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Versions: 10
Compression:
Stored size: 1.58 KB
Contents
require 'helper'
require 'cassanity/decrement'
describe Cassanity::Decrement do
describe "self named helper method" do
it "returns instance" do
Cassanity::Decrement(5).should eq(described_class.new(5))
end
end
describe "#initialize" do
context "with value" do
before do
@instance = described_class.new(5)
end
it "sets value" do
@instance.value.should be(5)
end
it "sets symbol" do
@instance.symbol.should be(:-)
end
end
context "without value" do
it "defaults value to 1" do
subject.value.should be(1)
end
end
context "with nil" do
it "raises error" do
expect {
described_class.new(nil)
}.to raise_error(ArgumentError, "value cannot be nil")
end
end
end
shared_examples_for "decrement equality" do |method_name|
it "returns true for same class and value" do
instance = described_class.new(5)
other = described_class.new(5)
instance.send(method_name, other).should be_true
end
it "returns false for same class and different value" do
instance = described_class.new(5)
other = described_class.new(7)
instance.send(method_name, other).should be_false
end
it "returns false for different class" do
instance = described_class.new(5)
other = Object.new
instance.send(method_name, other).should be_false
end
end
describe "#eql?" do
include_examples "decrement equality", :eql?
end
describe "#==" do
include_examples "decrement equality", :==
end
end
Version data entries
10 entries across 10 versions & 1 rubygems