shard-spectator/spec/matchers/equality_matcher_spec.cr
2019-03-07 16:12:23 -07:00

173 lines
5.7 KiB
Crystal

require "../spec_helper"
describe Spectator::Matchers::EqualityMatcher do
describe "#match" do
it "compares using #==" do
spy = SpySUT.new
partial = new_partial(spy)
matcher = Spectator::Matchers::EqualityMatcher.new(42)
matcher.match(partial)
spy.eq_call_count.should be > 0
end
context "returned MatchData" do
describe "#matched?" do
context "with identical values" do
it "is true" do
value = 42
partial = new_partial(value)
matcher = Spectator::Matchers::EqualityMatcher.new(value)
match_data = matcher.match(partial)
match_data.matched?.should be_true
end
end
context "with different values" do
it "is false" do
value1 = 42
value2 = 777
partial = new_partial(value1)
matcher = Spectator::Matchers::EqualityMatcher.new(value2)
match_data = matcher.match(partial)
match_data.matched?.should be_false
end
end
context "with the same instance" do
it "is true" do
# Box is used because it is a reference type and doesn't override the == method.
ref = Box.new([] of Int32)
partial = new_partial(ref)
matcher = Spectator::Matchers::EqualityMatcher.new(ref)
match_data = matcher.match(partial)
match_data.matched?.should be_true
end
end
context "with different instances" do
context "with same contents" do
it "is true" do
array1 = [1, 2, 3]
array2 = [1, 2, 3]
partial = new_partial(array1)
matcher = Spectator::Matchers::EqualityMatcher.new(array2)
match_data = matcher.match(partial)
match_data.matched?.should be_true
end
end
context "with different contents" do
it "is false" do
array1 = [1, 2, 3]
array2 = [4, 5, 6]
partial = new_partial(array1)
matcher = Spectator::Matchers::EqualityMatcher.new(array2)
match_data = matcher.match(partial)
match_data.matched?.should be_false
end
end
end
end
describe "#values" do
context "expected" do
it "is the expected value" do
expected, actual = 42, 777
partial = new_partial(actual)
matcher = Spectator::Matchers::EqualityMatcher.new(expected)
match_data = matcher.match(partial)
match_data.values[:expected].value.should eq(expected)
end
end
context "actual" do
it "is the actual value" do
expected, actual = 42, 777
partial = new_partial(actual)
matcher = Spectator::Matchers::EqualityMatcher.new(expected)
match_data = matcher.match(partial)
match_data.values[:actual].should eq(actual)
end
end
end
describe "#message" do
it "mentions ==" do
value = 42
partial = new_partial(value)
matcher = Spectator::Matchers::EqualityMatcher.new(value)
match_data = matcher.match(partial)
match_data.message.should contain("==")
end
it "contains the actual label" do
value = 42
label = "everything"
partial = new_partial(value, label)
matcher = Spectator::Matchers::EqualityMatcher.new(value)
match_data = matcher.match(partial)
match_data.message.should contain(label)
end
it "contains the expected label" do
value = 42
label = "everything"
partial = new_partial(value)
matcher = Spectator::Matchers::EqualityMatcher.new(value, label)
match_data = matcher.match(partial)
match_data.message.should contain(label)
end
context "when expected label is omitted" do
it "contains stringified form of expected value" do
value1 = 42
value2 = 777
partial = new_partial(value1)
matcher = Spectator::Matchers::EqualityMatcher.new(value2)
match_data = matcher.match(partial)
match_data.message.should contain(value2.to_s)
end
end
end
describe "#negated_message" do
it "mentions ==" do
value = 42
partial = new_partial(value)
matcher = Spectator::Matchers::EqualityMatcher.new(value)
match_data = matcher.match(partial)
match_data.negated_message.should contain("==")
end
it "contains the actual label" do
value = 42
label = "everything"
partial = new_partial(value, label)
matcher = Spectator::Matchers::EqualityMatcher.new(value)
match_data = matcher.match(partial)
match_data.negated_message.should contain(label)
end
it "contains the expected label" do
value = 42
label = "everything"
partial = new_partial(value)
matcher = Spectator::Matchers::EqualityMatcher.new(value, label)
match_data = matcher.match(partial)
match_data.negated_message.should contain(label)
end
context "when expected label is omitted" do
it "contains stringified form of expected value" do
value1 = 42
value2 = 777
partial = new_partial(value1)
matcher = Spectator::Matchers::EqualityMatcher.new(value2)
match_data = matcher.match(partial)
match_data.negated_message.should contain(value2.to_s)
end
end
end
end
end
end