Fix nodelist replace bug

1 files changed, 20 insertions, 0 deletions

diff --git a/javaparser-testing/src/test/java/com/github/javaparser/ast/expr/MethodCallExprTest.java b/javaparser-testing/src/test/java/com/github/javaparser/ast/expr/MethodCallExprTest.java
new file mode 100644
index 000000000..1dfa18f64
--- /dev/null
+++ b/javaparser-testing/src/test/java/com/github/javaparser/ast/expr/MethodCallExprTest.java
@@ -0,0 +1,20 @@
+package com.github.javaparser.ast.expr;
+
+import org.junit.Test;
+
+import static com.github.javaparser.JavaParser.parseExpression;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class MethodCallExprTest {
+    
+    @Test
+    public void replaceLambdaIssue1290() {
+        MethodCallExpr methodCallExpr = parseExpression("callSomeFun(r -> r instanceof SomeType)").asMethodCallExpr();
+        LambdaExpr lambdaExpr = methodCallExpr.getArgument(0).asLambdaExpr();
+        MethodCallExpr lambdaWrapper = new MethodCallExpr("lambdaWrapper");
+        lambdaExpr.replace(lambdaWrapper);
+        
+        assertEquals(2, methodCallExpr.getChildNodes().size());
+    }
+
+}
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