diff --git a/integration-tests/kotlin/src/test/kotlin/io/quarkus/it/testing/repro34099/Repro34099Test.kt b/integration-tests/kotlin/src/test/kotlin/io/quarkus/it/testing/repro34099/Repro34099Test.kt
new file mode 100644
index 0000000000000..5e63473cbc4b9
--- /dev/null
+++ b/integration-tests/kotlin/src/test/kotlin/io/quarkus/it/testing/repro34099/Repro34099Test.kt
@@ -0,0 +1,23 @@
+package io.quarkus.it.testing.repro34099
+
+import io.quarkus.test.junit.QuarkusTest
+import java.time.Duration
+import org.junit.jupiter.api.Assertions
+import org.junit.jupiter.api.Disabled
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertTimeout
+
+@QuarkusTest
+class Repro34099Test {
+    @Test
+    fun javaAssertion() {
+        Assertions.assertTimeout(Duration.ofSeconds(1)) {}
+    }
+
+    @Test
+    @Disabled("https://github.com/quarkusio/quarkus/issues/34099")
+    // fails with `Linkage loader constraint violation`
+    fun kotlinAssertion() {
+        assertTimeout(Duration.ofSeconds(1)) {}
+    }
+}
diff --git a/integration-tests/kotlin/src/test/kotlin/io/quarkus/it/testing/repro42000/Repro42000Test.kt b/integration-tests/kotlin/src/test/kotlin/io/quarkus/it/testing/repro42000/Repro42000Test.kt
new file mode 100644
index 0000000000000..cbcb4a259fbb1
--- /dev/null
+++ b/integration-tests/kotlin/src/test/kotlin/io/quarkus/it/testing/repro42000/Repro42000Test.kt
@@ -0,0 +1,42 @@
+package io.quarkus.it.testing.repro42000
+
+import io.quarkus.test.junit.QuarkusTest
+import java.util.stream.Stream
+import org.junit.jupiter.api.Assertions.assertNotNull
+import org.junit.jupiter.api.Disabled
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.Arguments
+import org.junit.jupiter.params.provider.MethodSource
+
+@QuarkusTest
+class Repro42000Test {
+    companion object {
+        val lambda: (String) -> String = { s -> s }
+
+        fun function(s: String) = s
+
+        @JvmStatic
+        fun lambdaProvider(): Stream<Arguments> {
+            return Stream.of(Arguments.of(lambda))
+        }
+
+        @JvmStatic
+        fun functionProvider(): Stream<Arguments> {
+            return Stream.of(Arguments.of(::function))
+        }
+    }
+
+    @ParameterizedTest
+    @MethodSource("lambdaProvider")
+    @Disabled("https://github.com/quarkusio/quarkus/issues/42000")
+    // fails with `IllegalArgumentException: argument type mismatch`
+    fun testLambdaProvider(function: (String) -> String) {
+        assertNotNull(function)
+    }
+
+    @ParameterizedTest
+    @MethodSource("functionProvider")
+    fun testFunctionProvider(function: (String) -> String) {
+        assertNotNull(function)
+    }
+}
diff --git a/integration-tests/main/src/main/java/io/quarkus/it/testing/repro44320/MyService.java b/integration-tests/main/src/main/java/io/quarkus/it/testing/repro44320/MyService.java
new file mode 100644
index 0000000000000..1f2b031c1d5fd
--- /dev/null
+++ b/integration-tests/main/src/main/java/io/quarkus/it/testing/repro44320/MyService.java
@@ -0,0 +1,17 @@
+package io.quarkus.it.testing.repro44320;
+
+import java.util.Set;
+
+import jakarta.enterprise.context.ApplicationScoped;
+
+import io.quarkus.arc.Unremovable;
+import io.quarkus.runtime.Startup;
+
+@ApplicationScoped
+@Startup
+@Unremovable
+public class MyService {
+    public Set<String> get() {
+        return Set.of("a", "b", "c");
+    }
+}
diff --git a/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro13261/Repro13261Test.java b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro13261/Repro13261Test.java
new file mode 100644
index 0000000000000..e6abb234611f7
--- /dev/null
+++ b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro13261/Repro13261Test.java
@@ -0,0 +1,24 @@
+package io.quarkus.it.main.testing.repro13261;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import java.nio.file.Path;
+
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import io.quarkus.test.junit.QuarkusTest;
+
+@Disabled("https://github.com/quarkusio/quarkus/issues/13261")
+// fails with `expected: not <null>`
+@QuarkusTest
+public class Repro13261Test {
+    @TempDir
+    Path tempDir;
+
+    @Test
+    public void test() {
+        assertNotNull(tempDir);
+    }
+}
diff --git a/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro42006/Repro42006Test.java b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro42006/Repro42006Test.java
new file mode 100644
index 0000000000000..b0929b32df3a6
--- /dev/null
+++ b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro42006/Repro42006Test.java
@@ -0,0 +1,43 @@
+package io.quarkus.it.main.testing.repro42006;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.Serializable;
+import java.util.function.Supplier;
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.ArgumentsProvider;
+import org.junit.jupiter.params.provider.ArgumentsSource;
+
+import io.quarkus.test.junit.QuarkusTest;
+
+@Disabled("https://github.com/quarkusio/quarkus/issues/42006")
+// fails with `java.lang.ClassNotFoundException: io.quarkus.it.main.testing.repro42006.Repro42006Test$LambdaProvider$$Lambda$4007/0x000075d5017e8450`
+@QuarkusTest
+public class Repro42006Test {
+    @ParameterizedTest
+    @ArgumentsSource(LambdaProvider.class)
+    void test(String type, Object lambda) {
+        assertTrue(lambda.toString().contains("$$Lambda"), "Failed on " + type);
+    }
+
+    private static class LambdaProvider implements ArgumentsProvider {
+        @Override
+        public Stream<? extends Arguments> provideArguments(ExtensionContext context) {
+            return Stream.of(
+                    Arguments.of("SerializableSupplier", (SerializableSupplier) () -> "foo"),
+                    Arguments.of("SerializableCustom", (SerializableCustom) () -> "bar"));
+        }
+    }
+
+    public interface SerializableSupplier extends Supplier<String>, Serializable {
+    }
+
+    public interface SerializableCustom extends Serializable {
+        String get();
+    }
+}
diff --git a/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro44320/Repro44320Test.java b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro44320/Repro44320Test.java
new file mode 100644
index 0000000000000..cb4588dbca060
--- /dev/null
+++ b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro44320/Repro44320Test.java
@@ -0,0 +1,43 @@
+package io.quarkus.it.main.testing.repro44320;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import jakarta.inject.Inject;
+
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.TestInstance;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import io.quarkus.it.testing.repro44320.MyService;
+import io.quarkus.test.junit.QuarkusTest;
+
+@Disabled("https://github.com/quarkusio/quarkus/issues/44320")
+// fails with `You must configure at least one set of arguments for this @ParameterizedTest`, because the `set` is empty
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+@QuarkusTest
+public class Repro44320Test {
+    private static Set<String> set = new HashSet<>();
+
+    @Inject
+    MyService service;
+
+    @BeforeAll
+    public void beforeAllTests() {
+        set = service.get();
+    }
+
+    @ParameterizedTest
+    @MethodSource("getData")
+    public void test(String key) {
+        assertNotNull(key);
+    }
+
+    public Set<String> getData() {
+        return set;
+    }
+}
diff --git a/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro8446/Greeter.java b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro8446/Greeter.java
new file mode 100644
index 0000000000000..8a410d2f0afc8
--- /dev/null
+++ b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro8446/Greeter.java
@@ -0,0 +1,5 @@
+package io.quarkus.it.main.testing.repro8446;
+
+public interface Greeter {
+    String hello();
+}
diff --git a/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro8446/GreeterExtension.java b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro8446/GreeterExtension.java
new file mode 100644
index 0000000000000..05155a0bd61cb
--- /dev/null
+++ b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro8446/GreeterExtension.java
@@ -0,0 +1,52 @@
+package io.quarkus.it.main.testing.repro8446;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.extension.Extension;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.api.extension.ParameterResolutionException;
+import org.junit.jupiter.api.extension.ParameterResolver;
+import org.junit.jupiter.api.extension.TestTemplateInvocationContext;
+import org.junit.jupiter.api.extension.TestTemplateInvocationContextProvider;
+
+public class GreeterExtension implements TestTemplateInvocationContextProvider {
+    @Override
+    public boolean supportsTestTemplate(ExtensionContext context) {
+        return context.getTestMethod().map(method -> {
+            return Arrays.asList(method.getParameterTypes()).contains(Greeter.class);
+        }).orElse(false);
+    }
+
+    @Override
+    public Stream<TestTemplateInvocationContext> provideTestTemplateInvocationContexts(ExtensionContext context) {
+        return Stream.of(new HelloTestTemplateInvocationContext(() -> "hello"));
+    }
+
+    private static class HelloTestTemplateInvocationContext implements TestTemplateInvocationContext, ParameterResolver {
+        private final Greeter greeter;
+
+        public HelloTestTemplateInvocationContext(Greeter greeter) {
+            this.greeter = greeter;
+        }
+
+        @Override
+        public List<Extension> getAdditionalExtensions() {
+            return Collections.singletonList(this);
+        }
+
+        @Override
+        public boolean supportsParameter(ParameterContext pc, ExtensionContext extensionContext)
+                throws ParameterResolutionException {
+            return pc.getParameter().getType() == Greeter.class;
+        }
+
+        @Override
+        public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) {
+            return greeter;
+        }
+    }
+}
diff --git a/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro8446/Repro8446Test.java b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro8446/Repro8446Test.java
new file mode 100644
index 0000000000000..2edab696af117
--- /dev/null
+++ b/integration-tests/main/src/test/java/io/quarkus/it/main/testing/repro8446/Repro8446Test.java
@@ -0,0 +1,20 @@
+package io.quarkus.it.main.testing.repro8446;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.TestTemplate;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import io.quarkus.test.junit.QuarkusTest;
+
+@Disabled("https://github.com/quarkusio/quarkus/issues/8446")
+// fails with `IllegalArgumentException: argument type mismatch`
+@QuarkusTest
+public class Repro8446Test {
+    @TestTemplate
+    @ExtendWith(GreeterExtension.class)
+    public void test(Greeter greeter) {
+        assertEquals("hello", greeter.hello());
+    }
+}