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require 'spec_helper'
module RSpec::Matchers::BuiltIn
describe BaseMatcher do
describe "#match_unless_raises" do
let(:matcher) do
Class.new(BaseMatcher).new
end
it "returns true if there are no errors" do
expect(matcher.match_unless_raises {}).to be_true
end
it "returns false if there is an error" do
expect(matcher.match_unless_raises { raise }).to be_false
end
it "returns false if the only submitted error is raised" do
expect(matcher.match_unless_raises(RuntimeError){ raise "foo" }).to be_false
end
it "returns false if any of several errors submitted is raised" do
expect(matcher.match_unless_raises(RuntimeError, ArgumentError, NameError) { raise "foo" }).to be_false
expect(matcher.match_unless_raises(RuntimeError, ArgumentError, NameError) { raise ArgumentError.new('') }).to be_false
expect(matcher.match_unless_raises(RuntimeError, ArgumentError, NameError) { raise NameError.new('') }).to be_false
end
it "re-raises any error other than one of those specified" do
expect do
matcher.match_unless_raises(ArgumentError){ raise "foo" }
end.to raise_error
end
it "stores the rescued exception for use in messages" do
matcher.match_unless_raises(RuntimeError){ raise "foo" }
expect(matcher.rescued_exception).to be_a(RuntimeError)
expect(matcher.rescued_exception.message).to eq("foo")
end
end
describe "#==" do
it "responds the same way as matches?" do
matcher = Class.new(BaseMatcher) do
def initialize(expected)
@expected = expected
end
def matches?(actual)
(@actual = actual) == @expected
end
end
expect(matcher.new(3).matches?(3)).to be_true
expect(matcher.new(3)).to eq(3)
expect(matcher.new(3).matches?(4)).to be_false
expect(matcher.new(3)).not_to eq(4)
end
end
end
end
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