentry>
+  <classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+  <classpathentry kind="output" path="bin"/>
+  <classpathentry exported="true" kind="lib" path="lib/groovy-4.0.5.jar" sourcepath="lib/groovy-4.0.5-sources.jar"/>
+  <classpathentry exported="true" kind="lib" path="lib/hamcrest-2.2.jar" sourcepath="lib/hamcrest-2.2-sources.jar"/>
+  <classpathentry exported="true" kind="lib" path="lib/spock-core-2.3-groovy-4.0.jar" sourcepath="lib/spock-core-2.3-groovy-4.0-sources.jar"/>
+</classpath>
diff --git a/org.eclipse.buildship.testfixtures/.project b/org.eclipse.buildship.testfixtures/.project
new file mode 100644
index 000000000..4dc525b6a
--- /dev/null
+++ b/org.eclipse.buildship.testfixtures/.project
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>org.eclipse.buildship.testfixtures</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.ManifestBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.SchemaBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.pde.PluginNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+	<filteredResources>
+	</filteredResources>
+</projectDescription>
diff --git a/org.eclipse.buildship.testfixtures/META-INF/MANIFEST.MF b/org.eclipse.buildship.testfixtures/META-INF/MANIFEST.MF
new file mode 100644
index 000000000..17983887c
--- /dev/null
+++ b/org.eclipse.buildship.testfixtures/META-INF/MANIFEST.MF
@@ -0,0 +1,178 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: Buildship, Eclipse Plug-ins for Gradle - Test fixtures
+Bundle-SymbolicName: org.eclipse.buildship.testfixtures;singleton:=true
+Bundle-Version: 3.1.7.qualifier
+Bundle-Vendor: Eclipse Buildship
+Bundle-RequiredExecutionEnvironment: JavaSE-11
+Bundle-ClassPath: .,
+ lib/groovy-4.0.5.jar,
+ lib/hamcrest-2.2.jar,
+ lib/spock-core-2.3-groovy-4.0.jar
+Require-Bundle: org.junit.jupiter.api;visibility:=reexport,
+ org.junit.platform.engine,
+ org.opentest4j,
+ org.junit.platform.commons
+Export-Package: groovy.beans,
+ groovy.cli,
+ groovy.cli.internal,
+ groovy.grape,
+ groovy.inspect,
+ groovy.io,
+ groovy.lang,
+ groovy.lang.groovydoc,
+ groovy.namespace,
+ groovy.security,
+ groovy.time,
+ groovy.transform,
+ groovy.transform.builder,
+ groovy.transform.options,
+ groovy.transform.stc,
+ groovy.ui,
+ groovy.util,
+ groovy.util.logging,
+ groovyjarjarantlr4.runtime,
+ groovyjarjarantlr4.runtime.debug,
+ groovyjarjarantlr4.runtime.misc,
+ groovyjarjarantlr4.runtime.tree,
+ groovyjarjarantlr4.v4,
+ groovyjarjarantlr4.v4.analysis,
+ groovyjarjarantlr4.v4.automata,
+ groovyjarjarantlr4.v4.codegen,
+ groovyjarjarantlr4.v4.codegen.model,
+ groovyjarjarantlr4.v4.codegen.model.chunk,
+ groovyjarjarantlr4.v4.codegen.model.decl,
+ groovyjarjarantlr4.v4.codegen.target,
+ groovyjarjarantlr4.v4.gui,
+ groovyjarjarantlr4.v4.misc,
+ groovyjarjarantlr4.v4.parse,
+ groovyjarjarantlr4.v4.runtime,
+ groovyjarjarantlr4.v4.runtime.atn,
+ groovyjarjarantlr4.v4.runtime.dfa,
+ groovyjarjarantlr4.v4.runtime.misc,
+ groovyjarjarantlr4.v4.runtime.tree,
+ groovyjarjarantlr4.v4.runtime.tree.pattern,
+ groovyjarjarantlr4.v4.runtime.tree.xpath,
+ groovyjarjarantlr4.v4.semantics,
+ groovyjarjarantlr4.v4.tool,
+ groovyjarjarantlr4.v4.tool.ast,
+ groovyjarjarantlr4.v4.unicode,
+ groovyjarjarasm.asm,
+ groovyjarjarasm.asm.commons,
+ groovyjarjarasm.asm.signature,
+ groovyjarjarasm.asm.tree,
+ groovyjarjarasm.asm.util,
+ groovyjarjarpicocli,
+ org.apache.groovy.antlr,
+ org.apache.groovy.ast.tools,
+ org.apache.groovy.internal.metaclass,
+ org.apache.groovy.internal.util,
+ org.apache.groovy.io,
+ org.apache.groovy.lang,
+ org.apache.groovy.lang.annotation,
+ org.apache.groovy.metaclass,
+ org.apache.groovy.parser.antlr4,
+ org.apache.groovy.parser.antlr4.internal,
+ org.apache.groovy.parser.antlr4.internal.atnmanager,
+ org.apache.groovy.parser.antlr4.util,
+ org.apache.groovy.plugin,
+ org.apache.groovy.runtime,
+ org.apache.groovy.util,
+ org.apache.groovy.util.concurrent,
+ org.apache.groovy.util.concurrent.concurrentlinkedhashmap,
+ org.codehaus.groovy,
+ org.codehaus.groovy.antlr,
+ org.codehaus.groovy.ast,
+ org.codehaus.groovy.ast.builder,
+ org.codehaus.groovy.ast.decompiled,
+ org.codehaus.groovy.ast.expr,
+ org.codehaus.groovy.ast.stmt,
+ org.codehaus.groovy.ast.tools,
+ org.codehaus.groovy.classgen,
+ org.codehaus.groovy.classgen.asm,
+ org.codehaus.groovy.classgen.asm.indy,
+ org.codehaus.groovy.classgen.asm.indy.sc,
+ org.codehaus.groovy.classgen.asm.sc,
+ org.codehaus.groovy.classgen.asm.util,
+ org.codehaus.groovy.control,
+ org.codehaus.groovy.control.customizers,
+ org.codehaus.groovy.control.customizers.builder,
+ org.codehaus.groovy.control.io,
+ org.codehaus.groovy.control.messages,
+ org.codehaus.groovy.reflection,
+ org.codehaus.groovy.reflection.android,
+ org.codehaus.groovy.reflection.stdclasses,
+ org.codehaus.groovy.reflection.v7,
+ org.codehaus.groovy.runtime,
+ org.codehaus.groovy.runtime.callsite,
+ org.codehaus.groovy.runtime.dgmimpl,
+ org.codehaus.groovy.runtime.dgmimpl.arrays,
+ org.codehaus.groovy.runtime.m12n,
+ org.codehaus.groovy.runtime.memoize,
+ org.codehaus.groovy.runtime.metaclass,
+ org.codehaus.groovy.runtime.powerassert,
+ org.codehaus.groovy.runtime.typehandling,
+ org.codehaus.groovy.runtime.wrappers,
+ org.codehaus.groovy.syntax,
+ org.codehaus.groovy.tools,
+ org.codehaus.groovy.tools.ast,
+ org.codehaus.groovy.tools.gse,
+ org.codehaus.groovy.tools.javac,
+ org.codehaus.groovy.tools.shell,
+ org.codehaus.groovy.tools.shell.util,
+ org.codehaus.groovy.transform,
+ org.codehaus.groovy.transform.sc,
+ org.codehaus.groovy.transform.sc.transformers,
+ org.codehaus.groovy.transform.stc,
+ org.codehaus.groovy.transform.tailrec,
+ org.codehaus.groovy.transform.trait,
+ org.codehaus.groovy.util,
+ org.codehaus.groovy.vmplugin,
+ org.codehaus.groovy.vmplugin.v10,
+ org.codehaus.groovy.vmplugin.v16,
+ org.codehaus.groovy.vmplugin.v7,
+ org.codehaus.groovy.vmplugin.v8,
+ org.codehaus.groovy.vmplugin.v9,
+ org.hamcrest,
+ org.hamcrest.beans,
+ org.hamcrest.collection,
+ org.hamcrest.comparator,
+ org.hamcrest.core,
+ org.hamcrest.internal,
+ org.hamcrest.io,
+ org.hamcrest.number,
+ org.hamcrest.object,
+ org.hamcrest.text,
+ org.hamcrest.xml,
+ org.spockframework.builder,
+ org.spockframework.buildsupport,
+ org.spockframework.compat.groovy2,
+ org.spockframework.compiler,
+ org.spockframework.compiler.model,
+ org.spockframework.gentyref,
+ org.spockframework.lang,
+ org.spockframework.mock,
+ org.spockframework.mock.codegen,
+ org.spockframework.mock.constraint,
+ org.spockframework.mock.response,
+ org.spockframework.mock.runtime,
+ org.spockframework.report.log,
+ org.spockframework.runtime,
+ org.spockframework.runtime.condition,
+ org.spockframework.runtime.extension,
+ org.spockframework.runtime.extension.builtin,
+ org.spockframework.runtime.model,
+ org.spockframework.runtime.model.parallel,
+ org.spockframework.tempdir,
+ org.spockframework.util,
+ org.spockframework.util.inspector,
+ spock.config,
+ spock.lang,
+ spock.mock,
+ spock.util,
+ spock.util.concurrent,
+ spock.util.environment,
+ spock.util.io,
+ spock.util.matcher,
+ spock.util.mop,
+ spock.util.time
diff --git a/org.eclipse.buildship.testfixtures/build.gradle b/org.eclipse.buildship.testfixtures/build.gradle
new file mode 100644
index 000000000..5b84b1a29
--- /dev/null
+++ b/org.eclipse.buildship.testfixtures/build.gradle
@@ -0,0 +1,11 @@
+apply plugin: eclipsebuild.BundlePlugin
+
+dependencies {
+    bundled platform('org.apache.groovy:groovy-bom:4.0.5')
+    bundled 'org.apache.groovy:groovy'
+    bundled platform("org.spockframework:spock-bom:2.3-groovy-4.0")
+    bundled("org.spockframework:spock-core") {
+        exclude group: 'org.junit'
+        exclude group: 'org.junit.platform'
+    }
+}
\ No newline at end of file
diff --git a/org.eclipse.buildship.testfixtures/build.properties b/org.eclipse.buildship.testfixtures/build.properties
new file mode 100644
index 000000000..5dc551ebd
--- /dev/null
+++ b/org.eclipse.buildship.testfixtures/build.properties
@@ -0,0 +1,5 @@
+source.. = src/main/java/
+output.. = bin/
+bin.includes = .,\
+               lib/,\
+               META-INF/,\
diff --git a/org.eclipse.buildship.testfixtures/lib/groovy-4.0.5.jar b/org.eclipse.buildship.testfixtures/lib/groovy-4.0.5.jar
new file mode 100644
index 000000000..b5e8b7074
Binary files /dev/null and b/org.eclipse.buildship.testfixtures/lib/groovy-4.0.5.jar differ
diff --git a/org.eclipse.buildship.testfixtures/lib/hamcrest-2.2.jar b/org.eclipse.buildship.testfixtures/lib/hamcrest-2.2.jar
new file mode 100644
index 000000000..71065788d
Binary files /dev/null and b/org.eclipse.buildship.testfixtures/lib/hamcrest-2.2.jar differ
diff --git a/org.eclipse.buildship.testfixtures/lib/spock-core-2.3-groovy-4.0.jar b/org.eclipse.buildship.testfixtures/lib/spock-core-2.3-groovy-4.0.jar
new file mode 100644
index 000000000..1a6e7c65a
Binary files /dev/null and b/org.eclipse.buildship.testfixtures/lib/spock-core-2.3-groovy-4.0.jar differ
diff --git a/org.eclipse.buildship.ui.test/build.gradle b/org.eclipse.buildship.ui.test/build.gradle
index 7958a7f3f..95ae187d4 100644
--- a/org.eclipse.buildship.ui.test/build.gradle
+++ b/org.eclipse.buildship.ui.test/build.gradle
@@ -2,6 +2,12 @@ apply plugin: eclipsebuild.TestBundlePlugin
 apply plugin: 'groovy'
 
 dependencies {
+    implementation "org.codehaus.groovy:groovy-all:$groovyLibVersion"
+    bundled "org.codehaus.groovy:groovy-all:$groovyLibVersion"
+    bundled "org.objenesis:objenesis:$objenesisLibVersion"
+    bundled "org.spockframework:spock-core:$spockLibVersion"
+    bundled "cglib:cglib-nodep:$cglibLibVersion"
+    bundled "org.slf4j:slf4j-simple:$slf4jLibVersion"
     bundled 'org.spockframework:spock-core:1.3-groovy-2.5'
     implementation project(':org.eclipse.buildship.compat')
     implementation project(':org.eclipse.buildship.core')
diff --git a/settings.gradle b/settings.gradle
index b6017b66c..afc1278e1 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -32,6 +32,7 @@ include ':org.eclipse.buildship.oomph'
 include ':org.eclipse.buildship.oomph.edit'
 include ':org.eclipse.buildship.oomph.feature'
 include ':org.eclipse.buildship.oomph.test'
+include ':org.eclipse.buildship.testfixtures'
 
 // Use local build cache on developer machine and remote cache on CI
 String cacheUrl = System.getProperty('gradle.cache.remote.url', '')