type converter : converter test

typeconverter/src/main/java/hello/typeconverter/converter/IntegerToStringConverter.java

@@ -0,0 +1,14 @@
+package hello.typeconverter.converter;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.core.convert.converter.Converter;
+
+@Slf4j
+public class IntegerToStringConverter implements Converter<Integer, String> {
+
+    @Override
+    public String convert(Integer source) {
+        log.info("convert source={}", source);
+        return String.valueOf(source);
+    }
+}

typeconverter/src/main/java/hello/typeconverter/converter/IpPortToStringConverter.java

@@ -0,0 +1,17 @@
+package hello.typeconverter.converter;
+
+import hello.typeconverter.type.IpPort;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.core.convert.converter.Converter;
+
+@Slf4j
+public class IpPortToStringConverter implements Converter<IpPort, String> {
+
+    @Override
+    public String convert(IpPort source) {
+        log.info("convert source={}", source);
+
+        // IpPort 객체 -> "127.0.0.1:8080"
+        return source.getIp() + ":" + source.getPort();
+    }
+}

typeconverter/src/main/java/hello/typeconverter/converter/StringToIntegerConverter.java

@@ -0,0 +1,14 @@
+package hello.typeconverter.converter;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.core.convert.converter.Converter;
+
+@Slf4j
+public class StringToIntegerConverter implements Converter<String, Integer> {
+
+    @Override
+    public Integer convert(String source) {
+        log.info("convert source={}", source);
+        return Integer.valueOf(source);
+    }
+}

typeconverter/src/main/java/hello/typeconverter/converter/StringToIpPortConverter.java

@@ -0,0 +1,19 @@
+package hello.typeconverter.converter;
+
+import hello.typeconverter.type.IpPort;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.core.convert.converter.Converter;
+
+@Slf4j
+public class StringToIpPortConverter implements Converter<String, IpPort> {
+
+    @Override
+    public IpPort convert(String source) {
+        log.info("convert source={}", source);
+        // "127.0.0.1:8080" -> IpPort 객채
+        String[] split = source.split(":");
+        String ip = split[0];
+        int port = Integer.parseInt(split[1]);
+        return new IpPort(ip, port);
+    }
+}

typeconverter/src/main/java/hello/typeconverter/type/IpPort.java

@@ -0,0 +1,16 @@
+package hello.typeconverter.type;
+
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+
+@Getter
+@EqualsAndHashCode
+public class IpPort {
+    private String ip;
+    private int port;
+
+    public IpPort(String ip, int port) {
+        this.ip = ip;
+        this.port = port;
+    }
+}

typeconverter/src/test/java/hello/typeconverter/conveter/ConverterTest.java

@@ -0,0 +1,44 @@
+package hello.typeconverter.conveter;
+
+import hello.typeconverter.converter.IntegerToStringConverter;
+import hello.typeconverter.converter.IpPortToStringConverter;
+import hello.typeconverter.converter.StringToIntegerConverter;
+import hello.typeconverter.converter.StringToIpPortConverter;
+import hello.typeconverter.type.IpPort;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.*;
+
+public class ConverterTest {
+
+    @Test
+    void stringToInteger() {
+        StringToIntegerConverter converter = new StringToIntegerConverter();
+        Integer result = converter.convert("10");
+        assertThat(result).isEqualTo(10);
+    }
+
+    @Test
+    void integerToString() {
+        IntegerToStringConverter converter = new IntegerToStringConverter();
+        String result = converter.convert(10);
+        assertThat(result).isEqualTo("10");
+    }
+
+    @Test
+    void ipPortToString() {
+        IpPortToStringConverter converter = new IpPortToStringConverter();
+        IpPort source = new IpPort("127.0.0.1", 8080);
+        String result = converter.convert(source);
+        assertThat(result).isEqualTo("127.0.0.1:8080");
+    }
+
+    @Test
+    void stringToIpPort() {
+        StringToIpPortConverter converter = new StringToIpPortConverter();
+        String source = "127.0.0.1:8080";
+        IpPort result = converter.convert(source);
+        assertThat(result).isEqualTo(new IpPort("127.0.0.1", 8080));
+    }
+}