Tests for some first/last stuff.

From @spacether.

src/test/java/com/samskivert/mustache/SharedTests.java

@@ -473,6 +473,26 @@ public abstract class SharedTests extends GWTTestCase
              context("things", Arrays.asList("foo")));
     }
 
+    @Test public void testFirstLastCombo () {
+        test("FIRST_and_LAST", "{{#things}}{{#-first}}FIRST{{/-first}}{{this}}{{#-last}}LAST{{/-last}}{{/things}}",
+             context("things", Arrays.asList("_and_")));
+    }
+
+    @Test public void testInverseFirstLastCombo () {
+        test("_and_", "{{#things}}{{^-first}}NOT-FIRST{{/-first}}{{this}}{{^-last}}NOT-LAST{{/-last}}{{/things}}",
+             context("things", Arrays.asList("_and_")));
+    }
+
+    @Test public void testNotFirst () {
+        test("1,2,3", "{{#things}}{{^-first}},{{/-first}}{{this}}{{/things}}",
+             context("things", Arrays.asList("1", "2", "3")));
+    }
+
+    @Test public void testNotLast () {
+        test("1,2,3", "{{#things}}{{this}}{{^-last}},{{/-last}}{{/things}}",
+             context("things", Arrays.asList("1", "2", "3")));
+    }
+
     @Test public void testIndex () {
         test("123", "{{#things}}{{-index}}{{/things}}",
              context("things", Arrays.asList("foo", "bar", "baz")));