Added lunitx dependency and failing test for issue #17

tst/init.lua

@@ -0,0 +1,30 @@
+require("luarocks.loader")
+-- Omit next line in actual module clients; it's only to support development of the module itself
+package.path = "../src/?.lua;" .. package.path
+
+local lunitx = require("lunitx")
+module("html", lunitx.testcase, package.seeall)
+
+local htmlparser = require("htmlparser")
+
+function test_children()
+	local tree, sel
+	tree = htmlparser.parse([[
+		<parent>1
+			<child>1.1</child>
+			<child>1.2
+				<child>1.2.1</child>
+			</child>
+		</parent>
+		<parent>2
+			<child>2.1</child>
+			<child>2.2
+				<child>2.2.1</child>
+			</child>
+		</parent>
+	]])
+	sel = tree("parent child")
+	assert_equal(6, sel:len(), 'parent child')
+	sel = tree("parent > child")
+	assert_equal(4, sel:len(), 'parent > child')
+end