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Update HaveKeyMatcher to use MatchData
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2 changed files with 172 additions and 98 deletions
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@ -1,108 +1,165 @@
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require "../spec_helper"
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private struct FakeKeySet
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def has_key?(key)
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true
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end
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end
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describe Spectator::Matchers::HaveKeyMatcher do
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describe "#match?" do
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context "against a Hash" do
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context "with an existing key" do
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it "is true" do
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hash = Hash{"foo" => "bar"}
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key = "foo"
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partial = new_partial(hash)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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matcher.match?(partial).should be_true
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describe "#match" do
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context "returned MatchData" do
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describe "#matched?" do
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context "against a Hash" do
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context "with an existing key" do
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it "is true" do
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hash = Hash{"foo" => "bar"}
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key = "foo"
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partial = new_partial(hash)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.matched?.should be_true
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end
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end
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context "with a non-existent key" do
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it "is false" do
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hash = Hash{"foo" => "bar"}
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key = "baz"
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partial = new_partial(hash)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.matched?.should be_false
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end
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end
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end
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context "against a NamedTuple" do
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context "with an existing key" do
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it "is true" do
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tuple = {foo: "bar"}
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key = :foo
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.matched?.should be_true
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end
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end
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context "with a non-existent key" do
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it "is false" do
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tuple = {foo: "bar"}
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key = :baz
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.matched?.should be_false
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end
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end
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end
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end
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context "with a non-existent key" do
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it "is false" do
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hash = Hash{"foo" => "bar"}
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key = "baz"
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partial = new_partial(hash)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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matcher.match?(partial).should be_false
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describe "#values" do
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context "key" do
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it "is the expected key" do
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tuple = {foo: "bar"}
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key = :baz
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.values[:key].should eq(key)
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end
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end
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context "actual" do
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context "when #keys is available" do
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it "is the list of keys" do
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tuple = {foo: "bar"}
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key = :baz
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.values[:actual].should eq(tuple.keys)
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end
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end
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context "when #keys isn't available" do
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it "is the actual value" do
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actual = FakeKeySet.new
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key = :baz
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partial = new_partial(actual)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.values[:actual].should eq(actual)
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end
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end
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end
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end
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end
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context "against a NamedTuple" do
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context "with an existing key" do
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it "is true" do
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describe "#message" do
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it "contains the actual label" do
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tuple = {foo: "bar"}
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key = :foo
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partial = new_partial(tuple)
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label = "blah"
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partial = new_partial(tuple, label)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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matcher.match?(partial).should be_true
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match_data = matcher.match(partial)
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match_data.message.should contain(label)
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end
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end
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context "with a non-existent key" do
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it "is false" do
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it "contains the expected label" do
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tuple = {foo: "bar"}
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key = :baz
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key = :foo
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label = "blah"
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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matcher.match?(partial).should be_false
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key, label)
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match_data = matcher.match(partial)
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match_data.message.should contain(label)
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end
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context "when the expected label is omitted" do
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it "contains the stringified key" do
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tuple = {foo: "bar"}
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key = :foo
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.message.should contain(key.to_s)
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end
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end
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end
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end
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end
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describe "#message" do
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it "contains the actual label" do
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tuple = {foo: "bar"}
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key = :foo
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label = "blah"
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partial = new_partial(tuple, label)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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matcher.message(partial).should contain(label)
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end
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describe "#negated_message" do
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it "contains the actual label" do
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tuple = {foo: "bar"}
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key = :foo
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label = "blah"
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partial = new_partial(tuple, label)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.negated_message.should contain(label)
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end
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it "contains the expected label" do
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tuple = {foo: "bar"}
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key = :foo
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label = "blah"
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key, label)
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matcher.message(partial).should contain(label)
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end
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it "contains the expected label" do
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tuple = {foo: "bar"}
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key = :foo
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label = "blah"
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key, label)
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match_data = matcher.match(partial)
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match_data.negated_message.should contain(label)
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end
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context "when the expected label is omitted" do
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it "contains the stringified key" do
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tuple = {foo: "bar"}
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key = :foo
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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matcher.message(partial).should contain(key.to_s)
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end
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end
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end
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describe "#negated_message" do
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it "contains the actual label" do
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tuple = {foo: "bar"}
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key = :foo
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label = "blah"
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partial = new_partial(tuple, label)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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matcher.negated_message(partial).should contain(label)
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end
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it "contains the expected label" do
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tuple = {foo: "bar"}
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key = :foo
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label = "blah"
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key, label)
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matcher.negated_message(partial).should contain(label)
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end
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context "when the expected label is omitted" do
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it "contains the stringified key" do
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tuple = {foo: "bar"}
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key = :foo
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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matcher.negated_message(partial).should contain(key.to_s)
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context "when the expected label is omitted" do
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it "contains the stringified key" do
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tuple = {foo: "bar"}
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key = :foo
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partial = new_partial(tuple)
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matcher = Spectator::Matchers::HaveKeyMatcher.new(key)
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match_data = matcher.match(partial)
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match_data.negated_message.should contain(key.to_s)
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end
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end
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end
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end
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end
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@ -5,27 +5,44 @@ module Spectator::Matchers
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# The set is checked with the `has_key?` method.
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struct HaveKeyMatcher(ExpectedType) < ValueMatcher(ExpectedType)
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# Determines whether the matcher is satisfied with the value given to it.
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# True is returned if the match was successful, false otherwise.
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def match?(partial)
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partial.actual.has_key?(expected)
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private def match?(actual)
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actual.has_key?(expected)
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end
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# Determines whether the matcher is satisfied with the partial given to it.
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# `MatchData` is returned that contains information about the match.
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def match(partial) : MatchData
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raise NotImplementedError.new("#match")
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def match(partial)
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values = ExpectedActual.new(partial, self)
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MatchData.new(match?(values.actual), values)
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end
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# Describes the condition that satisfies the matcher.
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# This is informational and displayed to the end-user.
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def message(partial)
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"Expected #{partial.label} to have key #{label}"
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end
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# Match data specific to this matcher.
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private struct MatchData(ExpectedType, ActualType) < MatchData
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# Creates the match data.
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def initialize(matched, @values : ExpectedActual(ExpectedType, ActualType))
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super(matched)
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end
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# Describes the condition that won't satsify the matcher.
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# This is informational and displayed to the end-user.
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def negated_message(partial)
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"Expected #{partial.label} to not have key #{label}"
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# Information about the match.
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def values
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actual = @values.actual
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{
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key: @values.expected,
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actual: actual.responds_to?(:keys) ? actual.keys : actual,
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}
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end
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# Describes the condition that satisfies the matcher.
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# This is informational and displayed to the end-user.
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def message
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"#{@values.actual_label} has key #{@values.expected_label}"
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end
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# Describes the condition that won't satsify the matcher.
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# This is informational and displayed to the end-user.
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def negated_message
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"#{@values.actual_label} does not have key #{@values.expected_label}"
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end
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end
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end
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end
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