testament: remove deadcode related to realtimeGC, testC, callCCompiler (#18087)

Author: timotheecour

testament/categories.nim

@@ -28,7 +28,6 @@ const
     "js",
     "ic",
     "lib",
-    "longgc",
     "manyloc",
     "nimble-packages",
     "niminaction",
@@ -39,7 +38,6 @@ const
     "coroutines",
     "osproc",
     "shouldfail",
-    "dir with space",
     "destructor"
   ]
 
@@ -156,19 +154,6 @@ proc gcTests(r: var TResults, cat: Category, options: string) =
   test "cyclecollector"
   testWithoutBoehm "trace_globals"
 
-proc longGCTests(r: var TResults, cat: Category, options: string) =
-  when defined(windows):
-    let cOptions = "-ldl -DWIN"
-  else:
-    let cOptions = "-ldl"
-
-  var c = initResults()
-  # According to ioTests, this should compile the file
-  testSpec c, makeTest("tests/realtimeGC/shared", options, cat)
-  #        ^- why is this not appended to r? Should this be discarded?
-  testC r, makeTest("tests/realtimeGC/cmain", cOptions, cat), actionRun
-  testSpec r, makeTest("tests/realtimeGC/nmain", options & "--threads: on", cat)
-
 # ------------------------- threading tests -----------------------------------
 
 proc threadTests(r: var TResults, cat: Category, options: string) =
@@ -186,6 +171,11 @@ proc ioTests(r: var TResults, cat: Category, options: string) =
   # dummy compile result:
   var c = initResults()
   testSpec c, makeTest("tests/system/helpers/readall_echo", options, cat)
+  #        ^- why is this not appended to r? Should this be discarded?
+  # EDIT: this should be replaced by something like in D20210524T180826,
+  # likewise in similar instances where `testSpec c` is used, or more generally
+  # when a test depends on another test, as it makes tests non-independent,
+  # creating complications for batching and megatest logic.
   testSpec r, makeTest("tests/system/tio", options, cat)
 
 # ------------------------- async tests ---------------------------------------
@@ -687,8 +677,6 @@ proc processCategory(r: var TResults, cat: Category,
       dllTests(r, cat, options)
     of "gc":
       gcTests(r, cat, options)
-    of "longgc":
-      longGCTests(r, cat, options)
     of "debugger":
       debuggerTests(r, cat, options)
     of "manyloc":

testament/testament.nim

@@ -221,53 +221,6 @@ proc callNimCompiler(cmdTemplate, filename, options, nimcache: string,
     result.msg = matches[0]
   trimUnitSep result.msg
 
-proc callCCompiler(cmdTemplate, filename, options: string,
-                  target: TTarget): TSpec =
-  let cmd = prepareTestCmd(cmdTemplate, filename, options, nimcache = "", target)
-  doAssert false
-  #[
-  this code hasn't been run in a while, and should be removed which simplifies code
-  there are better ways to do this anyways (e.g. running c code from a nim file)
-  
-  the only place where this is called is:
-  `testC r, makeTest("tests/realtimeGC/cmain", cOptions, cat), actionRun`
-  which isn't run unless you call:
-  XDG_CONFIG_HOME= nim r --lib:lib --stacktrace:on testament/testament.nim r longgc
-
-  and this fails since at least nim 1.0 with:
-  testament/testament.nim(851) testament
-  testament/testament.nim(822) main
-  testament/categories.nim(713) processCategory
-  testament/categories.nim(189) longGCTests
-  testament/testament.nim(644) makeTest
-  testament/specs.nim(251) parseSpec
-  testament/specs.nim(184) extractSpec
-  lib/system/io.nim(861) readFile
-  Error: unhandled exception: cannot open: tests/realtimeGC/cmain.nim [IOError]
-
-  Also, `c[5 .. ^1]` is too magical.
-  ]#
-  let c = cmd.parseCmdLine
-  var p = startProcess(command = "gcc", args = c[5 .. ^1],
-                       options = {poStdErrToStdOut, poUsePath, poEvalCommand})
-  let outp = p.outputStream
-  var x = newStringOfCap(120)
-  result.nimout = ""
-  result.msg = ""
-  result.file = ""
-  result.output = ""
-  result.line = -1
-  while true:
-    if outp.readLine(x):
-      result.nimout.add(x & '\n')
-    elif not running(p):
-      break
-  close(p)
-  if p.peekExitCode == 0:
-    result.err = reSuccess
-  else:
-    result.err = reNimcCrash
-
 proc initResults: TResults =
   result.total = 0
   result.passed = 0
@@ -628,22 +581,6 @@ proc testSpecWithNimcache(r: var TResults, test: TTest; nimcache: string) {.used
     var testClone = test
     testSpecHelper(r, testClone, test.spec, target, nimcache)
 
-proc testC(r: var TResults, test: TTest, action: TTestAction) =
-  # runs C code. Doesn't support any specs, just goes by exit code.
-  if not checkDisabled(r, test): return
-
-  let tname = test.name.addFileExt(".c")
-  inc(r.total)
-  maybeStyledEcho "Processing ", fgCyan, extractFilename(tname)
-  var given = callCCompiler(getCmd(TSpec()), test.name & ".c", test.options, targetC)
-  if given.err != reSuccess:
-    r.addResult(test, targetC, "", given.msg, given.err)
-  elif action == actionRun:
-    let exeFile = changeFileExt(test.name, ExeExt)
-    var (_, exitCode) = execCmdEx(exeFile, options = {poStdErrToStdOut, poUsePath})
-    if exitCode != 0: given.err = reExitcodesDiffer
-  if given.err == reSuccess: inc(r.passed)
-
 proc makeTest(test, options: string, cat: Category): TTest =
   result.cat = cat
   result.name = test

tests/readme.md

@@ -55,5 +55,4 @@ testing, which is slower).
 The folder ``dll`` contains simple DLL tests.
 
 The folder ``realtimeGC`` contains a test for validating that the realtime GC
-can run properly without linking against the nimrtl.dll/so. It includes a C
-client and platform specific build files for manual compilation.
+can run properly without linking against the nimrtl.dll/so.

tests/realtimeGC/cmain.c

@@ -9,16 +9,24 @@ these dont' seem needed --debuginfo
 nor these from the previous main.nim.cfg: --app:console
 ]#
 
+#[
+Test the realtime GC without linking nimrtl.dll/so.
+
+To build by hand and run the test for 35 minutes:
+`nim r --threads:on -d:runtimeSecs:2100 tests/realtimeGC/tmain.nim`
+]#
+
 import times, os, strformat, strutils
 from stdtest/specialpaths import buildDir
 # import threadpool
 
 const runtimeSecs {.intdefine.} = 5
 
 const file = "shared.nim"
-const dllname = buildDir / (DynlibFormat % file)
+const dllname = buildDir / (DynlibFormat % "shared_D20210524T180506")
 
 static:
+  # D20210524T180826:here we compile the dependency on the fly
   let nim = getCurrentCompilerExe()
   let (output, exitCode) = gorgeEx(fmt"{nim} c -o:{dllname} --debuginfo --app:lib --threads:on -d:release -d:useRealtimeGC {file}")
   doAssert exitCode == 0, output