test/ruby/test_array.rb


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require 'test/unit'

class TestArray < Test::Unit::TestCase
  def setup
    @verbose = $VERBOSE
    $VERBOSE = nil
    @cls = Array
  end

  def teardown
    $VERBOSE = @verbose
  end

  def test_0_literal
    assert_equal([1, 2, 3, 4], [1, 2] + [3, 4])
    assert_equal([1, 2, 1, 2], [1, 2] * 2)
    assert_equal("1:2", [1, 2] * ":")

    assert_equal([1, 2].hash, [1, 2].hash)

    assert_equal([2,3], [1,2,3] & [2,3,4])
    assert_equal([1,2,3,4], [1,2,3] | [2,3,4])
    assert_equal([1,2,3] - [2,3], [1])

    x = [0, 1, 2, 3, 4, 5]
    assert_equal(2, x[2])
    assert_equal([1, 2, 3], x[1..3])
    assert_equal([1, 2, 3], x[1,3])

    x[0, 2] = 10
    assert(x[0] == 10 && x[1] == 2)

    x[0, 0] = -1
    assert(x[0] == -1 && x[1] == 10)

    x[-1, 1] = 20
    assert(x[-1] == 20 && x.pop == 20)
  end

  def test_array_andor_0
    assert_equal([2], ([1,2,3]&[2,4,6]))
    assert_equal([1,2,3,4,6], ([1,2,3]|[2,4,6]))
  end

  def test_compact_0
    a = [nil, 1, nil, nil, 5, nil, nil]
    assert_equal [1, 5], a.compact
    assert_equal [nil, 1, nil, nil, 5, nil, nil], a
    a.compact!
    assert_equal [1, 5], a
  end

  def test_uniq_0
    x = [1, 1, 4, 2, 5, 4, 5, 1, 2]
    x.uniq!
    assert_equal([1, 4, 2, 5], x)
  end

  def test_empty_0
    assert_equal true, [].empty?
    assert_equal false, [1].empty?
    assert_equal false, [1, 1, 4, 2, 5, 4, 5, 1, 2].empty?
  end

  def test_sort_0
    x = ["it", "came", "to", "pass", "that", "..."]
    x = x.sort.join(" ")
    assert_equal("... came it pass that to", x)
    x = [2,5,3,1,7]
    x.sort!{|a,b| a<=>b}		# sort with condition
    assert_equal([1,2,3,5,7], x)
    x.sort!{|a,b| b-a}		# reverse sort
    assert_equal([7,5,3,2,1], x)
  end

  def test_split_0
    x = "The Book of Mormon"
    assert_equal(x.reverse, x.split(//).reverse!.join)
    assert_equal(x.reverse, x.reverse!)
    assert_equal("g:n:i:r:t:s: :e:t:y:b: :1", "1 byte string".split(//).reverse.join(":"))
    x = "a b c  d"
    assert_equal(['a', 'b', 'c', 'd'], x.split)
    assert_equal(['a', 'b', 'c', 'd'], x.split(' '))
  end

  def test_misc_0
    assert(defined? "a".chomp)
    assert_equal(["a", "b", "c"], "abc".scan(/./))
    assert_equal([["1a"], ["2b"], ["3c"]], "1a2b3c".scan(/(\d.)/))
    # non-greedy match
    assert_equal([["a", "12"], ["b", "22"]], "a=12;b=22".scan(/(.*?)=(\d*);?/))

    x = [1]
    assert_equal('1:1:1:1:1', (x * 5).join(":"))
    assert_equal('1', (x * 1).join(":"))
    assert_equal('', (x * 0).join(":"))

    *x = *(1..7).to_a
    assert_equal(7, x.size)
    assert_equal([1, 2, 3, 4, 5, 6, 7], x)

    x = [1,2,3]
    x[1,0] = x
    assert_equal([1,1,2,3,2,3], x)

    x = [1,2,3]
    x[-1,0] = x
    assert_equal([1,2,1,2,3,3], x)

    x = [1,2,3]
    x.concat(x)
    assert_equal([1,2,3,1,2,3], x)

    x = [1,2,3]
    x.clear
    assert_equal([], x)

    x = [1,2,3]
    y = x.dup
    x << 4
    y << 5
    assert_equal([1,2,3,4], x)
    assert_equal([1,2,3,5], y)
  end

  def test_beg_end_0
    x = [1, 2, 3, 4, 5]
    
    assert_equal(1, x.first)
    assert_equal([1], x.first(1))
    assert_equal([1, 2, 3], x.first(3))
    
    assert_equal(5, x.last)
    assert_equal([5], x.last(1))
    assert_equal([3, 4, 5], x.last(3))
    
    assert_equal(1, x.shift)
    assert_equal([2, 3, 4], x.shift(3))
    assert_equal([5], x)
    
    assert_equal([2, 3, 4, 5], x.unshift(2, 3, 4))
    assert_equal([1, 2, 3, 4, 5], x.unshift(1))
    assert_equal([1, 2, 3, 4, 5], x)
    
    assert_equal(5, x.pop)
    assert_equal([3, 4], x.pop(2))
    assert_equal([1, 2], x)
    
    assert_equal([1, 2, 3, 4], x.push(3, 4))
    assert_equal([1, 2, 3, 4, 5], x.push(5))
    assert_equal([1, 2, 3, 4, 5], x)
  end

  def test_find_all_0
    assert_respond_to([], :find_all)
    assert_respond_to([], :select)       # Alias
    assert_equal([], [].find_all{ |obj| obj == "foo"})

    x = ["foo", "bar", "baz", "baz", 1, 2, 3, 3, 4]
    assert_equal(["baz","baz"], x.find_all{ |obj| obj == "baz" })
    assert_equal([3,3], x.find_all{ |obj| obj == 3 })
  end

  def test_fill_0
    assert_equal([-1, -1, -1, -1, -1, -1], [0, 1, 2, 3, 4, 5].fill(-1))
    assert_equal([0, 1, 2, -1, -1, -1], [0, 1, 2, 3, 4, 5].fill(-1, 3))
    assert_equal([0, 1, 2, -1, -1, 5], [0, 1, 2, 3, 4, 5].fill(-1, 3, 2))
    assert_equal([0, 1, 2, -1, -1, -1, -1, -1], [0, 1, 2, 3, 4, 5].fill(-1, 3, 5))
    assert_equal([0, 1, -1, -1, 4, 5], [0, 1, 2, 3, 4, 5].fill(-1, 2, 2))
    assert_equal([0, 1, -1, -1, -1, -1, -1], [0, 1, 2, 3, 4, 5].fill(-1, 2, 5))
    assert_equal([0, 1, 2, 3, -1, 5], [0, 1, 2, 3, 4, 5].fill(-1, -2, 1))
    assert_equal([0, 1, 2, 3, -1, -1, -1], [0, 1, 2, 3, 4, 5].fill(-1, -2, 3))
    assert_equal([0, 1, 2, -1, -1, 5], [0, 1, 2, 3, 4, 5].fill(-1, 3..4))
    assert_equal([0, 1, 2, -1, 4, 5], [0, 1, 2, 3, 4, 5].fill(-1, 3...4))
    assert_equal([0, 1, -1, -1, -1, 5], [0, 1, 2, 3, 4, 5].fill(-1, 2..-2))
    assert_equal([0, 1, -1, -1, 4, 5], [0, 1, 2, 3, 4, 5].fill(-1, 2...-2))
    assert_equal([10, 11, 12, 13, 14, 15], [0, 1, 2, 3, 4, 5].fill{|i| i+10})
    assert_equal([0, 1, 2, 13, 14, 15], [0, 1, 2, 3, 4, 5].fill(3){|i| i+10})
    assert_equal([0, 1, 2, 13, 14, 5], [0, 1, 2, 3, 4, 5].fill(3, 2){|i| i+10})
    assert_equal([0, 1, 2, 13, 14, 15, 16, 17], [0, 1, 2, 3, 4, 5].fill(3, 5){|i| i+10})
    assert_equal([0, 1, 2, 13, 14, 5], [0, 1, 2, 3, 4, 5].fill(3..4){|i| i+10})
    assert_equal([0, 1, 2, 13, 4, 5], [0, 1, 2, 3, 4, 5].fill(3...4){|i| i+10})
    assert_equal([0, 1, 12, 13, 14, 5], [0, 1, 2, 3, 4, 5].fill(2..-2){|i| i+10})
    assert_equal([0, 1, 12, 13, 4, 5], [0, 1, 2, 3, 4, 5].fill(2...-2){|i| i+10})
  end

  # From rubicon

  def test_00_new
    a = @cls.new()
    assert_instance_of(@cls, a)
    assert_equal(0, a.length)
    assert_nil(a[0])
  end

  def test_01_square_brackets
    a = @cls[ 5, 4, 3, 2, 1 ]
    assert_instance_of(@cls, a)
    assert_equal(5, a.length)
    5.times { |i| assert_equal(5-i, a[i]) }
    assert_nil(a[6])
  end

  def test_AND # '&'
    assert_equal(@cls[1, 3], @cls[ 1, 1, 3, 5 ] & @cls[ 1, 2, 3 ])
    assert_equal(@cls[],     @cls[ 1, 1, 3, 5 ] & @cls[ ])
    assert_equal(@cls[],     @cls[  ]           & @cls[ 1, 2, 3 ])
    assert_equal(@cls[],     @cls[ 1, 2, 3 ]    & @cls[ 4, 5, 6 ])
  end

  def test_MUL # '*'
    assert_equal(@cls[], @cls[]*3)
    assert_equal(@cls[1, 1, 1], @cls[1]*3)
    assert_equal(@cls[1, 2, 1, 2, 1, 2], @cls[1, 2]*3)
    assert_equal(@cls[], @cls[1, 2, 3] * 0)
    assert_raise(ArgumentError) { @cls[1, 2]*(-3) }

    assert_equal('1-2-3-4-5', @cls[1, 2, 3, 4, 5] * '-')
    assert_equal('12345',     @cls[1, 2, 3, 4, 5] * '')

  end

  def test_PLUS # '+'
    assert_equal(@cls[],     @cls[]  + @cls[])
    assert_equal(@cls[1],    @cls[1] + @cls[])
    assert_equal(@cls[1],    @cls[]  + @cls[1])
    assert_equal(@cls[1, 1], @cls[1] + @cls[1])
    assert_equal(@cls['cat', 'dog', 1, 2, 3], %w(cat dog) + (1..3).to_a)
  end

  def test_MINUS # '-'
    assert_equal(@cls[],  @cls[1] - @cls[1])
    assert_equal(@cls[1], @cls[1, 2, 3, 4, 5] - @cls[2, 3, 4, 5])
    # Ruby 1.8 feature change
    #assert_equal(@cls[1], @cls[1, 2, 1, 3, 1, 4, 1, 5] - @cls[2, 3, 4, 5])
    assert_equal(@cls[1, 1, 1, 1], @cls[1, 2, 1, 3, 1, 4, 1, 5] - @cls[2, 3, 4, 5])
    a = @cls[]
    1000.times { a << 1 }
    assert_equal(1000, a.length)
    #assert_equal(@cls[1], a - @cls[2])
    assert_equal(@cls[1] * 1000, a - @cls[2])
    #assert_equal(@cls[1],  @cls[1, 2, 1] - @cls[2])
    assert_equal(@cls[1, 1],  @cls[1, 2, 1] - @cls[2])
    assert_equal(@cls[1, 2, 3], @cls[1, 2, 3] - @cls[4, 5, 6])
  end

  def test_LSHIFT # '<<'
    a = @cls[]
    a << 1
    assert_equal(@cls[1], a)
    a << 2 << 3
    assert_equal(@cls[1, 2, 3], a)
    a << nil << 'cat'
    assert_equal(@cls[1, 2, 3, nil, 'cat'], a)
    a << a
    assert_equal(@cls[1, 2, 3, nil, 'cat', a], a)
  end

  def test_CMP # '<=>'
    assert_equal(0,  @cls[] <=> @cls[])
    assert_equal(0,  @cls[1] <=> @cls[1])
    assert_equal(0,  @cls[1, 2, 3, 'cat'] <=> @cls[1, 2, 3, 'cat'])
    assert_equal(-1, @cls[] <=> @cls[1])
    assert_equal(1,  @cls[1] <=> @cls[])
    assert_equal(-1, @cls[1, 2, 3] <=> @cls[1, 2, 3, 'cat'])
    assert_equal(1,  @cls[1, 2, 3, 'cat'] <=> @cls[1, 2, 3])
    assert_equal(-1, @cls[1, 2, 3, 'cat'] <=> @cls[1, 2, 3, 'dog'])
    assert_equal(1,  @cls[1, 2, 3, 'dog'] <=> @cls[1, 2, 3, 'cat'])
  end

  def test_EQUAL # '=='
    assert(@cls[] == @cls[])
    assert(@cls[1] == @cls[1])
    assert(@cls[1, 1, 2, 2] == @cls[1, 1, 2, 2])
    assert(@cls[1.0, 1.0, 2.0, 2.0] == @cls[1, 1, 2, 2])