feat: Writing to file implemented

Author: quintesse

src/main/java/org/codejive/properties/Properties.java

@@ -66,7 +66,9 @@ public String remove(Object key) {
     }
 
     public void load(Path file) throws IOException {
-        load(Files.newBufferedReader(file));
+        try (Reader br = Files.newBufferedReader(file)) {
+            load(br);
+        }
     }
 
     public void load(Reader reader) throws IOException {
@@ -101,8 +103,14 @@ public static Properties loadProperties(Reader reader) throws IOException {
     }
 
     public void store(Path file) throws IOException {
-        store(Files.newBufferedWriter(file, StandardOpenOption.TRUNCATE_EXISTING));
+        try (Writer bw = Files.newBufferedWriter(file, StandardOpenOption.TRUNCATE_EXISTING)) {
+            store(bw);
+        }
     }
 
-    public void store(Writer writer) throws IOException {}
+    public void store(Writer writer) throws IOException {
+        for (PropertiesParser.Token token : tokens) {
+            writer.write(token.getRaw());
+        }
+    }
 }

src/test/java/org/codejive/properties/TestProperties.java

@@ -3,7 +3,9 @@
 import org.junit.jupiter.api.Test;
 
 import java.io.IOException;
+import java.io.StringWriter;
 import java.net.URISyntaxException;
+import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 
@@ -23,4 +25,13 @@ void testLoad() throws IOException, URISyntaxException {
         assertThat(p.values(), contains("simple", "value containing spaces", "and escapes\n\t\r\f", "everywhere",
                 "value", "one \n    two  \n\tthree", "\u1234"));
     }
+
+    @Test
+    void testStore() throws IOException, URISyntaxException {
+        Path f = Paths.get(getClass().getResource("/test.properties").toURI());
+        Properties p = Properties.loadProperties(f);
+        StringWriter sw = new StringWriter();
+        p.store(sw);
+        assertThat(sw.toString(), equalTo(new String(Files.readAllBytes(f))));
+    }
 }