More descriptive names of test files (#9531)

* change generic `tissues` name to more specific
* change `tvarious` to more specific names

tests/overload/tissues.nim

@@ -1,185 +0,0 @@
-discard """
-  output: '''
-Version 2 was called.
-This has the highest precedence.
-This has the second-highest precedence.
-This has the lowest precedence.
-baseobj ==
-true
-even better! ==
-true
-done extraI=0
-test 0 complete, loops=0
-done extraI=1
-test 1.0 complete, loops=1
-done extraI=0
-done extraI passed 0
-test no extra complete, loops=2
-1
-'''
-"""
-
-
-# issue 4675
-import importA  # comment this out to make it work
-import importB
-
-var x: Foo[float]
-var y: Foo[float]
-let r = t1(x) + t2(y)
-
-
-
-# Bug: https://github.com/nim-lang/Nim/issues/4475
-# Fix: https://github.com/nim-lang/Nim/pull/4477
-proc test(x: varargs[string], y: int) = discard
-test(y = 1)
-
-
-
-# bug #2220
-when true:
-  type A[T] = object
-  type B = A[int]
-
-  proc q[X](x: X) =
-    echo "Version 1 was called."
-
-  proc q(x: B) =
-    echo "Version 2 was called."
-
-  q(B()) # This call reported as ambiguous.
-
-
-
-# bug #2219
-template testPred(a: untyped) =
-  block:
-    type A = object of RootObj
-    type B = object of A
-    type SomeA = A|A # A hack to make "A" a typeclass.
-
-    when a >= 3:
-      proc p[X: A](x: X) =
-        echo "This has the highest precedence."
-    when a == 2:
-      proc p[X: SomeA](x: X) =
-        echo "This has the second-highest precedence."
-    when a >= 1:
-      proc p[X](x: X) =
-        echo "This has the lowest precedence."
-
-    p(B())
-
-testPred(3)
-testPred(2)
-testPred(1)
-
-
-
-# bug #6526
-type
-  BaseObj = ref object of RootObj
-  DerivedObj = ref object of BaseObj
-  OtherDerivate = ref object of BaseObj
-
-proc `==`*[T1, T2: BaseObj](a: T1, b: T2): bool =
-  echo "baseobj =="
-  return true
-
-let a = DerivedObj()
-let b = DerivedObj()
-echo a == b
-
-proc `==`*[T1, T2: OtherDerivate](a: T1, b: T2): bool =
-  echo "even better! =="
-  return true
-
-let a2 = OtherDerivate()
-let b2 = OtherDerivate()
-echo a2 == b2
-
-
-
-# bug #2481
-import math
-
-template test(loopCount: int, extraI: int, testBody: untyped): typed =
-  block:
-    for i in 0..loopCount-1:
-      testBody
-    echo "done extraI=", extraI
-
-template test(loopCount: int, extraF: float, testBody: untyped): typed =
-  block:
-    test(loopCount, round(extraF).int, testBody)
-
-template test(loopCount: int, testBody: untyped): typed =
-  block:
-    test(loopCount, 0, testBody)
-    echo "done extraI passed 0"
-
-when isMainModule:
-  var
-    loops = 0
-
-  test 0, 0:
-    loops += 1
-  echo "test 0 complete, loops=", loops
-
-  test 1, 1.0:
-    loops += 1
-  echo "test 1.0 complete, loops=", loops
-
-  when true:
-    # when true we get the following compile time error:
-    #   b.nim(35, 6) Error: expression 'loops += 1' has no type (or is ambiguous)
-    loops = 0
-    test 2:
-      loops += 1
-    echo "test no extra complete, loops=", loops
-
-
-
-
-# bug #2229
-type
-  Type1 = object
-    id: int
-  Type2 = object
-    id: int
-
-proc init(self: var Type1, a: int, b: ref Type2) =
-  echo "1"
-
-proc init(self: var Type2, a: int) =
-  echo """
-    Works when this proc commented out
-    Otherwise error:
-    test.nim(14, 4) Error: ambiguous call; both test.init(self: var Type1, a: int, b: ref Type2) and test.init(self: var Type1, a: int, b: ref Type2) match for: (Type1, int literal(1), ref Type2)
-  """
-
-var aa: Type1
-init(aa, 1, (
-    var bb = new(Type2);
-    bb
-))
-
-
-
-# bug #4545
-type
-  SomeObject = object
-    a: int
-  AbstractObject = object
-    objet: ptr SomeObject
-
-proc convert(this: var SomeObject): AbstractObject =
-  AbstractObject(objet: this.addr)
-
-proc varargProc(args: varargs[AbstractObject, convert]): int =
-  for arg in args:
-    result += arg.objet.a
-
-var obj = SomeObject(a: 17)
-discard varargProc(obj)