directive: does not type check; add test for parsing builtin directives

src/directive.rs

@@ -3,6 +3,7 @@ use std::collections::BTreeMap;
 use snafu::{ResultExt, Snafu};
 
 /// The types and directives in a VijiN project.
+#[derive(Debug, PartialEq, Eq)]
 pub struct TypeSystem {
     pub types: BTreeMap<String, Type>,
     pub directives: BTreeMap<String, Directive>,
@@ -11,6 +12,7 @@ pub struct TypeSystem {
 /// The definition of a standard directive.
 ///
 /// Note that this type is an input to the parser, not an output.
+#[derive(Debug, PartialEq, Eq)]
 pub struct Directive {
     /// The provider's name for the directive.
     name: String,
@@ -37,6 +39,7 @@ pub struct Directive {
 }
 
 /// Directive parameter.
+#[derive(Debug, PartialEq, Eq)]
 pub struct Param {
     /// Name to which the compiler maps the argument.
     name: String,
@@ -49,7 +52,7 @@ pub struct Param {
 }
 
 /// Types expected by directive arguments.
-#[derive(Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub enum Type {
     /// Arbitrary text.
     Text,
@@ -264,4 +267,38 @@ impl TypeSystem {
 mod tests {
     use super::*;
     use rstest::rstest;
+
+    #[rstest]
+    fn builtin() {
+        let mut s = TypeSystem {
+            types: BTreeMap::new(),
+            directives: BTreeMap::new(),
+        };
+        s.parse(DIRECTIVE_PREDECLARED).unwrap();
+        let expected = TypeSystem{
+            types: BTreeMap::from([
+                ("text", Type::Text),
+                ("speech", Type::Speech),
+                ("character", Type::Character),
+                ("duration", Type::Duration),
+                ("scene", Type::Asset { tags: ["scene"] }),
+                ("background", Type::Asset { tags: ["background"] }),
+                ("stage position", Type::Enum(["close", "left third", "right third", "left", "center", "right", "far left", "mid left", "mid right", "far right", "far"])),
+            ].map(|(k, v)| (k.into(), v))),
+            directives: BTreeMap::from([
+                ("page", Directive {
+                    name: "page".into(),
+                    doc: "Start showing the current static speaker, text, &c.\nNormally not used directly; script speech lines call this directive implicitly.".into(),
+                    prefix: "page".into(),
+                    prefix_param: None,
+                    infix: None,
+                    infix_param: None,
+                    suffix: None,
+                    suffix_param: None,
+                    list_param: None,
+                }),
+            ].map(|(k, v)| (k.into(), v))),
+        };
+        assert_eq!(s, expected);
+    }
 }