Fix issue with format string in json output

1 files changed, 13 insertions, 0 deletions

diff --git a/javaparser-testing/src/test/java/com/github/javaparser/printer/JsonPrinterTest.java b/javaparser-testing/src/test/java/com/github/javaparser/printer/JsonPrinterTest.java
index 7170f3faf..4a78e212b 100644
--- a/javaparser-testing/src/test/java/com/github/javaparser/printer/JsonPrinterTest.java
+++ b/javaparser-testing/src/test/java/com/github/javaparser/printer/JsonPrinterTest.java
@@ -1,6 +1,7 @@
 package com.github.javaparser.printer;
 
 import com.github.javaparser.JavaParser;
+import com.github.javaparser.ast.CompilationUnit;
 import com.github.javaparser.ast.expr.Expression;
 import org.junit.Test;
 
@@ -26,4 +27,16 @@ public class JsonPrinterTest {
 
         assertEquals("{\"operator\":\"PLUS\",\"left\":{\"value\":\"1\"},\"right\":{\"value\":\"1\"}}", output);
     }
+    
+    @Test
+    public void issue1338() {
+        String code = "class Test {" +
+                "  public void method() {" +
+                "    String.format(\"I'm using %s\", \"JavaParser\");" +
+                "  }" +
+                "}";
+        CompilationUnit unit = JavaParser.parse(code);
+        JsonPrinter printer = new JsonPrinter(true);
+        printer.output(unit);
+    }
 }
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