Add error cases for [font] 🧯

2 files changed, 15 insertions, 4 deletions

diff --git a/src/library/style.rs b/src/library/style.rs
index 0cc40f94..43380249 100644
--- a/src/library/style.rs
+++ b/src/library/style.rs
@@ -105,9 +105,9 @@ pub fn font(mut args: Args, ctx: &mut EvalContext) -> Value {
         ctx.state.font.variant.stretch = stretch;
     }
 
-    struct FontList(Vec<String>);
+    struct FamilyList(Vec<String>);
 
-    try_from_match!(FontList["font or list of fonts"] @ span:
+    try_from_match!(FamilyList["family or list of families"] @ span:
         Value::Str(v) => Self(vec![v.to_lowercase()]),
         Value::Dict(v) => Self(Args(v.span_with(span))
             .find_all::<StringLike>()
@@ -117,7 +117,7 @@ pub fn font(mut args: Args, ctx: &mut EvalContext) -> Value {
     );
 
     for &class in &["serif", "sans-serif", "monospace", "emoji", "math"] {
-        if let Some(list) = args.get::<_, FontList>(ctx, class) {
+        if let Some(list) = args.get::<_, FamilyList>(ctx, class) {
             Rc::make_mut(&mut ctx.state.font.families)
                 .update_class_list(class.to_string(), list.0);
             needs_flattening = true;
diff --git a/tests/typ/func-font-error.typ b/tests/typ/func-font-error.typ
index 34ff5837..8de754ae 100644
--- a/tests/typ/func-font-error.typ
+++ b/tests/typ/func-font-error.typ
@@ -1,6 +1,17 @@
 // Test error cases of the `font` function.
 
+// Not one of the valid things for positional arguments.
+[font: false]
+
+// Wrong types.
+[font: style=bold, weight="thin", emoji=0]
+
+// Non-existing argument.
 [font: something="invalid"]
 
 // compare-ref: false
-// error: 3:8-3:27 unexpected argument
+// error: 4:8-4:13 unexpected argument
+// error: 7:14-7:18 invalid font style
+// error: 7:27-7:33 expected font weight, found string
+// error: 7:41-7:42 expected family or list of families, found integer
+// error: 10:8-10:27 unexpected argument