Add unit tests for Changit::Lexer

test/lexer_test.rb

@@ -0,0 +1,28 @@
+require 'test_helper'
+require 'changit/lexer'
+require 'changit/lexer/section_token'
+
+class LexerTest < Minitest::Test
+  def test_tokenize
+    tokens = lexer.tokens
+
+    assert_kind_of Array, tokens
+    refute_empty tokens
+    assert_equal tokens.size, lexer.original_expression.each_line.count
+  end
+
+  def test_to_hash
+    token_hash = lexer.token_hash
+
+    assert_kind_of Hash, token_hash
+    refute_empty token_hash
+    assert_kind_of_array Changit::Lexer::SectionToken, token_hash.keys
+  end
+
+  private
+
+  def lexer
+    config = "[user]\n\tname = testname\n\temail = [email protected]\n[core]\n\teditor = vim\n[color]\n\tui = true\n[rebase]\n\tautosquash = true\n".freeze
+    Changit::Lexer.new(config)
+  end
+end

test/test_helper.rb

@@ -1,3 +1,11 @@
 $LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
 
 require 'minitest/autorun'
+
+# some unorganized helpers
+
+def assert_kind_of_array(kind, arr)
+  arr.all? do |e|
+    assert_kind_of kind, e
+  end
+end