Implement a minimal evaluator for attrsets

eval/tests/test_eval.rs

@@ -0,0 +1,45 @@
+/*
+* Copyright (C) 2023 Valentin Lorentz
+
+* This program is free software: you can redistribute it and/or modify it under the
+* terms of the GNU Affero General Public License version 3, as published by the Free
+* Software Foundation.
+*
+* This program is distributed in the hope that it will be useful, but WITHOUT ANY
+* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+* PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License along with
+* this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+use autonix_eval::{AttrSet, Evaluator, NixValue, PureEvaluator};
+use rnix::ast::Expr;
+
+fn parse(s: &str) -> Expr {
+    rnix::Root::parse(s).ok().unwrap().expr().unwrap()
+}
+
+#[test]
+fn test_attrset() {
+    assert_eq!(
+        PureEvaluator.eval_expr(&parse(r#"{ a = "Foo"; b = "Bar"; }"#)),
+        AttrSet::from(vec![
+            ("a", NixValue::String("Foo".to_owned())),
+            ("b", NixValue::String("Bar".to_owned()))
+        ])
+        .into()
+    );
+}
+
+#[test]
+fn test_attrset_get() {
+    assert_eq!(
+        PureEvaluator.eval_expr(&parse(r#"{ a = "Foo"; b = "Bar"; }.a"#)),
+        NixValue::String("Foo".to_owned())
+    );
+    assert_eq!(
+        PureEvaluator.eval_expr(&parse(r#"{ a = "Foo"; b = "Bar"; }.b"#)),
+        NixValue::String("Bar".to_owned())
+    );
+}