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Contents
# -*- encoding: utf-8 -*-
require 'test_helper'
require 'hexapdf/utils/bit_field'
class TestBitField
extend HexaPDF::Utils::BitField
attr_accessor :data
bit_field(:data, {bit0: 0, bit1: 1, bit5: 5}, lister: "list", getter: "get", setter: "set",
unsetter: 'unset')
end
describe HexaPDF::Utils::BitField do
before do
@obj = TestBitField.new
end
it "allows inspection of the defined bits" do
assert_equal({bit0: 0, bit1: 1, bit5: 5}, TestBitField::DATA_BIT_MAPPING)
end
it "returns all bit names using the lister method" do
@obj.data = 0b100011
assert_equal([:bit0, :bit1, :bit5], @obj.list)
@obj.data = 0b100001
assert_equal([:bit0, :bit5], @obj.list)
end
it "can check whether a given bit is set via the getter method" do
refute(@obj.get(:bit0))
@obj.data = 0b000001
assert(@obj.get(:bit0))
assert(@obj.get(0))
refute(@obj.get(:bit1))
refute(@obj.get(1))
end
it "can set a given bit via the setter method" do
assert_nil(@obj.data)
@obj.set(:bit0, :bit1, :bit5)
assert_equal(0b100011, @obj.data)
@obj.set(:bit0, 5, clear_existing: true)
assert_equal(0b100001, @obj.data)
end
it "can unset a given bit via the unsetter method" do
@obj.set(:bit0, :bit5)
assert_equal(0b100001, @obj.data)
@obj.unset(:bit5)
assert_equal(0b000001, @obj.data)
end
it "fails if an unknown bit name or bit index is used with one of the methods" do
e = assert_raises(ArgumentError) { @obj.get(10) }
assert_equal("Invalid bit field name or index '10' for TestBitField#data", e.message)
e = assert_raises(ArgumentError) { @obj.get(:bit10) }
assert_equal("Invalid bit field name or index 'bit10' for TestBitField#data", e.message)
end
end
Version data entries
69 entries across 69 versions & 1 rubygems