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require "spec"
describe "UInt" do
it "compares with <=>" do
(1_u32 <=> 0_u32).should eq(1)
(0_u32 <=> 0_u32).should eq(0)
(0_u32 <=> 1_u32).should eq(-1)
end
describe "&-" do
it "returns the wrapped negation" do
x = &-0_u32
x.should eq(0_u32)
x.should be_a(UInt32)
x = &-100_u8
x.should eq(156_u8)
x.should be_a(UInt8)
x = &-1_u8
x.should eq(255_u8)
x.should be_a(UInt8)
x = &-255_u8
x.should eq(1_u8)
x.should be_a(UInt8)
x = &-1_u16
x.should eq(65535_u16)
x.should be_a(UInt16)
x = &-65535_u16
x.should eq(1_u16)
x.should be_a(UInt16)
x = &-1_u32
x.should eq(4294967295_u32)
x.should be_a(UInt32)
x = &-4294967295_u32
x.should eq(1_u32)
x.should be_a(UInt32)
x = &-1_u64
x.should eq(18446744073709551615_u64)
x.should be_a(UInt64)
x = &-18446744073709551615_u64
x.should eq(1_u64)
x.should be_a(UInt64)
x = &-1_u128
x.should eq(UInt128::MAX) # TODO: Change to literal once supported
x.should be_a(UInt128)
x = &-(UInt128::MAX) # TODO: Change to literal once supported
x.should eq(1_u128)
x.should be_a(UInt128)
end
end
end
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