BAEL-1217 Guide to Spring Type Conversions

spring-boot/src/test/java/org/baeldung/converter/CustomConverterTest.java

@@ -0,0 +1,45 @@
+package org.baeldung.converter;
+
+import com.baeldung.toggle.Employee;
+import org.baeldung.Application;
+import org.baeldung.domain.Modes;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.core.convert.ConversionService;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+
+import java.math.BigDecimal;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(classes = Application.class)
+@WebAppConfiguration
+public class CustomConverterTest {
+
+    @Autowired
+    ConversionService conversionService;
+
+    @Test
+    public void whenConvertStringToIntegerUsingDefaultConverter_thenSuccess() {
+        System.out.println(conversionService.convert("25", Integer.class));
+    }
+
+    @Test
+    public void whenConvertStringToEmployee_thenSuccess() {
+        System.out.println(conversionService.convert("1,50000.00", Employee.class));
+    }
+
+    @Test
+    public void whenConvertStringToEnum_thenSuccess() {
+        System.out.println(conversionService.convert("ALPHA", Modes.class));
+    }
+
+    @Test
+    public void whenConvertingToBigDecimalUsingGenericConverter_thenSuccess() {
+        System.out.println(conversionService.convert(Integer.valueOf(11), BigDecimal.class));
+        System.out.println(conversionService.convert(Double.valueOf(25.23), BigDecimal.class));
+        System.out.println(conversionService.convert("2.32", BigDecimal.class));
+    }
+}