some test cleanups & category reorganization (#22010)

* clean up some test categories

* mention exact slice issue

* magics into system

* move trangechecks into overflow

* move tmemory to system

* try fix CI

* try fix CI

* final CI fix

tests/types/tisop.nim

@@ -1,48 +0,0 @@
-discard """
-  disabled: true
-"""
-
-import typetraits
-
-type
-  TRecord = (tuple) or (object)
-
-  TFoo[T, U] = object
-    x: int
-
-    when T is string:
-      y: float
-    else:
-      y: string
-
-    when U is TRecord:
-      z: float
-
-  E = enum A, B, C
-
-macro m(t: typedesc): typedesc =
-  if t is enum:
-    result = string
-  else:
-    result = int
-
-var f: TFoo[int, int]
-static: doAssert(f.y.type.name == "string")
-
-when compiles(f.z):
-  {.error: "Foo should not have a `z` field".}
-
-proc p(a, b: auto) =
-  when a.type is int:
-    static: doAssert false
-
-  var f: TFoo[m(a.type), b.type]
-  static:
-    doAssert f.x.type.name == "int"
-    echo  f.y.type.name
-    doAssert f.y.type.name == "float"
-    echo  f.z.type.name
-    doAssert f.z.type.name == "float"
-
-p(A, f)
-

tests/types/tisopr.nim

@@ -135,3 +135,33 @@ block:
   let Q = MyObj[P](y: 2)
   doAssert($Q  == "(y: 2)")
 
+block: # previously tisop.nim
+  type
+    TRecord = (tuple) or (object)
+    TFoo[T, U] = object
+      x: int
+      when T is string:
+        y: float
+      else:
+        y: string
+      when U is TRecord:
+        z: float
+    E = enum A, B, C
+  template m(t: typedesc): typedesc =
+    when t is enum:
+      string
+    else:
+      int
+  var f: TFoo[int, int]
+  static: doAssert(typeof(f.y) is string)
+  when compiles(f.z):
+    {.error: "Foo should not have a `z` field".}
+  proc p(a, b: auto) =
+    when typeof(a) is int:
+      static: doAssert false
+    var f: TFoo[m(a.typeof), b.typeof]
+    static:
+      doAssert f.x.typeof is int
+      doAssert f.y.typeof is float
+      doAssert f.z.typeof is float
+  p(A, f)