Added unit tests toJson and toXml.

Author: javadev

src/test/java/com/github/underscore/LodashTest.java

@@ -499,7 +499,8 @@ void fetchGet() {
     void downloadUrl() throws IOException {
         long result =
                 U.downloadUrl(
-                        "https://support.oneskyapp.com/hc/en-us/article_attachments/202761627/example_1.json", "test.json");
+                        "https://support.oneskyapp.com/hc/en-us/article_attachments/202761627/example_1.json",
+                        "test.json");
         assertEquals(65, result);
     }
 
@@ -643,6 +644,39 @@ void fetchWrongUrlWithRetry() {
                 UnsupportedOperationException.class, () -> U.fetch("ttt", 30000, 30000, 1, 100));
     }
 
+    @Test
+    void toJson() {
+        Map<String, Object> map = U.newLinkedHashMap();
+        map.put(null, 3);
+        assertEquals("{\n  \"null\": 3\n}", U.toJson(map));
+        Map<Object, Object> map2 = U.newLinkedHashMap();
+        map2.put(1, 3);
+        assertEquals("{\n  \"1\": 3\n}", U.toJson(map2));
+        Map<Object, Object> map3 = U.newLinkedHashMap();
+        map3.put(true, 3);
+        assertEquals("{\n  \"true\": 3\n}", U.toJson(map3));
+    }
+
+    @Test
+    void toXml() {
+        Map<String, Object> map = U.newLinkedHashMap();
+        map.put(null, 3);
+        assertEquals(
+                "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<null number=\"true\">3</null>",
+                U.toXml(map));
+        Map<Object, Object> map2 = U.newLinkedHashMap();
+        map2.put(1, 3);
+        assertEquals(
+                "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+                        + "<__GE__ number=\"true\">3</__GE__>",
+                U.toXml(map2));
+        Map<Object, Object> map3 = U.newLinkedHashMap();
+        map3.put(true, 3);
+        assertEquals(
+                "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<true number=\"true\">3</true>",
+                U.toXml(map3));
+    }
+
     @Test
     void xmlToJson() {
         assertEquals(
@@ -662,8 +696,9 @@ void xmlToJson() {
                         + "  ],\n"
                         + "  \"#omit-xml-declaration\": \"yes\"\n"
                         + "}",
-                U.xmlToJson("<root><element>1</element><element>2</element></root>",
-                    Json.JsonStringBuilder.Step.TWO_SPACES));
+                U.xmlToJson(
+                        "<root><element>1</element><element>2</element></root>",
+                        Json.JsonStringBuilder.Step.TWO_SPACES));
         assertEquals(
                 "{\n"
                         + "  \"root\": [\n"