139 lines
2.7 KiB
Ruby
139 lines
2.7 KiB
Ruby
require 'test/test_helper'
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class OrderedHashTest < Test::Unit::TestCase
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def setup
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@oh = OrderedHash.new
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@oh['c'] = 1
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@oh['a'] = 2
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@oh['z'] = 3
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@ordered_keys = %w(c a z)
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end
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def test_initialize
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a = OrderedHash.new
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a['x'] = 1
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a['y'] = 2
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b = OrderedHash['x' => 1, 'y' => 2]
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assert_equal a, b
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end
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def test_empty
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assert_equal [], OrderedHash.new.keys
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end
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def test_equality
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a = OrderedHash.new
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a['x'] = 1
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a['y'] = 2
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b = OrderedHash.new
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b['y'] = 2
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b['x'] = 1
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c = OrderedHash.new
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c['x'] = 1
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c['y'] = 2
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d = OrderedHash.new
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d['x'] = 2
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d['y'] = 3
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e = OrderedHash.new
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e['z'] = 1
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e['y'] = 2
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assert_equal a, c
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assert_not_equal a, b
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assert_not_equal a, d
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assert_not_equal a, e
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end
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def test_order_preserved
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assert_equal @ordered_keys, @oh.keys
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end
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def test_order_preserved_after_replace
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@oh['a'] = 42
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assert_equal @ordered_keys, @oh.keys
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@oh['c'] = 'foobar'
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assert_equal @ordered_keys, @oh.keys
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@oh['z'] = /huh?/
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assert_equal @ordered_keys, @oh.keys
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end
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def test_each
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keys = []
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@oh.each { |k, v| keys << k }
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assert_equal keys, @oh.keys
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@oh['z'] = 42
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assert_equal keys, @oh.keys
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assert_equal @oh, @oh.each {|k,v|}
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end
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def test_values
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assert_equal [1, 2, 3], @oh.values
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end
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def test_merge
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other = OrderedHash.new
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other['f'] = 'foo'
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noob = @oh.merge(other)
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assert_equal @ordered_keys + ['f'], noob.keys
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assert_equal [1, 2, 3, 'foo'], noob.values
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end
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def test_merge_bang
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other = OrderedHash.new
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other['f'] = 'foo'
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@oh.merge!(other)
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assert_equal @ordered_keys + ['f'], @oh.keys
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assert_equal [1, 2, 3, 'foo'], @oh.values
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end
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def test_merge_bang_with_overlap
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other = OrderedHash.new
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other['a'] = 'apple'
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other['c'] = 'crab'
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other['f'] = 'foo'
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@oh.merge!(other)
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assert_equal @ordered_keys + ['f'], @oh.keys
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assert_equal ['crab', 'apple', 3, 'foo'], @oh.values
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end
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def test_merge_bang_with_hash_with_overlap
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other = Hash.new
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other['a'] = 'apple'
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other['c'] = 'crab'
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other['f'] = 'foo'
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@oh.merge!(other)
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assert_equal @ordered_keys + ['f'], @oh.keys
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assert_equal ['crab', 'apple', 3, 'foo'], @oh.values
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end
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def test_inspect_retains_order
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assert_equal '{"c"=>1, "a"=>2, "z"=>3}', @oh.inspect
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end
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def test_clear
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@oh.clear
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assert @oh.keys.empty?
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end
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def test_delete
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assert @oh.keys.include?('z')
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@oh.delete('z')
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assert !@oh.keys.include?('z')
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end
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def test_delete_if
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assert @oh.keys.include?('z')
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@oh.delete_if { |k,v| k == 'z' }
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assert !@oh.keys.include?('z')
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end
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end
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