make megatest consistent with unjoined tests wrt newlines, honor newlines in output spec (#16151)

* fix megatest newlines
* still allow missing trailing newline for now but in a more strict way than before

tests/stdlib/talgorithm.nim

@@ -1,6 +1,6 @@
 discard """
   output:'''@["3", "2", "1"]
-  '''
+'''
 """
 #12928,10456
 import sequtils, strutils, algorithm, json

tests/stdlib/tcgi.nim

@@ -1,5 +1,6 @@
 discard """
   output: '''
+
 [Suite] Test cgi module
 (key: "a", value: "1")
 (key: "b", value: "0")

tests/stdlib/tmath.nim

@@ -1,6 +1,8 @@
 discard """
   action: run
-  output: '''[Suite] random int
+  output: '''
+
+[Suite] random int
 
 [Suite] random float
 
@@ -9,7 +11,6 @@ discard """
 [Suite] random sample
 
 [Suite] ^
-
 '''
 """
 

tests/stdlib/tnet_ll.nim

@@ -1,6 +1,7 @@
 discard """
   action: run
   output: '''
+
 [Suite] inet_ntop tests
 '''
 """

tests/stdlib/tnre.nim

@@ -4,7 +4,9 @@ discard """
 # codes to differ and be reported as a failure
 
   output:
-    '''[Suite] Test NRE initialization
+    '''
+
+[Suite] Test NRE initialization
 
 [Suite] captures
 

tests/stdlib/tparseuints.nim

@@ -1,13 +1,14 @@
 discard """
   action: run
   output: '''
-[Suite] parseutils'''
+
+[Suite] parseutils
+'''
 """
 import unittest, strutils
 
 suite "parseutils":
-  test "uint":
-    check: parseBiggestUInt("0") == 0'u64
-    check: parseBiggestUInt("18446744073709551615") == 0xFFFF_FFFF_FFFF_FFFF'u64
-    expect(ValueError):
-      discard parseBiggestUInt("18446744073709551616")
+  check: parseBiggestUInt("0") == 0'u64
+  check: parseBiggestUInt("18446744073709551615") == 0xFFFF_FFFF_FFFF_FFFF'u64
+  expect(ValueError):
+    discard parseBiggestUInt("18446744073709551616")

tests/stdlib/trst.nim

@@ -1,5 +1,6 @@
 discard """
   output: '''
+
 [Suite] RST include directive
 '''
 """

tests/stdlib/tsequtils.nim

@@ -455,6 +455,3 @@ block:
         yield i
 
   doAssert: iter(3).mapIt(2*it).foldl(a + b) == 6
-
-when not defined(testing):
-  echo "Finished doc tests"

tests/stdlib/tunittest.nim

@@ -1,5 +1,7 @@
 discard """
-  output: '''[Suite] suite with only teardown
+  output: '''
+
+[Suite] suite with only teardown
 
 [Suite] suite with only setup
 
@@ -16,7 +18,6 @@ discard """
 [Suite] test suite
 
 [Suite] test name filtering
-
 '''
 """
 
@@ -141,38 +142,37 @@ suite "test suite":
 
         check(a == b)
 
-when defined(testing):
-  suite "test name filtering":
-    test "test name":
-      check matchFilter("suite1", "foo", "")
-      check matchFilter("suite1", "foo", "foo")
-      check matchFilter("suite1", "foo", "::")
-      check matchFilter("suite1", "foo", "*")
-      check matchFilter("suite1", "foo", "::foo")
-      check matchFilter("suite1", "::foo", "::foo")
+suite "test name filtering":
+  test "test name":
+    check matchFilter("suite1", "foo", "")
+    check matchFilter("suite1", "foo", "foo")
+    check matchFilter("suite1", "foo", "::")
+    check matchFilter("suite1", "foo", "*")
+    check matchFilter("suite1", "foo", "::foo")
+    check matchFilter("suite1", "::foo", "::foo")
 
-    test "test name - glob":
-      check matchFilter("suite1", "foo", "f*")
-      check matchFilter("suite1", "foo", "*oo")
-      check matchFilter("suite1", "12345", "12*345")
-      check matchFilter("suite1", "q*wefoo", "q*wefoo")
-      check false == matchFilter("suite1", "foo", "::x")
-      check false == matchFilter("suite1", "foo", "::x*")
-      check false == matchFilter("suite1", "foo", "::*x")
-      #  overlap
-      check false == matchFilter("suite1", "12345", "123*345")
-      check matchFilter("suite1", "ab*c::d*e::f", "ab*c::d*e::f")
+  test "test name - glob":
+    check matchFilter("suite1", "foo", "f*")
+    check matchFilter("suite1", "foo", "*oo")
+    check matchFilter("suite1", "12345", "12*345")
+    check matchFilter("suite1", "q*wefoo", "q*wefoo")
+    check false == matchFilter("suite1", "foo", "::x")
+    check false == matchFilter("suite1", "foo", "::x*")
+    check false == matchFilter("suite1", "foo", "::*x")
+    #  overlap
+    check false == matchFilter("suite1", "12345", "123*345")
+    check matchFilter("suite1", "ab*c::d*e::f", "ab*c::d*e::f")
 
-    test "suite name":
-      check matchFilter("suite1", "foo", "suite1::")
-      check false == matchFilter("suite1", "foo", "suite2::")
-      check matchFilter("suite1", "qwe::foo", "qwe::foo")
-      check matchFilter("suite1", "qwe::foo", "suite1::qwe::foo")
+  test "suite name":
+    check matchFilter("suite1", "foo", "suite1::")
+    check false == matchFilter("suite1", "foo", "suite2::")
+    check matchFilter("suite1", "qwe::foo", "qwe::foo")
+    check matchFilter("suite1", "qwe::foo", "suite1::qwe::foo")
 
-    test "suite name - glob":
-      check matchFilter("suite1", "foo", "::*")
-      check matchFilter("suite1", "foo", "*::*")
-      check matchFilter("suite1", "foo", "*::foo")
-      check false == matchFilter("suite1", "foo", "*ite2::")
-      check matchFilter("suite1", "q**we::foo", "q**we::foo")
-      check matchFilter("suite1", "a::b*c::d*e", "a::b*c::d*e")
+  test "suite name - glob":
+    check matchFilter("suite1", "foo", "::*")
+    check matchFilter("suite1", "foo", "*::*")
+    check matchFilter("suite1", "foo", "*::foo")
+    check false == matchFilter("suite1", "foo", "*ite2::")
+    check matchFilter("suite1", "q**we::foo", "q**we::foo")
+    check matchFilter("suite1", "a::b*c::d*e", "a::b*c::d*e")