1 files changed, 19 insertions, 0 deletions
diff --git a/subex/subexast_test.go b/subex/subexast_test.go
new file mode 100644
index 0000000..156162e
--- /dev/null
+++ b/subex/subexast_test.go
@@ -0,0 +1,19 @@
+package subex
+
+import (
+	"testing"
+)
+
+func expectASTEqual(t *testing.T, ast SubexAST, expected SubexAST) {
+	if ast == expected {
+		return
+	}
+
+	t.Fatalf("Expected %v, found %v", expected, ast)
+}
+
+func expectAST(t *testing.T, subex string, expected SubexAST) {
+	lexer := NewStringRuneReader(subex)
+	ast := Parse(lexer)
+	expectASTEqual(t, ast, expected)
+}