diff --git a/compiler/testData/readClass/FunClassParamNotNull.kt b/compiler/testData/readClass/FunClassParamNotNull.kt
new file mode 100644
index 00000000000..5dd2abe1afb
--- /dev/null
+++ b/compiler/testData/readClass/FunClassParamNotNull.kt
@@ -0,0 +1,5 @@
+namespace test
+
+import java.util.List
+
+fun ff(p: List<String>) = 1
diff --git a/compiler/testData/readClass/FunClassParamNullable.kt b/compiler/testData/readClass/FunClassParamNullable.kt
new file mode 100644
index 00000000000..fafa4387a77
--- /dev/null
+++ b/compiler/testData/readClass/FunClassParamNullable.kt
@@ -0,0 +1,5 @@
+namespace test
+
+import java.util.List
+
+fun ff(p: List<String?>) = 1
diff --git a/compiler/testData/readClass/ReturnTypeClassParamNotNull.kt b/compiler/testData/readClass/ReturnTypeClassParamNotNull.kt
new file mode 100644
index 00000000000..90e394a811a
--- /dev/null
+++ b/compiler/testData/readClass/ReturnTypeClassParamNotNull.kt
@@ -0,0 +1,6 @@
+namespace test
+
+import java.util.List
+import java.util.ArrayList
+
+fun ffgg(): List<String> = ArrayList()
diff --git a/compiler/testData/readClass/ReturnTypeClassParamNullable.kt b/compiler/testData/readClass/ReturnTypeClassParamNullable.kt
new file mode 100644
index 00000000000..447be6bbfaa
--- /dev/null
+++ b/compiler/testData/readClass/ReturnTypeClassParamNullable.kt
@@ -0,0 +1,6 @@
+namespace test
+
+import java.util.List
+import java.util.ArrayList
+
+fun ffgg(): List<String?> = ArrayList()