sgf-parsing uses test_helpers library (#148)

Also, set the TableFormatLevel to 5 so failed tests show complete expected value

Author: glennj

exercises/practice/sgf-parsing/.meta/spec_generator.moon

@@ -1,49 +1,12 @@
-json = require 'dkjson'
-json_string = (s) -> json.encode s
-
-is_sequence = (t) ->
-  return false if type(t) != 'table'
-  size = 0
-  size += 1 for k, _ in pairs t when k != 'n'
-  size == #t
-
-is_empty = (t) -> not next t
-
--- mostly taken from:
--- https://github.com/leafo/moonscript/blob/7b7899741c6c1e971e436d36c9aabb56f51dc3d5/moonscript/util.moon#L58
-to_string = (what, level = 0) ->
-  seen = {}
-  _dump = (what, depth = 0) ->
-    t = type what
-    if t == 'string' then
-      json_string what
-    elseif t != 'table' then
-      tostring what
-    else
-      if seen[what] then
-        return "<cycle:#{tostring what}>"
-      seen[what] = true
-      if is_sequence what then
-        return "{" .. table.concat([to_string(v, level + depth + 1) for v in *what], ", ") .. "}"
-
-      depth += 1
-      lines = for k,v in pairs what do
-        key = if type(k) == 'number' then "[#{k}]" else k
-        (' ')\rep(depth * 2) .. "#{key}: " .. _dump(v, depth)
-      seen[what] = false
-      val = if not is_empty lines
-        table.concat [indent(line, level) .. "\n" for line in *lines]
-      else
-        ""
-      class_name = if type(what.__class) == 'table' and type(what.__class.__name) == 'string'
-        "<#{what.__class.__name}>"
-      "#{class_name or ""}{\n#{val}#{indent '}', level + depth - 1}"
-  _dump what
-
+import json_string, table_dump from require 'test_helpers'
 
 {
   module_name: 'SGFParser',
 
+  test_helpers: [[
+  assert\set_parameter "TableFormatLevel", 5
+]],
+
   generate_test: (case, level) ->
     lines = if case.expected.error
       {
@@ -53,7 +16,7 @@ to_string = (what, level = 0) ->
     else
       {
         "result = SGFParser.#{case.property} #{json_string case.input.encoded}",
-        "expected = #{to_string case.expected, level}",
+        "expected = #{table_dump case.expected, level}",
         "assert.are.same expected, result"
       }
     table.concat [indent line, level for line in *lines], '\n'

exercises/practice/sgf-parsing/sgf_parsing_spec.moon

@@ -1,6 +1,8 @@
 SGFParser = require 'sgf_parsing'
 
 describe 'sgf-parsing', ->
+  assert\set_parameter "TableFormatLevel", 5
+
   it 'empty input', ->
     f = -> SGFParser.parse ""
     assert.has_error f, 'tree missing'