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module DiffArrayTests
def test_array_append
difftest [1,2,3], [1,2,3,4]
difftest [1,2,3], [1,2,3,4,5]
end
def test_array_prepend
difftest [1,2,3], [0,1,2,3]
difftest [1,2,3], [-1,0,1,2,3]
end
def test_array_insert
difftest [1,2,3], [1,2,4,3]
difftest [1,2,3], [1,2,4,5,3]
end
def test_array_remove
difftest [1,2,3], [1,3]
end
def test_array_cutfront
difftest [1,2,3], [2,3]
difftest [1,2,3], [3]
end
def test_array_cutback
difftest [1,2,3], [1,2]
difftest [1,2,3], [1]
end
def test_array_empty
difftest [1,2,3], []
end
def test_array_fill
difftest [], [1,2,3]
end
def test_array_change
difftest [1,2,3], [1,4,3]
difftest [1,2,3], [1,4,5]
difftest [1,2,3,4], [1,5,4]
end
def test_array_noop
difftest [1,2,3], [1,2,3]
end
def test_array_grow
difftest [1,2,3], [4,1,5,2,6,3,7]
end
def test_array_shrink
difftest [1,2,3,4,5,6,7], [2,4,6]
end
end
module DiffStringTests
def test_string_append
difftest "abc", "abcd"
difftest "abc", "abcde"
end
def test_string_preprend
difftest "abc", "qabc"
difftest "abc", "qrabc"
end
def test_string_insert
difftest "abc", "abqc"
difftest "abc", "abqrc"
end
def test_string_cutfront
difftest "abc", "bc"
difftest "abc", "c"
end
def test_string_cutback
difftest "abc", "ab"
difftest "abc", "a"
end
def test_string_empty
difftest "abc", ""
end
def test_string_fill
difftest "", "abc"
end
def test_string_change
difftest "abc", "aqc"
difftest "abc", "aqrc"
difftest "abcd", "aqd"
end
def test_string_noop
difftest "abc", "abc"
end
def test_string_grow
difftest "abc", "qarbsct"
end
def test_string_shrink
difftest "abcdefg", "bdf"
end
def test_string_remove
difftest "abc", "ac"
end
end
module DiffStressTest
Elems = [1,2,3]
def generate_array
length = (16 + 16 * rand).to_i
ary = []
length.times {
ary << Elems[(rand * Elems.length).to_i]
}
return ary
end
def test_stress
256.times {
a = generate_array
b = generate_array
difftest(a, b)
}
end
end
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