Add like function test

pkg/stdlib/strings/like_test.go

@@ -1 +1,66 @@
 package strings_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/MontFerret/ferret/pkg/runtime/values"
+	"github.com/MontFerret/ferret/pkg/stdlib/strings"
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestLike(t *testing.T) {
+	Convey("When args are not passed", t, func() {
+		Convey("It should return an error", func() {
+			var err error
+			_, err = strings.Like(context.Background())
+
+			So(err, ShouldBeError)
+
+			_, err = strings.Like(context.Background(), values.NewString(""))
+
+			So(err, ShouldBeError)
+		})
+	})
+
+	Convey("Should return true when matches with _ pattern", t, func() {
+		out, _ := strings.Like(
+			context.Background(),
+			values.NewString("cart"),
+			values.NewString("ca_t"),
+		)
+
+		So(out, ShouldEqual, true)
+	})
+
+	Convey("Should return true when matches with % pattern", t, func() {
+		out, _ := strings.Like(
+			context.Background(),
+			values.NewString("foo bar baz"),
+			values.NewString("%bar%"),
+		)
+
+		So(out, ShouldEqual, true)
+	})
+
+	Convey("Should return false when matches with no caseInsensitive parameter", t, func() {
+		out, _ := strings.Like(
+			context.Background(),
+			values.NewString("FoO bAr BaZ"),
+			values.NewString("fOo%bAz"),
+		)
+
+		So(out, ShouldEqual, false)
+	})
+
+	Convey("Should return true when matches with caseInsensitive parameter", t, func() {
+		out, _ := strings.Like(
+			context.Background(),
+			values.NewString("FoO bAr BaZ"),
+			values.NewString("fOo%bAz"),
+			values.True,
+		)
+
+		So(out, ShouldEqual, true)
+	})
+}