3 files changed, 52 insertions, 0 deletions
diff --git a/java/typeMigration/testData/refactoring/typeMigration/t23/after/Test.items b/java/typeMigration/testData/refactoring/typeMigration/t23/after/Test.items
new file mode 100644
index 000000000000..99507129472e
--- /dev/null
+++ b/java/typeMigration/testData/refactoring/typeMigration/t23/after/Test.items
@@ -0,0 +1,22 @@
+Types:
+PsiField:f : HashMap<java.lang.String,java.util.List<java.lang.String>>
+PsiLocalVariable:set : java.util.List<java.lang.String>
+PsiMethodCallExpression:f.get(s) : java.util.List<java.lang.String>
+PsiMethodCallExpression:f.put(s, set) : java.util.List<java.lang.String>
+PsiMethodCallExpression:set.add(s1) : boolean
+PsiReferenceExpression:f : HashMap<java.lang.String,java.util.List<java.lang.String>>
+PsiReferenceExpression:f : HashMap<java.lang.String,java.util.List<java.lang.String>>
+PsiReferenceExpression:set : java.util.List<java.lang.String>
+PsiReferenceExpression:set : java.util.List<java.lang.String>
+PsiReferenceExpression:set : java.util.List<java.lang.String>
+PsiReferenceExpression:set : java.util.List<java.lang.String>
+
+Conversions:
+f.get(s) -> $
+f.put(s, set) -> $
+set -> $
+set.add(s1) -> $
+
+New expression type changes:
+Fails:
+new HashSet<String>()->java.util.List<java.lang.String>
diff --git a/java/typeMigration/testData/refactoring/typeMigration/t23/after/test.java b/java/typeMigration/testData/refactoring/typeMigration/t23/after/test.java
new file mode 100644
index 000000000000..df9ad40dc0e9
--- /dev/null
+++ b/java/typeMigration/testData/refactoring/typeMigration/t23/after/test.java
@@ -0,0 +1,15 @@
+import java.util.*;
+class Test {
+    HashMap<String, List<String>> f;
+
+    void foo(String s, String s1) {
+      List<String> set = f.get(s);
+      if (set == null) {
+        set = new HashSet<String>();
+        f.put(s, set);
+      }
+      set.add(s1);
+    }
+}
+
+class HashMap<K, V> extends java.util.HashMap<K, V>{}
+\ No newline at end of file
diff --git a/java/typeMigration/testData/refactoring/typeMigration/t23/before/test.java b/java/typeMigration/testData/refactoring/typeMigration/t23/before/test.java
new file mode 100644
index 000000000000..a99eafcc46dc
--- /dev/null
+++ b/java/typeMigration/testData/refactoring/typeMigration/t23/before/test.java
@@ -0,0 +1,15 @@
+import java.util.*;
+class Test {
+    HashMap<String, Set<String>> f;
+
+    void foo(String s, String s1) {
+      Set<String> set = f.get(s);
+      if (set == null) {
+        set = new HashSet<String>();
+        f.put(s, set);
+      }
+      set.add(s1);
+    }
+}
+
+class HashMap<K, V> extends java.util.HashMap<K, V>{}
+\ No newline at end of file