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require_relative '../../spec_helper'
require 'bigdecimal'
describe "BigDecimal constants" do
it "defines a VERSION value" do
BigDecimal.const_defined?(:VERSION).should be_true
end
it "has a BASE value" do
# The actual one is decided based on HAVE_INT64_T in MRI,
# which is hard to check here.
[10000, 1000000000].should include(BigDecimal::BASE)
end
it "has a NaN value" do
BigDecimal::NAN.nan?.should be_true
end
it "has an INFINITY value" do
BigDecimal::INFINITY.infinite?.should == 1
end
describe "exception-related constants" do
[
[:EXCEPTION_ALL, 0xff],
[:EXCEPTION_INFINITY, 0x01],
[:EXCEPTION_NaN, 0x02],
[:EXCEPTION_UNDERFLOW, 0x04],
[:EXCEPTION_OVERFLOW, 0x01],
[:EXCEPTION_ZERODIVIDE, 0x10]
].each do |const, value|
it "has a #{const} value" do
BigDecimal.const_get(const).should == value
end
end
end
describe "rounding-related constants" do
[
[:ROUND_MODE, 0x100],
[:ROUND_UP, 1],
[:ROUND_DOWN, 2],
[:ROUND_HALF_UP, 3],
[:ROUND_HALF_DOWN, 4],
[:ROUND_CEILING, 5],
[:ROUND_FLOOR, 6],
[:ROUND_HALF_EVEN, 7]
].each do |const, value|
it "has a #{const} value" do
BigDecimal.const_get(const).should == value
end
end
end
describe "sign-related constants" do
[
[:SIGN_NaN, 0],
[:SIGN_POSITIVE_ZERO, 1],
[:SIGN_NEGATIVE_ZERO, -1],
[:SIGN_POSITIVE_FINITE, 2],
[:SIGN_NEGATIVE_FINITE, -2],
[:SIGN_POSITIVE_INFINITE, 3],
[:SIGN_NEGATIVE_INFINITE, -3]
].each do |const, value|
it "has a #{const} value" do
BigDecimal.const_get(const).should == value
end
end
end
end
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