1 files changed, 43 insertions, 0 deletions
diff --git a/asm/src/test/java/org/objectweb/asm/signature/SignatureWriterTest.java b/asm/src/test/java/org/objectweb/asm/signature/SignatureWriterTest.java
index be1ba012..e9aefa62 100644
--- a/asm/src/test/java/org/objectweb/asm/signature/SignatureWriterTest.java
+++ b/asm/src/test/java/org/objectweb/asm/signature/SignatureWriterTest.java
@@ -29,6 +29,7 @@ package org.objectweb.asm.signature;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
+import java.util.stream.IntStream;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.MethodSource;
 import org.objectweb.asm.test.AsmTest;
@@ -62,4 +63,46 @@ class SignatureWriterTest extends AsmTest {
 
     assertEquals(signature, signatureWriter.toString());
   }
+
+  static IntStream deepSignatures() {
+    return IntStream.range(0, 48);
+  }
+
+  @ParameterizedTest
+  @MethodSource("deepSignatures")
+  void testWrite_deepSignature(int depth) {
+    SignatureWriter signatureWriter = new SignatureWriter();
+    String expected = writeDeepSignature(signatureWriter, depth);
+    assertEquals(expected, signatureWriter.toString(), "depth=" + depth);
+  }
+
+  private String writeDeepSignature(SignatureVisitor signatureVisitor, int maxDepth) {
+    StringBuilder expected = new StringBuilder();
+    writeDeepSignatureInner(signatureVisitor, expected, 0, maxDepth);
+    return expected.toString();
+  }
+
+  private void writeDeepSignatureInner(SignatureVisitor signatureVisitor, StringBuilder expected, int currentDepth, int maxDepth) {
+    signatureVisitor.visitClassType(TEST_GENERIC);
+    expected.append('L' + TEST_GENERIC);
+    if (currentDepth < maxDepth) {
+      expected.append("<L" + TEST_OPEN + ';');
+      SignatureVisitor v = signatureVisitor.visitTypeArgument('=');
+      v.visitClassType(TEST_OPEN);
+      v.visitEnd();
+
+      writeDeepSignatureInner(signatureVisitor.visitTypeArgument('='), expected, currentDepth + 1, maxDepth);
+
+      v = signatureVisitor.visitTypeArgument('=');
+      v.visitClassType(TEST_CLOSE);
+      v.visitEnd();
+      expected.append('L' + TEST_CLOSE + ";>");
+    }
+    signatureVisitor.visitEnd();
+    expected.append(';');
+  }
+
+  private static final String TEST_OPEN = "TestOpen";
+  private static final String TEST_GENERIC = "TestGeneric";
+  private static final String TEST_CLOSE = "TestClose";
 }