tests: add tests for multi-iterators

[nit.git] / lib / more_collections.nit

diff --git a/lib/more_collections.nit b/lib/more_collections.nit
index 019dc67..9fb05bb 100644 (file)
--- a/lib/more_collections.nit
+++ b/lib/more_collections.nit
@@ -97,6 +97,13 @@ class HashMap2[K1, K2, V]
                level2.keys.remove(k2)
        end
 
+       # Is there a value at `k1, k2`?
+       fun has(k1: K1, k2: K2): Bool
+       do
+               if not level1.keys.has(k1) then return false
+               return level1[k1].keys.has(k2)
+       end
+
        # Remove all items
        fun clear do level1.clear
 end
@@ -145,6 +152,13 @@ class HashMap3[K1, K2, K3, V]
                level2.remove_at(k2, k3)
        end
 
+       # Is there a value at `k1, k2, k3`?
+       fun has(k1: K1, k2: K2, k3: K3): Bool
+       do
+               if not level1.keys.has(k1) then return false
+               return level1[k1].has(k2, k3)
+       end
+
        # Remove all items
        fun clear do level1.clear
 end