[spec] added tests for repeated declaration of a variable in same scope

git-svn-id: http://svn.pugscode.org/pugs@21069 c213334d-75ef-0310-aa23-eaa082d1ae64

S04-declarations/multiple.t

@@ -0,0 +1,19 @@
+use v6;
+use Test;
+plan 3;
+
+# L<S04/The Relationship of Blocks and Declarations/"If you declare a lexical 
+#  twice in the same scope">
+
+eval_lives_ok 'my $x; my $x', 
+              'it is legal to declare my $x twice in the same scope.';
+
+eval_lives_ok 'state $x; state $x', 
+              'it is legal to declare state $x twice in the same scope.';
+
+{
+    my $x = 2;
+    my $y := $x;
+    my $x = 3;
+    is $y, 3, 'Two lexicals with the name in same scope are the same variable';
+}