add parser tests

Author: sumneko

test/parser/ast/block.lua

@@ -0,0 +1,24 @@
+local class = require 'class'
+
+local function TEST(code)
+    return function (expect)
+        ---@class LuaParser.Ast
+        local ast = class.new 'LuaParser.Ast' (code)
+        local node = ast:parseBoolean()
+        assert(node)
+        Match(node, expect)
+    end
+end
+
+TEST [[true]]
+{
+    left    = 0,
+    finish  = 4,
+    value   = true,
+}
+TEST [[false]]
+{
+    left    = 0,
+    right   = 5,
+    value   = false,
+}