chore: reorganize directories

src/tests.rs

@@ -0,0 +1,24 @@
+//! test utils
+
+use nom::IResult;
+use rowan::{ast::AstNode, SyntaxNode};
+
+use crate::{
+    syntax::{combinator::GreenElement, input::Input},
+    ParseConfig,
+};
+
+pub fn to_ast<N: AstNode>(
+    parser: impl Fn(Input) -> IResult<Input, GreenElement, ()>,
+) -> impl Fn(&str) -> N {
+    move |s: &str| {
+        let input = Input {
+            s,
+            c: &ParseConfig::default(),
+        };
+        let element = parser(input).unwrap().1;
+        let node = element.into_node().unwrap();
+        let node = SyntaxNode::<N::Language>::new_root(node);
+        AstNode::cast(node).unwrap()
+    }
+}