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1 parent f19f043 commit d10614ca812e71e2af67f63e0acc6506e0e5c935 Danish Khan committed Mar 7, 2011
Showing with 25 additions and 25 deletions.
  1. +25 −25 koans/about_strings.rb
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@@ -68,31 +68,31 @@ def test_plus_equals_will_concatenate_to_the_end_of_a_string
hi = "Hello, "
there = "World"
hi += there
- assert_equal __, hi
+ assert_equal "Hello, World", hi
end
def test_plus_equals_also_will_leave_the_original_string_unmodified
original_string = "Hello, "
hi = original_string
there = "World"
hi += there
- assert_equal __, original_string
+ assert_equal "Hello, ", original_string
end
def test_the_shovel_operator_will_also_append_content_to_a_string
hi = "Hello, "
there = "World"
hi << there
- assert_equal __, hi
- assert_equal __, there
+ assert_equal "Hello, World", hi
+ assert_equal "World", there
end
def test_the_shovel_operator_modifies_the_original_string
original_string = "Hello, "
hi = original_string
there = "World"
hi << there
- assert_equal __, original_string
+ assert_equal "Hello, World", original_string
# THINK ABOUT IT:
#
@@ -102,76 +102,76 @@ def test_the_shovel_operator_modifies_the_original_string
def test_double_quoted_string_interpret_escape_characters
string = "\n"
- assert_equal __, string.size
+ assert_equal 1, string.size
end
def test_single_quoted_string_do_not_interpret_escape_characters
string = '\n'
- assert_equal __, string.size
+ assert_equal 2, string.size
end
def test_single_quotes_sometimes_interpret_escape_characters
string = '\\\''
- assert_equal __, string.size
- assert_equal __, string
+ assert_equal 2, string.size
+ assert_equal "\\'", string
end
def test_double_quoted_strings_interpolate_variables
value = 123
string = "The value is #{value}"
- assert_equal __, string
+ assert_equal "The value is 123", string
end
def test_single_quoted_strings_do_not_interpolate
value = 123
string = 'The value is #{value}'
- assert_equal __, string
+ assert_equal "The value is \#{value}", string
end
def test_any_ruby_expression_may_be_interpolated
string = "The square root of 5 is #{Math.sqrt(5)}"
- assert_equal __, string
+ assert_equal "The square root of 5 is 2.23606797749979", string
end
def test_you_can_get_a_substring_from_a_string
string = "Bacon, lettuce and tomato"
- assert_equal __, string[7,3]
- assert_equal __, string[7..9]
+ assert_equal "let", string[7,3]
+ assert_equal "let", string[7..9]
end
def test_you_can_get_a_single_character_from_a_string
string = "Bacon, lettuce and tomato"
- assert_equal __, string[1]
+ assert_equal "a", string[1]
# Surprised?
end
in_ruby_version("1.8") do
def test_in_ruby_1_8_single_characters_are_represented_by_integers
- assert_equal __, ?a
- assert_equal __, ?a == 97
+ assert_equal 97, ?a
+ assert_equal true, ?a == 97
- assert_equal __, ?b == (?a + 1)
+ assert_equal true, ?b == (?a + 1)
end
end
in_ruby_version("1.9") do
def test_in_ruby_1_9_single_characters_are_represented_by_strings
- assert_equal __, ?a
- assert_equal __, ?a == 97
+ assert_equal "a", ?a
+ assert_equal false, ?a == 97
end
end
def test_strings_can_be_split
string = "Sausage Egg Cheese"
words = string.split
- assert_equal [__, __, __], words
+ assert_equal ["Sausage", "Egg", "Cheese"], words
end
def test_strings_can_be_split_with_different_patterns
string = "the:rain:in:spain"
words = string.split(/:/)
- assert_equal [__, __, __, __], words
+ assert_equal ["the", "rain", "in", "spain"], words
# NOTE: Patterns are formed from Regular Expressions. Ruby has a
# very powerful Regular Expression library. We will become
@@ -180,14 +180,14 @@ def test_strings_can_be_split_with_different_patterns
def test_strings_can_be_joined
words = ["Now", "is", "the", "time"]
- assert_equal __, words.join(" ")
+ assert_equal "Now is the time", words.join(" ")
end
def test_strings_are_unique_objects
a = "a string"
b = "a string"
- assert_equal __, a == b
- assert_equal __, a.object_id == b.object_id
+ assert_equal true, a == b
+ assert_equal false, a.object_id == b.object_id
end
end

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