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# tc_Dtable.rb
require 'Dobjects/Dtable'
require 'test/unit'
class TestDtable < Test::Unit::TestCase
include Dobjects
def read_data # do this first to read in the test.data array
return if @arr != nil
@num_cols = 4; @num_rows = 5
@arr = Dtable.new(@num_cols, @num_rows)
dir = File.dirname(__FILE__)
if dir.empty?
file = "dtable_test.data"
else
file = "#{dir}/dtable_test.data"
end
@arr.read(file, 1) # skip the first line
assert_equal(@num_cols, @arr.num_cols)
assert_equal(@num_rows, @arr.num_rows)
end
def test_at
read_data
assert_equal(7, @arr.at(1,2))
assert_equal(0.1, @arr.at(2,0))
assert_equal(-1.1, @arr.at(2,1))
assert_equal(2.2, @arr[2,2])
assert_equal(-3.3, @arr[2,3])
tmp = @arr[3,2]
@arr[3,2] = 1e3
assert_equal(1e3, @arr[3,2])
@arr[3,2] = tmp
assert_equal(tmp, @arr[3,2])
end
def test_array_ops
read_data
@ar2 = @arr.dup
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j], @ar2[i,j])
end
end
assert_equal(@num_rows, @arr.num_rows)
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j], @ar2[i,j])
end
end
last_row = @num_rows - 1
last_col = @num_cols - 1
@arr[0,0] = 0
@arr[0,last_col] = 1
@arr[last_row,0] = 2
@arr[last_row,last_col] = 3
@ar2 = @arr.transpose
assert_equal(@num_cols, @ar2.num_rows)
assert_equal(@num_rows, @ar2.num_cols)
assert_equal(@ar2[0,0], 0)
assert_equal(@ar2[last_col,0], 1)
assert_equal(@ar2[0,last_row], 2)
assert_equal(@ar2[last_col,last_row], 3)
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j], @ar2[j,i])
end
end
@ar2 = @arr.reverse_rows
assert_equal(@num_cols, @ar2.num_cols)
assert_equal(@num_rows, @ar2.num_rows)
assert_equal(@ar2[0,0], 2)
assert_equal(@ar2[0,last_col], 3)
assert_equal(@ar2[last_row,0], 0)
assert_equal(@ar2[last_row,last_col], 1)
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j], @ar2[last_row-i,j])
end
end
@ar2 = @arr.reverse_cols
assert_equal(@num_cols, @ar2.num_cols)
assert_equal(@num_rows, @ar2.num_rows)
assert_equal(@ar2[0,0], 1)
assert_equal(@ar2[0,last_col], 0)
assert_equal(@ar2[last_row,0], 3)
assert_equal(@ar2[last_row,last_col], 2)
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j], @ar2[i,last_col-j])
end
end
@ar2 = @arr.rotate_ccw90
assert_equal(@num_cols, @ar2.num_rows)
assert_equal(@num_rows, @ar2.num_cols)
assert_equal(@ar2[0,0], 1)
assert_equal(@ar2[0,last_row], 3)
assert_equal(@ar2[last_col,0], 0)
assert_equal(@ar2[last_col,last_row], 2)
@ar2 = @arr.rotate_cw90
assert_equal(@num_cols, @ar2.num_rows)
assert_equal(@num_rows, @ar2.num_cols)
assert_equal(@ar2[0,0], 2)
assert_equal(@ar2[0,last_row], 0)
assert_equal(@ar2[last_col,0], 3)
assert_equal(@ar2[last_col,last_row], 1)
@ar2.set(-1)
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(-1, @ar2[j,i])
end
end
assert_equal(-9, @arr.min)
assert_equal(8, @arr.max)
assert_equal(2, @arr.min_gt(1))
assert_equal(7, @arr.max_lt(8))
end
def test_math_ops
read_data
@ar2 = @arr + 2
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j]+2, @ar2[i,j])
end
end
@ar2 = 2 * @arr
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(2 * @arr[i,j], @ar2[i,j])
end
end
@ar2 = @arr.floor
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j].floor, @ar2[i,j])
end
end
@ar2 = @arr.pow(3)
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j].pow(3), @ar2[i,j])
end
end
@ar2 = @arr.safe_log10
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j].safe_log10, @ar2[i,j])
end
end
end
def test_bang_ops
read_data
@ar2 = @arr.dup.abs!.safe_sqrt!
@num_rows.times do |i|
@num_cols.times do |j|
assert_equal(@arr[i,j].abs.safe_sqrt, @ar2[i,j])
end
end
end
def test_dvec_ops
read_data
@row1 = @arr.row(1)
assert_equal(@num_cols, @row1.size)
@num_cols.times do |j|
assert_equal(@arr[1,j], @row1[j])
end
@col1 = @arr.column(1)
assert_equal(@num_rows, @col1.size)
@num_rows.times do |i|
assert_equal(@arr[i,1], @col1[i])
end
@arr.set_row(2,@row1)
@num_cols.times do |j|
assert_equal(@arr[2,j], @row1[j])
end
@arr.set_column(2,@col1)
@num_rows.times do |i|
assert_equal(@arr[i,2], @col1[i])
end
end
def test_marshal
t = Dtable.new(3,4)
t[1,1] = 1.2
t[3,2] = 2.5
str = Marshal.dump(t)
tbis = Marshal.restore(str)
assert_equal(t.num_rows, tbis.num_rows)
i = 0
while i < t.num_rows
assert_equal(t.row(i), tbis.row(i))
i += 1
end
end
end
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