shard-spectator/spec/matchers/truthy_matcher_spec.cr
Michael Miller c31557e8ff Move everything in BeComparison to TruthyMatcher
This is to match RSpec's ability to use "be" by itself.
For instance: `expect(foo).to be`
2019-01-23 22:10:03 -07:00

236 lines
6.9 KiB
Crystal

require "../spec_helper"
# This is a terrible hack,
# but I don't want to expose `ValueMatcher#expected` publicly
# just for this spec.
module Spectator::Matchers
struct ValueMatcher(ExpectedType)
def expected_value
expected
end
end
end
def be_comparison
Spectator::Matchers::TruthyMatcher.new(true)
end
describe Spectator::Matchers::TruthyMatcher do
context "truthy" do
describe "#match?" do
context "with a truthy value" do
it "is true" do
value = 42
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(true)
matcher.match?(partial).should be_true
end
end
context "with false" do
it "is false" do
value = false
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(true)
matcher.match?(partial).should be_false
end
end
context "with nil" do
it "is false" do
value = nil
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(true)
matcher.match?(partial).should be_false
end
end
end
describe "#message" do
it "contains the actual label" do
value = 42
label = "everything"
partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
matcher = Spectator::Matchers::TruthyMatcher.new(true)
matcher.message(partial).should contain(label)
end
it "contains the \"truthy\"" do
value = 42
label = "everything"
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(true)
matcher.message(partial).should contain("truthy")
end
end
describe "#negated_message" do
it "contains the actual label" do
value = 42
label = "everything"
partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
matcher = Spectator::Matchers::TruthyMatcher.new(true)
matcher.negated_message(partial).should contain(label)
end
it "contains the \"truthy\"" do
value = 42
label = "everything"
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(true)
matcher.negated_message(partial).should contain("truthy")
end
end
end
context "falsey" do
describe "#match?" do
context "with a truthy value" do
it "is false" do
value = 42
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(false)
matcher.match?(partial).should be_false
end
end
context "with false" do
it "is true" do
value = false
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(false)
matcher.match?(partial).should be_true
end
end
context "with nil" do
it "is true" do
value = nil
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(false)
matcher.match?(partial).should be_true
end
end
end
describe "#message" do
it "contains the actual label" do
value = 42
label = "everything"
partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
matcher = Spectator::Matchers::TruthyMatcher.new(false)
matcher.message(partial).should contain(label)
end
it "contains the \"falsey\"" do
value = 42
label = "everything"
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(false)
matcher.message(partial).should contain("falsey")
end
end
describe "#negated_message" do
it "contains the actual label" do
value = 42
label = "everything"
partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
matcher = Spectator::Matchers::TruthyMatcher.new(false)
matcher.negated_message(partial).should contain(label)
end
it "contains the \"falsey\"" do
value = 42
label = "everything"
partial = Spectator::Expectations::ValueExpectationPartial.new(value)
matcher = Spectator::Matchers::TruthyMatcher.new(false)
matcher.negated_message(partial).should contain("falsey")
end
end
end
describe "#<" do
it "returns a LessThanMatcher" do
value = 0
matcher = be_comparison < value
matcher.should be_a(Spectator::Matchers::LessThanMatcher(typeof(value)))
end
it "passes along the expected value" do
value = 42
matcher = be_comparison < value
matcher.expected_value.should eq(value)
end
end
describe "#<=" do
it "returns a LessThanEqualMatcher" do
value = 0
matcher = be_comparison <= value
matcher.should be_a(Spectator::Matchers::LessThanEqualMatcher(typeof(value)))
end
it "passes along the expected value" do
value = 42
matcher = be_comparison <= value
matcher.expected_value.should eq(value)
end
end
describe "#>" do
it "returns a GreaterThanMatcher" do
value = 0
matcher = be_comparison > value
matcher.should be_a(Spectator::Matchers::GreaterThanMatcher(typeof(value)))
end
it "passes along the expected value" do
value = 42
matcher = be_comparison > value
matcher.expected_value.should eq(value)
end
end
describe "#>=" do
it "returns a GreaterThanEqualMatcher" do
value = 0
matcher = be_comparison >= value
matcher.should be_a(Spectator::Matchers::GreaterThanEqualMatcher(typeof(value)))
end
it "passes along the expected value" do
value = 42
matcher = be_comparison >= value
matcher.expected_value.should eq(value)
end
end
describe "#==" do
it "returns an EqualityMatcher" do
value = 0
matcher = be_comparison == value
matcher.should be_a(Spectator::Matchers::EqualityMatcher(typeof(value)))
end
it "passes along the expected value" do
value = 42
matcher = be_comparison == value
matcher.expected_value.should eq(value)
end
end
describe "#!=" do
it "returns an InequalityMatcher" do
value = 0
matcher = be_comparison != value
matcher.should be_a(Spectator::Matchers::InequalityMatcher(typeof(value)))
end
it "passes along the expected value" do
value = 42
matcher = be_comparison != value
matcher.expected_value.should eq(value)
end
end
end