Add tests for binding to enum with different locale

See gh-12213

spring-boot/src/test/java/org/springframework/boot/bind/RelaxedConversionServiceTests.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.bind;
+
+import java.util.Locale;
+
+import org.junit.Test;
+
+import org.springframework.core.convert.support.DefaultConversionService;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link RelaxedConversionService}.
+ *
+ * @author Madhura Bhave
+ */
+public class RelaxedConversionServiceTests {
+
+	private RelaxedConversionService conversionService = new RelaxedConversionService(new DefaultConversionService());
+
+	@Test
+	public void conversionServiceShouldAlwaysUseLocaleEnglish() {
+		Locale.setDefault(new Locale("tr"));
+		TestEnum result = this.conversionService.convert("accept-case-insensitive-properties",
+				TestEnum.class);
+		assertThat(result.equals(TestEnum.ACCEPT_CASE_INSENSITIVE_PROPERTIES));
+	}
+
+	enum TestEnum {
+
+		ACCEPT_CASE_INSENSITIVE_PROPERTIES
+
+	}
+
+}