shard-spectator/spec/matchers/start_with_matcher_spec.cr

require "../spec_helper"

describe Spectator::Matchers::StartWithMatcher do
  describe "#match" do
    context "returned MatchData" do
      describe "#matched?" do
        context "with a String" do
          context "against a matching string" do
            it "is true" do
              value = "foobar"
              start = "foo"
              partial = new_partial(value)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_true
            end

            context "not at start" do
              it "is false" do
                value = "foobar"
                start = "bar"
                partial = new_partial(value)
                matcher = Spectator::Matchers::StartWithMatcher.new(start)
                match_data = matcher.match(partial)
                match_data.matched?.should be_false
              end
            end
          end

          context "against a different string" do
            it "is false" do
              value = "foobar"
              start = "baz"
              partial = new_partial(value)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_false
            end
          end

          context "against a matching character" do
            it "is true" do
              value = "foobar"
              start = 'f'
              partial = new_partial(value)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_true
            end

            context "not at start" do
              it "is false" do
                value = "foobar"
                start = 'b'
                partial = new_partial(value)
                matcher = Spectator::Matchers::StartWithMatcher.new(start)
                match_data = matcher.match(partial)
                match_data.matched?.should be_false
              end
            end
          end

          context "against a different character" do
            it "is false" do
              value = "foobar"
              start = 'z'
              partial = new_partial(value)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_false
            end
          end

          context "against a matching regex" do
            it "is true" do
              value = "FOOBAR"
              start = /foo/i
              partial = new_partial(value)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_true
            end

            context "not at start" do
              it "is false" do
                value = "FOOBAR"
                start = /bar/i
                partial = new_partial(value)
                matcher = Spectator::Matchers::StartWithMatcher.new(start)
                match_data = matcher.match(partial)
                match_data.matched?.should be_false
              end
            end
          end

          context "against a non-matching regex" do
            it "is false" do
              value = "FOOBAR"
              start = /baz/i
              partial = new_partial(value)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_false
            end
          end
        end

        context "with an Enumberable" do
          context "against an equal value" do
            it "is true" do
              array = %i[a b c]
              start = :a
              partial = new_partial(array)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_true
            end

            context "not at start" do
              it "is false" do
                array = %i[a b c]
                start = :b
                partial = new_partial(array)
                matcher = Spectator::Matchers::StartWithMatcher.new(start)
                match_data = matcher.match(partial)
                match_data.matched?.should be_false
              end
            end
          end

          context "against a different value" do
            it "is false" do
              array = %i[a b c]
              start = :z
              partial = new_partial(array)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_false
            end
          end

          context "against matching element type" do
            it "is true" do
              array = %i[a b c]
              partial = new_partial(array)
              matcher = Spectator::Matchers::StartWithMatcher.new(Symbol)
              match_data = matcher.match(partial)
              match_data.matched?.should be_true
            end

            context "not at start" do
              it "is false" do
                array = [1, 2, 3, :a, :b, :c]
                partial = new_partial(array)
                matcher = Spectator::Matchers::StartWithMatcher.new(Symbol)
                match_data = matcher.match(partial)
                match_data.matched?.should be_false
              end
            end
          end

          context "against different element type" do
            it "is false" do
              array = %i[a b c]
              partial = new_partial(array)
              matcher = Spectator::Matchers::StartWithMatcher.new(Int32)
              match_data = matcher.match(partial)
              match_data.matched?.should be_false
            end
          end

          context "against a matching regex" do
            it "is true" do
              array = %w[FOO BAR BAZ]
              start = /foo/i
              partial = new_partial(array)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_true
            end

            context "not at start" do
              it "is false" do
                array = %w[FOO BAR BAZ]
                start = /bar/i
                partial = new_partial(array)
                matcher = Spectator::Matchers::StartWithMatcher.new(start)
                match_data = matcher.match(partial)
                match_data.matched?.should be_false
              end
            end
          end

          context "against a non-matching regex" do
            it "is false" do
              array = %w[FOO BAR BAZ]
              start = /qux/i
              partial = new_partial(array)
              matcher = Spectator::Matchers::StartWithMatcher.new(start)
              match_data = matcher.match(partial)
              match_data.matched?.should be_false
            end
          end
        end
      end

      describe "#values" do
        context "with a String" do
          context "expected" do
            it "is the expected value" do
              value = "FOOBAR"
              first = /baz/i
              partial = new_partial(value)
              matcher = Spectator::Matchers::StartWithMatcher.new(first)
              match_data = matcher.match(partial)
              match_data.values[:expected].should eq(first)
            end
          end

          context "actual" do
            it "is the actual value" do
              value = "FOOBAR"
              first = /baz/i
              partial = new_partial(value)
              matcher = Spectator::Matchers::StartWithMatcher.new(first)
              match_data = matcher.match(partial)
              match_data.values[:actual].should eq(value)
            end
          end
        end

        context "with an Indexable" do
          context "expected" do
            it "is the expected value" do
              array = %w[FOO BAR BAZ]
              first = /qux/i
              partial = new_partial(array)
              matcher = Spectator::Matchers::StartWithMatcher.new(first)
              match_data = matcher.match(partial)
              match_data.values[:expected].should eq(first)
            end
          end

          context "actual" do
            it "is the first element" do
              array = %w[FOO BAR BAZ]
              first = /qux/i
              partial = new_partial(array)
              matcher = Spectator::Matchers::StartWithMatcher.new(first)
              match_data = matcher.match(partial)
              match_data.values[:actual].should eq(array.first)
            end
          end

          context "list" do
            it "is the full actual list" do
              array = %w[FOO BAR BAZ]
              first = /qux/i
              partial = new_partial(array)
              matcher = Spectator::Matchers::StartWithMatcher.new(first)
              match_data = matcher.match(partial)
              match_data.values[:list].should eq(array)
            end
          end
        end
      end

      describe "#message" do
        context "with a String" do
          it "mentions #starts_with?" do
            value = "foobar"
            start = "baz"
            partial = new_partial(value)
            matcher = Spectator::Matchers::StartWithMatcher.new(start)
            match_data = matcher.match(partial)
            match_data.message.should contain("#starts_with?")
          end
        end

        context "with an Enumerable" do
          it "mentions ===" do
            array = %i[a b c]
            partial = new_partial(array)
            matcher = Spectator::Matchers::StartWithMatcher.new(array.first)
            match_data = matcher.match(partial)
            match_data.message.should contain("===")
          end

          it "mentions first" do
            array = %i[a b c]
            partial = new_partial(array)
            matcher = Spectator::Matchers::StartWithMatcher.new(array.first)
            match_data = matcher.match(partial)
            match_data.message.should contain("first")
          end
        end

        it "contains the actual label" do
          value = "foobar"
          start = "baz"
          label = "everything"
          partial = new_partial(value, label)
          matcher = Spectator::Matchers::StartWithMatcher.new(start)
          match_data = matcher.match(partial)
          match_data.message.should contain(label)
        end

        it "contains the expected label" do
          value = "foobar"
          start = "baz"
          label = "everything"
          partial = new_partial(value)
          matcher = Spectator::Matchers::StartWithMatcher.new(start, 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
            value = "foobar"
            start = "baz"
            partial = new_partial(value)
            matcher = Spectator::Matchers::StartWithMatcher.new(start)
            match_data = matcher.match(partial)
            match_data.message.should contain(start)
          end
        end
      end

      describe "#negated_message" do
        context "with a String" do
          it "mentions #starts_with?" do
            value = "foobar"
            start = "baz"
            partial = new_partial(value)
            matcher = Spectator::Matchers::StartWithMatcher.new(start)
            match_data = matcher.match(partial)
            match_data.negated_message.should contain("#starts_with?")
          end
        end

        context "with an Enumerable" do
          it "mentions ===" do
            array = %i[a b c]
            partial = new_partial(array)
            matcher = Spectator::Matchers::StartWithMatcher.new(array.first)
            match_data = matcher.match(partial)
            match_data.negated_message.should contain("===")
          end

          it "mentions first" do
            array = %i[a b c]
            partial = new_partial(array)
            matcher = Spectator::Matchers::StartWithMatcher.new(array.first)
            match_data = matcher.match(partial)
            match_data.negated_message.should contain("first")
          end
        end

        it "contains the actual label" do
          value = "foobar"
          start = "baz"
          label = "everything"
          partial = new_partial(value, label)
          matcher = Spectator::Matchers::StartWithMatcher.new(start)
          match_data = matcher.match(partial)
          match_data.negated_message.should contain(label)
        end

        it "contains the expected label" do
          value = "foobar"
          start = "baz"
          label = "everything"
          partial = new_partial(value)
          matcher = Spectator::Matchers::StartWithMatcher.new(start, 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
            value = "foobar"
            start = "baz"
            partial = new_partial(value)
            matcher = Spectator::Matchers::StartWithMatcher.new(start)
            match_data = matcher.match(partial)
            match_data.negated_message.should contain(start)
          end
        end
      end
    end
  end
end