misc fixes: remove forceConst (obsolete by static), add more runnableExamples to system (#17896)

* misc fixes

* add runnableExamples for compileOption

* add runnableExamples for runnableExamples

* move tconsteval => tconst

* cleanup

tests/vm/tconst.nim

@@ -0,0 +1,35 @@
+discard """
+  targets: "c cpp js"
+"""
+
+import std/strutils
+
+template forceConst(a: untyped): untyped =
+  ## Force evaluation at CT, but `static(a)` is simpler
+  const ret = a
+  ret
+
+proc isNimVm(): bool =
+  when nimvm: result = true
+  else: result = false
+
+block:
+  doAssert forceConst(isNimVm())
+  doAssert not isNimVm()
+  doAssert forceConst(isNimVm()) == static(isNimVm())
+  doAssert forceConst(isNimVm()) == isNimVm().static
+
+template main() =
+  # xxx merge more const related tests here
+  block:
+    const
+      a = """
+    Version $1|
+    Compiled at: $2, $3
+    """ % [NimVersion & spaces(44-len(NimVersion)), CompileDate, CompileTime]
+    let b = $a
+    doAssert CompileTime in b
+    doAssert NimVersion in b
+
+static: main()
+main()

tests/vm/tconsteval.nim

@@ -1,31 +0,0 @@
-discard """
-action: compile
-"""
-
-import strutils
-
-const
-  HelpText = """
-+-----------------------------------------------------------------+
-|         Maintenance program for Nim                             |
-|             Version $1|
-|             (c) 2012 Andreas Rumpf                              |
-+-----------------------------------------------------------------+
-Compiled at: $2, $3
-
-Usage:
-  koch [options] command [options for command]
-Options:
-  --force, -f, -B, -b      forces rebuild
-  --help, -h               shows this help and quits
-Possible Commands:
-  boot [options]           bootstraps with given command line options
-  clean                    cleans Nim project; removes generated files
-  web                      generates the website
-  csource [options]        builds the C sources for installation
-  zip                      builds the installation ZIP package
-  inno                     builds the Inno Setup installer
-""" % [NimVersion & spaces(44-len(NimVersion)),
-       CompileDate, CompileTime]
-
-echo HelpText

tests/vm/tvmops.nim

@@ -9,16 +9,6 @@ import os
 import math
 import strutils
 
-template forceConst(a: untyped): untyped =
-  ## Force evaluation at CT, useful for example here:
-  ## `callFoo(forceConst(getBar1()), getBar2())`
-  ## instead of:
-  ##  block:
-  ##    const a = getBar1()
-  ##    `callFoo(a, getBar2())`
-  const ret = a
-  ret
-
 static:
   # TODO: add more tests
   block: #getAppFilename, gorgeEx, gorge
@@ -51,6 +41,6 @@ static:
 
 block:
   # Check against bugs like #9176
-  doAssert getCurrentCompilerExe() == forceConst(getCurrentCompilerExe())
+  doAssert getCurrentCompilerExe() == getCurrentCompilerExe().static
   if false: #pending #9176
-    doAssert gorgeEx("unexistant") == forceConst(gorgeEx("unexistant"))
+    doAssert gorgeEx("unexistant") == gorgeEx("unexistant").static