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This commit is contained in:
Adam Mohammed
2023-03-21 12:52:31 -04:00
parent 818436f4b4
commit 99308a541d
6 changed files with 67 additions and 67 deletions
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18
koans/about_regular_expressions.rb
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@@ -3,32 +3,32 @@ require File.expand_path(File.dirname(__FILE__) + '/neo')
class AboutRegularExpressions < Neo::Koan
def test_a_pattern_is_a_regular_expression
assert_equal __, /pattern/.class
assert_equal Regexp, /pattern/.class
end
def test_a_regexp_can_search_a_string_for_matching_content
assert_equal __, "some matching content"[/match/]
assert_equal 'match', "some matching content"[/match/]
end
def test_a_failed_match_returns_nil
assert_equal __, "some matching content"[/missing/]
assert_equal nil, "some matching content"[/missing/]
end
# ------------------------------------------------------------------
def test_question_mark_means_optional
assert_equal __, "abbcccddddeeeee"[/ab?/]
assert_equal __, "abbcccddddeeeee"[/az?/]
assert_equal 'ab', "abbcccddddeeeee"[/ab?/]
assert_equal 'a', "abbcccddddeeeee"[/az?/]
end
def test_plus_means_one_or_more
assert_equal __, "abbcccddddeeeee"[/bc+/]
assert_equal 'bccc', "abbcccddddeeeee"[/bc+/]
end
def test_asterisk_means_zero_or_more
assert_equal __, "abbcccddddeeeee"[/ab*/]
assert_equal __, "abbcccddddeeeee"[/az*/]
assert_equal __, "abbcccddddeeeee"[/z*/]
assert_equal 'abb', "abbcccddddeeeee"[/ab*/]
assert_equal 'a', "abbcccddddeeeee"[/az*/]
assert_equal '', "abbcccddddeeeee"[/z*/]
# THINK ABOUT IT:
#