From 107f47cfcf3894d014fdc7ead74a2399675f2d34 Mon Sep 17 00:00:00 2001
From: Sam Brannen <104798+sbrannen@users.noreply.github.com>
Date: Sat, 9 Mar 2024 13:46:39 +0100
Subject: [PATCH] Add tests for status quo for SpEL compiler

---
 .../spel/SpelCompilationCoverageTests.java    | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/spring-expression/src/test/java/org/springframework/expression/spel/SpelCompilationCoverageTests.java b/spring-expression/src/test/java/org/springframework/expression/spel/SpelCompilationCoverageTests.java
index 16b489c2a7..c7eced339d 100644
--- a/spring-expression/src/test/java/org/springframework/expression/spel/SpelCompilationCoverageTests.java
+++ b/spring-expression/src/test/java/org/springframework/expression/spel/SpelCompilationCoverageTests.java
@@ -536,6 +536,14 @@ public class SpelCompilationCoverageTests extends AbstractExpressionTests {
 			assertCanCompile(expression);
 			assertThat(expression.getValue(map)).isEqualTo(111);
 			assertThat(getAst().getExitDescriptor()).isEqualTo("Ljava/lang/Object");
+
+			// String key not enclosed in single quotes
+			expression = parser.parseExpression("[aaa]");
+
+			assertThat(expression.getValue(map)).isEqualTo(111);
+			assertCanCompile(expression);
+			assertThat(expression.getValue(map)).isEqualTo(111);
+			assertThat(getAst().getExitDescriptor()).isEqualTo("Ljava/lang/Object");
 		}
 
 		@Test
@@ -644,6 +652,19 @@ public class SpelCompilationCoverageTests extends AbstractExpressionTests {
 			assertThat(getAst().getExitDescriptor()).isEqualTo("I");
 		}
 
+		@Test
+		void indexIntoStringCannotBeCompiled() {
+			String text = "enigma";
+
+			// "g" is the 4th letter in "enigma" (index 3)
+			expression = parser.parseExpression("[3]");
+
+			assertThat(expression.getValue(text)).isEqualTo("g");
+			assertCannotCompile(expression);
+			assertThat(expression.getValue(text)).isEqualTo("g");
+			assertThat(getAst().getExitDescriptor()).isNull();
+		}
+
 		@Test
 		void indexIntoObject() {
 			TestClass6 tc = new TestClass6();