basic tests for version literals and Version objects

S02-literals/version.t

@@ -0,0 +1,26 @@
+use v6;
+use Test;
+
+is v1.2.3, 'v1.2.3', 'version literal stringification round-trips';
+is v1.2.3+, 'v1.2.3+', 'version literal stringification with + round-trips';
+is v1.*.3,  'v1.*.3',  'version literal stringification with * round-trips';
+ok  v1.2.3 eqv v1.2.3, 'eqv works on version literals (+)';
+nok v5.2.3 eqv v1.2.3, 'eqv works on version literals (-)';
+nok v1.2+  eqv v1.2,   '+ makes a difference in eqv';
+ok  v1.2   === v1.2,   'version literals are value types';
+nok v1.2   === v1.3,   '=== (-)';
+ok  v1.2   ~~  v1.2,   'smart-matching (same)';
+nok v1.2   ~~  v6.2,   'smart-matching (different)';
+ok  v1.2.0 ~~  v1.2,   'smart-matching treats trailing 0 correctly (left)';
+ok  v1.2   ~~  v1.2.0, 'smart-matching treats trailing 0 correctly (right)';
+ok  v1.2   ~~  v1.0+,  'smart-matching and plus (+1)';
+ok  v1.2   ~~  v1.2+,  'smart-matching and plus (+2)';
+ok  v1.2   ~~  v1.3+,  'smart-matching and plus (-)';
+ok  v1.2.3 ~~  v1,     'smart-matching only cares about the length of the LHS';
+nok v1.2.3 ~~  v2,     '... but it can still fail';
+is  v1.2  cmp  v1.2,   Same,     'cmp: Same';
+is  v1.2  cmp  v3.2,   Increase, 'cmp: Increase';
+is  v1.2  cmp  v0.2,   Decrease, 'cmp: Decrease';
+
+done;
+