write test to params's accept array string

Author: Sprokof

src/test/java/com/amadeus/ParamsTest.java

@@ -5,6 +5,8 @@
 
 import org.junit.jupiter.api.Test;
 
+import java.util.List;
+
 public class ParamsTest {
   /**
    * Params Test.
@@ -22,6 +24,11 @@ public class ParamsTest {
     assertEquals(params.toQueryString(), "bar=234&foo=123");
   }
 
+  @Test public void testToQueryStringWithList(){
+    Params params = Params.with("foo", List.of("id1", "id2"));
+    assertEquals(params.toQueryString(), "foo=id1%2Cid2");
+  }
+
   @Test public void testToQueryStringWithEncodingError() {
     Params params = Params.with("foo", "123");
     params.encoding = "foobar";