diff --git a/pkg/runtime/core/source_test.go b/pkg/runtime/core/source_test.go
new file mode 100644
index 00000000..b201b1fc
--- /dev/null
+++ b/pkg/runtime/core/source_test.go
@@ -0,0 +1,24 @@
+package core_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/MontFerret/ferret/pkg/runtime/core"
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestNewSourceMap(t *testing.T) {
+	Convey("Should match", t, func() {
+		s := core.NewSourceMap("test", 1, 100)
+		sFmt := fmt.Sprintf("%s at %d:%d", "test", 1, 100)
+
+		So(s, ShouldNotBeNil)
+
+		So(s.Line(), ShouldEqual, 1)
+
+		So(s.Column(), ShouldEqual, 100)
+
+		So(s.String(), ShouldEqual, sFmt)
+	})
+}