refactor: sort unit tests

src/nodes/evaluate.rs

@@ -153,3 +153,22 @@ fn collapse_toplevel(nodes: &mut Vec<Node>, mut end: usize) {
         nodes.remove(start);
     }
 }
+
+use super::PREC;
+
+#[test]
+fn test() {
+    assert_eq!(
+        Nodes(vec![
+            Node::Function(Function::Sine),
+            Node::ParenthesisStart,
+            Node::Number(Float::with_val(PREC, 2)),
+            Node::ParenthesisEnd,
+            Node::Operator(Operator::Plus),
+            Node::Number(Float::with_val(PREC, 1))
+        ])
+        .evaluate()
+        .to_f64(),
+        1.9092974268256817,
+    );
+}

src/nodes/from_str.rs

@@ -188,3 +188,18 @@ impl FromStr for Nodes {
         Ok(Self(nodes))
     }
 }
+
+#[test]
+fn test() {
+    assert_eq!(
+        Nodes::from_str("sin(2) + 1").unwrap().as_ref(),
+        &[
+            Node::Function(Function::Sine),
+            Node::ParenthesisStart,
+            Node::Number(Float::with_val(PREC, 2)),
+            Node::ParenthesisEnd,
+            Node::Operator(Operator::Plus),
+            Node::Number(Float::with_val(PREC, 1))
+        ],
+    )
+}

src/nodes/tests.rs

@@ -1,9 +1,7 @@
 use core::f64;
 use std::str::FromStr;
 
-use rug::Float;
-
-use crate::nodes::{Function, Node, Nodes, Operator, PREC};
+use crate::nodes::Nodes;
 
 fn eval(s: &str) -> f64 {
     Nodes::from_str(s).unwrap().evaluate().to_f64()
@@ -40,35 +38,3 @@ fn unary_operators() {
     assert_eq!(eval("-10"), -10.);
     assert_eq!(eval("+10"), 10.);
 }
-
-#[test]
-fn test_nodes_to_num() {
-    assert_eq!(
-        Nodes(vec![
-            Node::Function(Function::Sine),
-            Node::ParenthesisStart,
-            Node::Number(Float::with_val(PREC, 2)),
-            Node::ParenthesisEnd,
-            Node::Operator(Operator::Plus),
-            Node::Number(Float::with_val(PREC, 1))
-        ])
-        .evaluate()
-        .to_f64(),
-        1.9092974268256817,
-    );
-}
-
-#[test]
-fn test_nodes_from_str() {
-    assert_eq!(
-        Nodes::from_str("sin(2) + 1").unwrap().as_ref(),
-        &[
-            Node::Function(Function::Sine),
-            Node::ParenthesisStart,
-            Node::Number(Float::with_val(PREC, 2)),
-            Node::ParenthesisEnd,
-            Node::Operator(Operator::Plus),
-            Node::Number(Float::with_val(PREC, 1))
-        ],
-    )
-}