1 files changed, 43 insertions, 2 deletions
diff --git a/tests/collections/ttables.nim b/tests/collections/ttables.nim
index bba95c1f1..9b7506d1a 100644
--- a/tests/collections/ttables.nim
+++ b/tests/collections/ttables.nim
@@ -173,9 +173,14 @@ block tableconstr:
 block ttables2:
   proc TestHashIntInt() =
     var tab = initTable[int,int]()
-    for i in 1..1_000_000:
+    when defined(nimTestsTablesDisableSlow):
+      # helps every single time when this test needs to be debugged
+      let n = 1_000
+    else:
+      let n = 1_000_000
+    for i in 1..n:
       tab[i] = i
-    for i in 1..1_000_000:
+    for i in 1..n:
       var x = tab[i]
       if x != i : echo "not found ", i
 
@@ -395,3 +400,39 @@ block tablesref:
   orderedTableSortTest()
   echo "3"
 
+
+block: # https://github.com/nim-lang/Nim/issues/13496
+  template testDel(body) =
+    block:
+      body
+      when t is CountTable|CountTableRef:
+        t.inc(15, 1)
+        t.inc(19, 2)
+        t.inc(17, 3)
+        t.inc(150, 4)
+        t.del(150)
+      else:
+        t[15] = 1
+        t[19] = 2
+        t[17] = 3
+        t[150] = 4
+        t.del(150)
+      doAssert t.len == 3
+      doAssert sortedItems(t.values) == @[1, 2, 3]
+      doAssert sortedItems(t.keys) == @[15, 17, 19]
+      doAssert sortedPairs(t) == @[(15, 1), (17, 3), (19, 2)]
+      var s = newSeq[int]()
+      for v in t.values: s.add(v)
+      assert s.len == 3
+      doAssert sortedItems(s) == @[1, 2, 3]
+      when t is OrderedTable|OrderedTableRef:
+        doAssert toSeq(t.keys) == @[15, 19, 17]
+        doAssert toSeq(t.values) == @[1,2,3]
+        doAssert toSeq(t.pairs) == @[(15, 1), (19, 2), (17, 3)]
+
+  testDel(): (var t: Table[int, int])
+  testDel(): (let t = newTable[int, int]())
+  testDel(): (var t: OrderedTable[int, int])
+  testDel(): (let t = newOrderedTable[int, int]())
+  testDel(): (var t: CountTable[int])
+  testDel(): (let t = newCountTable[int]())