Fix flaky tests in StreamsDemoTest by sorting serialized fields

Author: lbh930

src/test/java/net/openhft/chronicle/wire/domestic/streaming/streams/StreamsDemoTest.java

@@ -53,7 +53,12 @@ void streamTypeMarketDataSimple() {
                 .map(Object::toString)
                 .collect(Collectors.joining(","));
 
-        assertEquals("!MarketData {\n" +
+        java.util.function.Function<String, String> sort = str -> java.util.Arrays.stream(str.split("\n"))
+                .map(l -> l.replaceAll(",$", ""))
+                .sorted()
+                .collect(java.util.stream.Collectors.joining("\n"));
+
+        String expected = "!MarketData {\n" +
                 "  symbol: MSFT,\n" +
                 "  last: 100.0,\n" +
                 "  high: 110.0,\n" +
@@ -70,22 +75,27 @@ void streamTypeMarketDataSimple() {
                 "  last: 101.0,\n" +
                 "  high: 110.0,\n" +
                 "  low: 90.0\n" +
-                "}\n", s);
+                "}\n";
+        assertEquals(sort.apply(expected), sort.apply(s));
     }
 
     @Test
     void streamTypeMarketDataSimpleWIthInvalid() {
         ClassAliasPool.CLASS_ALIASES.addAlias(MarketData.class);
         MarketData invalid = new MarketData("invalid", 0, 0, 0);
         // toString() still works.
-        assertEquals("" +
+        java.util.function.Function<String, String> sort = s -> java.util.Arrays.stream(s.split("\n"))
+                .map(l -> l.replaceAll(",$", ""))
+                .sorted()
+                .collect(java.util.stream.Collectors.joining("\n"));
+        String expected = "" +
                         "!MarketData {\n" +
                         "  symbol: invalid,\n" +
                         "  last: 0.0,\n" +
                         "  high: 0.0,\n" +
                         "  low: 0.0\n" +
-                        "}\n",
-                invalid.toString());
+                        "}\n";
+        assertEquals(sort.apply(expected), sort.apply(invalid.toString()));
 
         try {
             MarshallableIn wire = createThenValueOuts(