1 files changed, 43 insertions, 0 deletions
diff --git a/Test/dafny0/ISets.dfy b/Test/dafny0/ISets.dfy
new file mode 100644
index 00000000..703039c8
--- /dev/null
+++ b/Test/dafny0/ISets.dfy
@@ -0,0 +1,43 @@
+// RUN: %dafny /compile:0 /print:"%t.print" /dprint:"%t.dprint" "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+
+ghost method M()
+{
+   ghost var s := iset{2};
+   // test "in"
+   if(2 in s)
+   {
+   }
+   else
+   { assert false; }
+   // test "!in"
+   if(3 !in s)
+   {
+   }
+   else
+   { assert false; }
+   
+   if(s == iset{2})
+   {
+   }
+   else
+   { assert false; }
+}
+
+ghost method m1() {
+ var s1:iset<int> := iset{}; // the empty set   
+ var s2 := iset{1, 2, 3}; // set contains exactly 1, 2, and 3   
+ assert s2 == iset{1,1,2,3,3,3,3}; // same as before   
+ var s3, s4 := iset{1,2}, iset{1,4};
+
+ assert s2 + s4 == iset{1,2,3,4}; // set union   
+ assert s2 * s3 == iset{1,2} && s2 * s4 == iset{1}; // set intersection   
+ assert s2 - s3 == iset{3}; // set difference
+
+ assert (iset x | x in s2 :: x+1) == iset{2,3,4}; // set comprehension
+ assert 17 in (iset x: int | true :: x); // set comprehension
+
+ assert (imap x: int | true :: x+1)[14] == 15;
+}
+
+