Polishing

spring-expression/src/test/java/org/springframework/expression/spel/PropertyAccessTests.java

@@ -21,6 +21,7 @@ import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 
+import org.assertj.core.api.ThrowableTypeAssert;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.core.convert.TypeDescriptor;
@@ -83,11 +84,11 @@ class PropertyAccessTests extends AbstractExpressionTests {
 	void accessingOnNullObject() {
 		SpelExpression expr = (SpelExpression) parser.parseExpression("madeup");
 		EvaluationContext context = new StandardEvaluationContext(null);
-		assertThatExceptionOfType(SpelEvaluationException.class)
+		assertThatSpelEvaluationException()
 			.isThrownBy(() -> expr.getValue(context))
 			.extracting(SpelEvaluationException::getMessageCode).isEqualTo(SpelMessage.PROPERTY_OR_FIELD_NOT_READABLE_ON_NULL);
 		assertThat(expr.isWritable(context)).isFalse();
-		assertThatExceptionOfType(SpelEvaluationException.class)
+		assertThatSpelEvaluationException()
 			.isThrownBy(() -> expr.setValue(context, "abc"))
 			.extracting(SpelEvaluationException::getMessageCode).isEqualTo(SpelMessage.PROPERTY_OR_FIELD_NOT_WRITABLE_ON_NULL);
 	}
@@ -117,8 +118,7 @@ class PropertyAccessTests extends AbstractExpressionTests {
 		assertThat((int) i).isEqualTo(99);
 
 		// Cannot set it to a string value
-		assertThatExceptionOfType(EvaluationException.class).isThrownBy(() ->
-				flibbleexpr.setValue(ctx, "not allowed"));
+		assertThatSpelEvaluationException().isThrownBy(() -> flibbleexpr.setValue(ctx, "not allowed"));
 		// message will be: EL1063E:(pos 20): A problem occurred whilst attempting to set the property
 		// 'flibbles': 'Cannot set flibbles to an object of type 'class java.lang.String''
 		// System.out.println(e.getMessage());
@@ -173,8 +173,7 @@ class PropertyAccessTests extends AbstractExpressionTests {
 	@Test
 	void noGetClassAccess() {
 		EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
-		assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
-				parser.parseExpression("'a'.class.name").getValue(context));
+		assertThatSpelEvaluationException().isThrownBy(() -> parser.parseExpression("'a'.class.name").getValue(context));
 	}
 
 	@Test
@@ -187,8 +186,9 @@ class PropertyAccessTests extends AbstractExpressionTests {
 		target.setName("p2");
 		assertThat(expr.getValue(context, target)).isEqualTo("p2");
 
-		assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
-				parser.parseExpression("name='p3'").getValue(context, target));
+		assertThatSpelEvaluationException()
+				.isThrownBy(() -> parser.parseExpression("name='p3'").getValue(context, target))
+				.extracting(SpelEvaluationException::getMessageCode).isEqualTo(SpelMessage.PROPERTY_OR_FIELD_NOT_WRITABLE);
 	}
 
 	@Test
@@ -201,8 +201,9 @@ class PropertyAccessTests extends AbstractExpressionTests {
 		RecordPerson target2 = new RecordPerson("p2");
 		assertThat(expr.getValue(context, target2)).isEqualTo("p2");
 
-		assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
-				parser.parseExpression("name='p3'").getValue(context, target2));
+		assertThatSpelEvaluationException()
+				.isThrownBy(() -> parser.parseExpression("name='p3'").getValue(context, target2))
+				.extracting(SpelEvaluationException::getMessageCode).isEqualTo(SpelMessage.PROPERTY_OR_FIELD_NOT_WRITABLE);
 	}
 
 	@Test
@@ -248,7 +249,7 @@ class PropertyAccessTests extends AbstractExpressionTests {
 	void propertyAccessWithoutMethodResolver() {
 		EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
 		Person target = new Person("p1");
-		assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
+		assertThatSpelEvaluationException().isThrownBy(() ->
 				parser.parseExpression("name.substring(1)").getValue(context, target));
 	}
 
@@ -274,12 +275,17 @@ class PropertyAccessTests extends AbstractExpressionTests {
 	void propertyAccessWithArrayIndexOutOfBounds() {
 		EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
 		Expression expression = parser.parseExpression("stringArrayOfThreeItems[3]");
-		assertThatExceptionOfType(SpelEvaluationException.class)
+		assertThatSpelEvaluationException()
 			.isThrownBy(() -> expression.getValue(context, new Inventor()))
 			.extracting(SpelEvaluationException::getMessageCode).isEqualTo(SpelMessage.ARRAY_INDEX_OUT_OF_BOUNDS);
 	}
 
 
+	private ThrowableTypeAssert<SpelEvaluationException> assertThatSpelEvaluationException() {
+		return assertThatExceptionOfType(SpelEvaluationException.class);
+	}
+
+
 	// This can resolve the property 'flibbles' on any String (very useful...)
 	private static class StringyPropertyAccessor implements PropertyAccessor {