Java8ReplaceMapGetInspection: missing statements.length check is added (EA-91331)

java/java-analysis-impl/src/com/intellij/codeInspection/java18api/Java8ReplaceMapGetInspection.java

@@ -132,6 +132,7 @@ public class Java8ReplaceMapGetInspection extends BaseJavaBatchLocalInspectionTo
       if (!(statement instanceof PsiBlockStatement)) return null;
       // like val = new ArrayList<>(); map.put(key, val);
       PsiStatement[] statements = ((PsiBlockStatement)statement).getCodeBlock().getStatements();
+      if (statements.length != 2) return null;
       putCall = extractPutCall(statements[1]);
       if (putCall == null) return null;
       PsiExpression[] putArguments = putCall.getArgumentList().getExpressions();

java/java-tests/testData/inspection/java8MapGet/beforeComputeIfAbsentAdditionalStatement.java

@@ -0,0 +1,16 @@
+// "Replace with 'computeIfAbsent' method call" "false"
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public class Main {
+  public void testMap(Map<String, List<String>> map, String key, String value) {
+    List<String> list = map.get(key);
+    if(list == nul<caret>l) {
+      list = new ArrayList<>();
+      map.put(key, list);
+      System.out.println("Added new!");
+    }
+    list.add(value);
+  }
+}

java/java-tests/testData/inspection/java8MapGet/beforeComputeIfAbsentIncomplete.java

@@ -0,0 +1,13 @@
+// "Replace with 'computeIfAbsent' method call" "false"
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public class Main {
+  public void testMap(Map<String, List<String>> map, String key, String value) {
+    List<String> list = map.get(key);
+    if(list == nul<caret>l) {
+    }
+    list.add(value);
+  }
+}