[bugfix] Correct default serialization item separator.

Author: chris-evolvedbinary

exist-core/src/main/java/org/exist/xquery/functions/fn/FunSerialize.java

@@ -42,7 +42,7 @@
 
 public class FunSerialize extends BasicFunction {
 
-    private final static String DEFAULT_ITEM_SEPARATOR = "\n";
+    private final static String DEFAULT_ITEM_SEPARATOR = " ";
 
     public final static FunctionSignature[] signatures = {
         new FunctionSignature(

exist-core/src/test/xquery/xquery3/serialize.xql

@@ -214,8 +214,7 @@ function ser:serialize-empty-params() {
 };
 
 declare
-    %test:assertEquals("aaa
-bbb")
+    %test:assertEquals("aaa bbb")
 function ser:serialize-atomic() {
     let $nodes := ("aaa", "bbb")
     return
@@ -775,31 +774,3 @@ function ser:item-separator-text-method() {
     let $data := (1, 2)
     return ser:serialize-with-item-separator($data, "text")
 };
-
-declare
-    %test:assertEquals("1--2")
-function ser:item-separator-html-method() {
-    let $data := (1, 2)
-    return ser:serialize-with-item-separator($data, "html")
-};
-
-declare
-    %test:assertEquals("1--2")
-function ser:item-separator-xhtml-method() {
-    let $data := (1, 2)
-    return ser:serialize-with-item-separator($data, "xhtml")
-};
-
-declare
-    %test:assertEquals("1--2")
-function ser:item-separator-xml-method() {
-    let $data := (1, 2)
-    return ser:serialize-with-item-separator($data, "xml")
-};
-
-declare
-    %test:assertEquals("1--2")
-function ser:item-separator-adaptive-method() {
-    let $data := (1, 2)
-    return ser:serialize-with-item-separator($data, "adaptive")
-};