ast:String() method and tests

1 files changed, 28 insertions, 0 deletions

diff --git a/ast/ast_test.go b/ast/ast_test.go
new file mode 100644
index 0000000..e16cc11
--- /dev/null
+++ b/ast/ast_test.go
@@ -0,0 +1,28 @@
+package ast
+
+import (
+	"mana/tokens"
+	"testing"
+)
+
+func TestString(t *testing.T) {
+	var program = &Program{
+		Statements: []Statement{
+			&LetStatement{
+				Token: tokens.Token{Type: tokens.LET, Literal: "let"},
+				Name: &Identifier{
+					Token: tokens.Token{Type: tokens.IDENT, Literal: "myVar"},
+					Value: "myVar",
+				},
+				Value: &Identifier{
+					Token: tokens.Token{Type: tokens.IDENT, Literal: "anotherVar"},
+					Value: "anotherVar",
+				},
+			},
+		},
+	}
+
+	if program.String() != "let myVar = anotherVar;" {
+		t.Errorf("program.String() wrong. got=%q", program.String())
+	}
+}