fix #16693: testament spec nimout too lax (#16698)

Co-authored-by: Timothee Cour <timothee.cour2@gmail.com>

testament/lib/stdtest/testutils.nim

@@ -1,5 +1,4 @@
 import std/private/miscdollars
-import std/strutils
 from std/os import getEnv
 
 template flakyAssert*(cond: untyped, msg = "", notifySuccess = true) =
@@ -26,15 +25,29 @@ template flakyAssert*(cond: untyped, msg = "", notifySuccess = true) =
     msg2.add $expr & " " & msg
     echo msg2
 
-proc greedyOrderedSubsetLines*(lhs, rhs: string): bool =
-  ## returns true if each stripped line in `lhs` appears in rhs, using a greedy matching.
-  let rhs = rhs.strip
-  var currentPos = 0
-  for line in lhs.strip.splitLines:
-    currentPos = rhs.find(line.strip, currentPos)
-    if currentPos < 0:
-      return false
-  return true
+when not defined(js):
+  import std/strutils
+
+  proc greedyOrderedSubsetLines*(lhs, rhs: string): bool =
+    ## Returns true if each stripped line in `lhs` appears in rhs, using a greedy matching.
+    iterator splitLinesClosure(): string {.closure.} =
+      for line in splitLines(rhs.strip):
+        yield line
+
+    var rhsIter = splitLinesClosure
+    var currentLine = strip(rhsIter())
+
+    for line in lhs.strip.splitLines:
+      let line = line.strip
+      if line.len != 0:
+        while line != currentLine:
+          currentLine = strip(rhsIter())
+          if rhsIter.finished:
+            return false
+
+      if rhsIter.finished:
+        return false
+    return true
 
 template enableRemoteNetworking*: bool =
   ## Allows contolling whether to run some test at a statement-level granularity.

testament/tests/shouldfail/tccodecheck.nim

@@ -1,5 +1,6 @@
 discard """
-ccodecheck: "baz"
+  targets: "c"
+  ccodecheck: "baz"
 """
 
 proc foo(): void {.exportc: "bar".}=

testament/tests/shouldfail/tcolumn.nim

@@ -1,7 +1,8 @@
 discard """
-errormsg: "undeclared identifier: 'undeclared'"
-line: 8
-column: 7
+  errormsg: "undeclared identifier: 'undeclared'"
+  targets: "c"
+  line: 9
+  column: 7
 """
 
 # test should fail because the line directive is wrong

testament/tests/shouldfail/terrormsg.nim

@@ -1,7 +1,8 @@
 discard """
-errormsg: "wrong error message"
-line: 8
-column: 6
+  errormsg: "wrong error message"
+  targets: "c"
+  line: 9
+  column: 6
 """
 
 # test should fail because the line directive is wrong

testament/tests/shouldfail/texitcode1.nim

@@ -1,3 +1,4 @@
 discard """
-exitcode: 1
+  targets: "c"
+  exitcode: 1
 """

testament/tests/shouldfail/tfile.nim

@@ -1,6 +1,7 @@
 discard """
-errormsg: "undeclared identifier: 'undefined'"
-file: "notthisfile.nim"
+  targets: "c"
+  errormsg: "undeclared identifier: 'undefined'"
+  file: "notthisfile.nim"
 """
 
 echo undefined

testament/tests/shouldfail/tline.nim

@@ -1,7 +1,8 @@
 discard """
-errormsg: "undeclared identifier: 'undeclared'"
-line: 9
-column: 6
+  targets: "c"
+  errormsg: "undeclared identifier: 'undeclared'"
+  line: 10
+  column: 6
 """
 
 # test should fail because the line directive is wrong

testament/tests/shouldfail/tmaxcodesize.nim

@@ -1,5 +1,6 @@
 discard """
-maxcodesize: 1
+  targets: "c"
+  maxcodesize: 1
 """
 
 echo "Hello World"

testament/tests/shouldfail/tnimout.nim

@@ -1,6 +1,7 @@
 discard """
-nimout: "Hello World!"
-action: compile
+  targets: "c"
+  nimout: "Hello World!"
+  action: compile
 """
 
 static:

testament/tests/shouldfail/toutput.nim

@@ -1,7 +1,8 @@
 discard """
-output: '''
-done
-'''
+  targets: "c"
+  output: '''
+  done
+  '''
 """
 
 echo "broken"

testament/tests/shouldfail/toutputsub.nim

@@ -1,5 +1,6 @@
 discard """
-outputsub: "something else"
+  outputsub: "something else"
+  targets: "c"
 """
 
 echo "Hello World!"

testament/tests/shouldfail/treject.nim

@@ -1,5 +1,6 @@
 discard """
-action: "reject"
+  action: "reject"
+  targets: "c"
 """
 
 # Because we set action="reject", we expect this line not to compile. But the

testament/tests/shouldfail/tsortoutput.nim

@@ -1,9 +1,10 @@
 discard """
-sortoutput: true
-output: '''
-2
-1
-'''
+  sortoutput: true
+  targets: "c"
+  output: '''
+  2
+  1
+  '''
 """
 
 # this test should ensure that the output is actually sorted

testament/tests/shouldfail/ttimeout.nim

@@ -1,5 +1,6 @@
 discard """
   timeout: "0.1"
+  targets: "c"
 """
 
 import os

testament/tests/shouldfail/tvalgrind.nim

@@ -1,6 +1,7 @@
 discard """
-valgrind: true
-cmd: "nim $target --gc:arc -d:useMalloc $options $file"
+  valgrind: true
+  targets: "c"
+  cmd: "nim $target --gc:arc -d:useMalloc $options $file"
 """
 
 # this is the same check used by testament/specs.nim whether or not valgrind