##
# Integer ISO Test
assert('Integer', '15.2.8') do
Integer.class == Class
end
assert('Integer superclass', '15.2.8.2') do
Integer.superclass == Numeric
end
assert('Integer#+', '15.2.8.3.1') do
a = 1+1
b = 1+1.0
a == 2 and b == 2.0
end
assert('Integer#-', '15.2.8.3.2') do
a = 2-1
b = 2-1.0
a == 1 and b == 1.0
end
assert('Integer#*', '15.2.8.3.3') do
a = 1*1
b = 1*1.0
a == 1 and b == 1.0
end
assert('Integer#/', '15.2.8.3.4') do
a = 2/1
b = 2/1.0
a == 2 and b == 2.0
end
assert('Integer#%', '15.2.8.3.5') do
a = 1%1
b = 1%1.0
c = 2%4
a == 0 and b == 0.0 and c == 2
end
assert('Integer#<=>', '15.2.8.3.6') do
a = 1<=>0
b = 1<=>1
c = 1<=>2
a == 1 and b == 0 and c == -1
end
assert('Integer#==', '15.2.8.3.7') do
a = 1==0
b = 1==1
a == false and b == true
end
assert('Integer#~', '15.2.8.3.8') do
# Complement
~0 == -1 and ~2 == -3
end
assert('Integer#&', '15.2.8.3.9') do
# Bitwise AND
# 0101 (5)
# & 0011 (3)
# = 0001 (1)
5 & 3 == 1
end
assert('Integer#|', '15.2.8.3.10') do
# Bitwise OR
# 0101 (5)
# | 0011 (3)
# = 0111 (7)
5 | 3 == 7
end
assert('Integer#^', '15.2.8.3.11') do
# Bitwise XOR
# 0101 (5)
# ^ 0011 (3)
# = 0110 (6)
5 ^ 3 == 6
end
assert('Integer#<<', '15.2.8.3.12') do
# Left Shift by one
# 00010111 (23)
# = 00101110 (46)
23 << 1 == 46
end
assert('Integer#>>', '15.2.8.3.13') do
# Right Shift by one
# 00101110 (46)
# = 00010111 (23)
46 >> 1 == 23
end
assert('Integer#ceil', '15.2.8.3.14') do
10.ceil == 10
end
assert('Integer#downto', '15.2.8.3.15') do
a = 0
3.downto(1) do |i|
a += i
end
a == 6
end
assert('Integer#eql?', '15.2.8.3.16') do
a = 1.eql?(1)
b = 1.eql?(2)
c = 1.eql?(nil)
a == true and b == false and c == false
end
assert('Integer#floor', '15.2.8.3.17') do
a = 1.floor
a == 1
end
assert('Integer#next', '15.2.8.3.19') do
1.next == 2
end
assert('Integer#round', '15.2.8.3.20') do
1.round == 1
end
assert('Integer#succ', '15.2.8.3.21') do
1.succ == 2
end
assert('Integer#times', '15.2.8.3.22') do
a = 0
3.times do
a += 1
end
a == 3
end
assert('Integer#to_f', '15.2.8.3.23') do
1.to_f == 1.0
end
assert('Integer#to_i', '15.2.8.3.24') do
1.to_i == 1
end
assert('Integer#to_s', '15.2.8.3.25') do
1.to_s == '1' and -1.to_s == "-1"
end
assert('Integer#truncate', '15.2.8.3.26') do
1.truncate == 1
end
assert('Integer#upto', '15.2.8.3.27') do
a = 0
1.upto(3) do |i|
a += i
end
a == 6
end