add content parser tests

lib/utils/parser.rb

@@ -5,25 +5,11 @@
 module ContentParser
   # parse etc/passwd file
   def parse_passwd(content)
-    content.split("\n").map do |line|
+    content.to_s.split("\n").map do |line|
       parse_passwd_line(line)
     end
   end
 
-  # parse a etc/passwd line
-  def parse_passwd_line(line)
-    x = line.split(':')
-    {
-      'name' => x.at(0),
-      'password' => x.at(1),
-      'uid' => x.at(2),
-      'gid' => x.at(3),
-      'desc' => x.at(4),
-      'home' => x.at(5),
-      'shell' => x.at(6),
-    }
-  end
-
   def parse_comment_line(raw, opts)
     idx_nl = raw.index("\n")
     idx_comment = raw.index(opts[:comment_char])
@@ -46,4 +32,20 @@ module ContentParser
     end
     [line, idx_nl]
   end
+
+  private
+
+  # parse a etc/passwd line
+  def parse_passwd_line(line)
+    x = line.split(':')
+    {
+      'name' => x.at(0),
+      'password' => x.at(1),
+      'uid' => x.at(2),
+      'gid' => x.at(3),
+      'desc' => x.at(4),
+      'home' => x.at(5),
+      'shell' => x.at(6),
+    }
+  end
 end

test/unit/utils/content_parser_test.rb

@@ -0,0 +1,30 @@
+# encoding: utf-8
+# author: Dominik Richter
+# author: Christoph Hartmann
+
+describe ContentParser do
+  let (:parser) { Class.new() { include ContentParser }.new }
+
+  describe '#parse_passwd' do
+    it 'parses nil content' do
+      parser.parse_passwd(nil).must_equal([])
+    end
+
+    it 'parses an empty passwd line' do
+      parser.parse_passwd('').must_equal([])
+    end
+
+    it 'parses a valid passwd line' do
+      info = [{
+        "name"=>"root",
+        "password"=>"x",
+        "uid"=>"0",
+        "gid"=>"0",
+        "desc"=>"root",
+        "home"=>"/root",
+        "shell"=>"/bin/sh"
+      }]
+      parser.parse_passwd('root:x:0:0:root:/root:/bin/sh').must_equal(info)
+    end
+  end
+end