Complete Integer Tests for ISO

test/t/integer.rb

@@ -56,3 +56,116 @@ assert('Integer#==', '15.2.8.3.7') do
   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
+