StringStream & more stdlib modules support for JS/NimScript (#14095)

* StringStream & more stdlib modules support for JS/NimScript

* change back pegs test in line with #14134

tests/stdlib/thtmlparser.nim

@@ -1,6 +1,6 @@
 discard """
+  targets: "c js"
   output: '''
-@[]
 true
 https://example.com/test?format=jpg&name=orig##
 https://example.com/test?format=jpg&name=orig##text
@@ -40,7 +40,7 @@ block t2813:
     """
   var errors: seq[string] = @[]
   let tree = parseHtml(newStringStream(html), "test.html", errors)
-  echo errors # Errors: </thead> expected,...
+  doAssert errors.len == 0 # Errors: </thead> expected,...
 
   var len = tree.findAll("tr").len # len = 6
   var rows: seq[XmlNode] = @[]

tests/stdlib/tparscfg.nim

@@ -1,29 +1,5 @@
 discard """
-output: '''
-utf-8
-on
-hello
-lihf8515
-10214028
-lihaifeng@wxm.com
-===
-charset=utf-8
-[Package]
-name=hello
---threads:on
-[Author]
-name=lhf
-qq=10214028
-email="lihaifeng@wxm.com"
-===
-charset=utf-8
-[Package]
-name=hello
---threads:on
-[Author]
-name=lihf8515
-qq=10214028
-'''
+  targets: "c js"
 """
 import parsecfg, streams
 
@@ -46,24 +22,35 @@ var pname = dict2.getSectionValue("Package","name")
 var name = dict2.getSectionValue("Author","name")
 var qq = dict2.getSectionValue("Author","qq")
 var email = dict2.getSectionValue("Author","email")
-echo charset
-echo threads
-echo pname
-echo name
-echo qq
-echo email
-
-echo "==="
+doAssert charset == "utf-8"
+doAssert threads == "on"
+doAssert pname == "hello"
+doAssert name == "lihf8515"
+doAssert qq == "10214028"
+doAssert email == "lihaifeng@wxm.com"
 
 ## Modifying a configuration file.
 var dict3 = loadConfig(newStringStream(ss.data))
 dict3.setSectionKey("Author","name","lhf")
-write(stdout, $dict3)
-
-echo "==="
+doAssert $dict3 == """charset=utf-8
+[Package]
+name=hello
+--threads:on
+[Author]
+name=lhf
+qq=10214028
+email="lihaifeng@wxm.com"
+"""
 
 ## Deleting a section key in a configuration file.
 var dict4 = loadConfig(newStringStream(ss.data))
 dict4.delSectionKey("Author","email")
-write(stdout, $dict4)
+doAssert $dict4 == """charset=utf-8
+[Package]
+name=hello
+--threads:on
+[Author]
+name=lihf8515
+qq=10214028
+"""
 

tests/stdlib/tparsesql.nim

@@ -1,3 +1,6 @@
+discard """
+  targets: "c js"
+"""
 import parsesql
 
 doAssert $parseSQL("SELECT foo FROM table;") == "select foo from table;"

tests/stdlib/tpegs.nim

@@ -1,4 +1,5 @@
 discard """
+  targets: "c js"
   output: '''
 PEG AST traversal output
 ------------------------

tests/stdlib/tstdlib_various.nim

@@ -38,8 +38,8 @@ true
 """
 
 import
-  critbits, sets, strutils, tables, random, algorithm, re, ropes, segfaults,
-  lists, parsesql, streams, os, htmlgen, xmltree, strtabs
+  critbits, cstrutils, sets, strutils, tables, random, algorithm, re, ropes,
+  segfaults, lists, parsesql, streams, os, htmlgen, xmltree, strtabs
 
 
 block tcritbits:
@@ -245,3 +245,24 @@ block txmltree:
     ])
   ])
   doAssert(y.innerText == "foobar")
+
+
+block tcstrutils:
+  let s = cstring "abcdef"
+  doAssert s.startsWith("a")
+  doAssert not s.startsWith("b")
+  doAssert s.endsWith("f")
+  doAssert not s.endsWith("a")
+
+  let a = cstring "abracadabra"
+  doAssert a.startsWith("abra")
+  doAssert not a.startsWith("bra")
+  doAssert a.endsWith("abra")
+  doAssert not a.endsWith("dab")
+
+  doAssert cmpIgnoreCase(cstring "FooBar", "foobar") == 0
+  doAssert cmpIgnoreCase(cstring "bar", "Foo") < 0
+  doAssert cmpIgnoreCase(cstring "Foo5", "foo4") > 0
+
+  doAssert cmpIgnoreStyle(cstring "foo_bar", "FooBar") == 0
+  doAssert cmpIgnoreStyle(cstring "foo_bar_5", "FooBar4") > 0