test setup, silence & expression tests

src/compiler.rs

@@ -1,37 +1,61 @@
-use std::{collections::HashMap, str::FromStr};
+use std::{collections::HashMap, fmt::Debug, str::FromStr};
 
 use derive_new::new;
+use derive_wrapper::{AsRef, From};
 use fasteval::{Compiler, Instruction, Slab};
 
-pub type TokenVec<'a> = Vec<Box<dyn Token + 'a>>;
+#[derive(From, AsRef)]
+#[cfg_attr(test, derive(Debug))]
+pub struct TokenVec<'a>(Vec<Box<dyn Token + 'a>>);
 
+#[cfg(not(test))]
 pub trait Token {
     fn apply(&self, context: Context) -> Context {
         todo!()
     }
 }
 
+#[cfg(test)]
+pub trait Token: Debug {
+    fn apply(&self, context: Context) -> Context {
+        todo!()
+    }
+}
+
+#[cfg(test)]
+impl PartialEq for TokenVec<'_> {
+    fn eq(&self, other: &Self) -> bool {
+        format!("{self:?}") == format!("{other:?}")
+    }
+}
+
 #[derive(Clone, Copy)]
+#[cfg_attr(test, derive(Debug, PartialEq))]
 pub struct Silence;
 
 impl Token for Silence {}
 
 #[derive(Clone, Copy)]
+#[cfg_attr(test, derive(Debug, PartialEq))]
 pub struct Marker;
 
 impl Token for Marker {}
 
 #[derive(Clone, Copy)]
+#[cfg_attr(test, derive(Debug, PartialEq))]
 pub struct Note(pub u8);
 
 impl Token for Note {}
 
+#[cfg_attr(test, derive(Debug, PartialEq))]
 pub struct VariableChange(pub char, pub Expression);
 
 impl Token for VariableChange {}
 
+#[cfg_attr(test, derive(Debug, PartialEq))]
 pub struct Loop<'a>(pub LoopCount, pub TokenVec<'a>);
 
+#[cfg_attr(test, derive(Debug, PartialEq))]
 pub enum LoopCount {
     Litteral(usize),
     Variable(char),
@@ -45,16 +69,18 @@ impl Default for LoopCount {
 
 impl Token for Loop<'_> {}
 
+#[cfg_attr(test, derive(Debug, PartialEq))]
 pub struct Tuplet<'a>(pub TokenVec<'a>);
 
 impl Token for Tuplet<'_> {}
 
+#[cfg_attr(test, derive(Debug, PartialEq))]
 pub struct Slope<'a>(pub &'a VariableChange, pub TokenVec<'a>);
 
 impl Token for Slope<'_> {}
 
 #[derive(new)]
-#[cfg_attr(debug_assertions, derive(Debug))]
+#[cfg_attr(any(debug_assertions, test), derive(Debug))]
 pub struct Expression {
     pub(crate) instruction: Instruction,
     pub(crate) slab: Slab,
@@ -66,6 +92,13 @@ impl Clone for Expression {
     }
 }
 
+#[cfg(test)]
+impl PartialEq for Expression {
+    fn eq(&self, other: &Self) -> bool {
+        format!("{self:?}") == format!("{other:?}")
+    }
+}
+
 impl FromStr for Expression {
     type Err = fasteval::Error;
     fn from_str(s: &str) -> Result<Self, Self::Err> {
@@ -78,6 +111,7 @@ impl FromStr for Expression {
     }
 }
 
+#[cfg_attr(test, derive(Debug, PartialEq))]
 pub struct Context {
     pub result: Vec<f64>,
     pub variables: HashMap<char, f64>,

src/parser.rs

@@ -21,7 +21,8 @@ use nom::{
 use nom_locate::LocatedSpan;
 
 use crate::compiler::{
-    Expression, Loop, LoopCount, Marker, Note, Silence, Slope, Token, Tuplet, VariableChange,
+    Expression, Loop, LoopCount, Marker, Note, Silence, Slope, Token, TokenVec, Tuplet,
+    VariableChange,
 };
 
 #[derive(Builder)]
@@ -33,9 +34,7 @@ pub struct Parser<'i, 'n, 's, 'v> {
 }
 
 impl<'i, 's> Parser<'i, '_, 's, '_> {
-    pub fn parse_all(
-        &self,
-    ) -> Result<Vec<Box<dyn Token + 's>>, Error<nom_locate::LocatedSpan<&'i str>>> {
+    pub fn parse_all(&self) -> Result<TokenVec<'s>, Error<nom_locate::LocatedSpan<&'i str>>> {
         token_parser(self)
             .parse_complete(LocatedSpan::new(self.input))
             .finish()
@@ -45,7 +44,7 @@ impl<'i, 's> Parser<'i, '_, 's, '_> {
 
 fn token_parser<'a, 's, I>(
     parser: &Parser<'_, '_, 's, '_>,
-) -> impl NomParser<I, Output = Vec<Box<dyn Token + 's>>, Error = nom::error::Error<I>>
+) -> impl NomParser<I, Output = TokenVec<'s>, Error = nom::error::Error<I>>
 where
     I: Input + AsRef<str> + for<'z> nom::Compare<&'z str>,
     <I as Input>::Item: AsChar,
@@ -70,6 +69,7 @@ where
         )),
         space_or_comment(),
     ))
+    .map(Into::into)
 }
 
 fn into_box<'a>(token: impl Token + 'a) -> Box<dyn Token + 'a> {
@@ -279,22 +279,26 @@ mod tests {
         }
     }
 
-    // #[test]
-    // fn silence() {
-    //     let parser = |input: &'static str| Silence::parser().parse(input.into());
-    //     let mut working_cases = vec![(".", ()), ".dd", ".."];
-    //     let mut not_working_cases = vec![];
-    //     for (test, expected) in working_cases.drain(..) {
-    //         let output = parser(test);
-    //         if let Ok((result)) = output {
-    //             assert_eq!(expected, result);
-    //         } else {
-    //             panic!("result was not Ok: {output:?}");
-    //         }
-    //     }
-    //     for test in not_working_cases.drain(..) {
-    //         let output = parser(test);
-    //         assert!(output.is_err(), "result was not Err: {output:?}");
-    //     }
-    // }
+    #[test]
+    fn silence() {
+        let parser = |input| Silence::parser().parse(input);
+        let mut working_cases = vec![
+            (".", ("", Silence)),
+            (".dd", ("dd", Silence)),
+            ("..", (".", Silence)),
+        ];
+        let mut not_working_cases = vec!["", ",", "d.", " "];
+        for (test, expected) in working_cases.drain(..) {
+            let output = parser(test);
+            if let Ok(result) = output {
+                assert_eq!(expected, result);
+            } else {
+                panic!("result was not Ok: {output:?}");
+            }
+        }
+        for test in not_working_cases.drain(..) {
+            let output = parser(test);
+            assert!(output.is_err(), "result was not Err: {output:?}");
+        }
+    }
 }