clean up deprecated stuff and unused imports in tests (#13059)

lib/pure/random.nim

@@ -670,7 +670,7 @@ when isMainModule:
     doAssert a[1] == 0
 
     doAssert rand(0) == 0
-    doAssert rand("a") == 'a'
+    doAssert sample("a") == 'a'
 
     when compileOption("rangeChecks"):
       try:

tests/js/tclosures.nim

@@ -2,7 +2,7 @@ discard """
   action: run
 """
 
-import math, random, strutils
+import random, strutils
 const consolePrefix = "jsCallbacks"
 
 asm """
@@ -33,8 +33,8 @@ proc runCallbacks ():cstring {.importc.}
 proc `*` (s:string, n:Natural) : string = s.repeat(n)
 
 proc outer (i:Natural) : (string, int) =
-    let c = $char(random(93) + 33)
+    let c = $char(rand(93) + 33)
-    let n = random(40)
+    let n = rand(40)
     let s = c * n
     proc inner(): cstring = ("[$1]" % $n) & s & " <--"
     regCallback(inner)

tests/js/test1.nim

@@ -4,8 +4,7 @@ discard """
 
 # This file tests the JavaScript generator
 
-import
+import strutils
-  dom, strutils
 
 var
   inputElement = "1123"
@@ -51,4 +50,3 @@ block:
   var s: seq[int]
   s.add(2)
   doAssert(s == @[2])
-

tests/js/tjsffi_old.nim

@@ -35,7 +35,7 @@ true
 ## same as tjsffi, but this test uses the old names: importc and
 ## importcpp. This test is for backwards compatibility.
 
-import macros, jsffi, jsconsole
+import jsffi, jsconsole
 
 # Tests for JsObject
 # Test JsObject []= and []
@@ -299,7 +299,6 @@ block:
 
   test()
 
-import macros
 
 block:
   {.emit:

tests/method/mmultim3.nim

@@ -1,5 +1,5 @@
 type
-    TObj* = object {.inheritable.}
+    TObj* {.inheritable.} = object
 
 var myObj* : ref TObj
 

tests/method/tmultimjs.nim

@@ -9,7 +9,7 @@ hello
 
 # tmultim1
 type
-  Expression = ref object {.inheritable.}
+  Expression {.inheritable.} = ref object
   Literal = ref object of Expression
     x: int
   PlusExpr = ref object of Expression

tests/openarray/t6163.nim

@@ -5,7 +5,7 @@ discard """
 '''
 """
 
-from future import `->`, `=>`
+from sugar import `->`, `=>`
 from math import `^`, sum
 from sequtils import filter, map, toSeq
 

tests/stdlib/tfrexp1.nim

@@ -4,10 +4,12 @@ discard """
 """
 
 import math
-import strformat
 
 const manualTest = false
 
+when manualTest:
+  import strformat
+
 proc frexp_test(lo, hi, step: float64) =
   var exp: int
   var frac: float64