feat: Add new system for multi-selections.

crates/pikl-test-macros/src/parse.rs

@@ -31,6 +31,7 @@ pub struct Fixtures {
     pub items: Option<Vec<String>>,
     pub label_key: Option<String>,
     pub viewport: Option<(usize, usize)>, // (height, count)
+    pub multi: Option<bool>,
 }
 
 pub struct TestCase {
@@ -44,6 +45,7 @@ pub struct TestCase {
     pub cursor: Option<usize>,
     pub offset: Option<usize>,
     pub selected: Option<String>,
+    pub selected_items: Option<Vec<String>>,
     pub cancelled: bool,
 }
 
@@ -89,6 +91,7 @@ impl Parse for TestModule {
             items: None,
             label_key: None,
             viewport: None,
+            multi: None,
         };
         let mut tests = Vec::new();
 
@@ -120,11 +123,18 @@ impl Parse for TestModule {
                     fixtures.viewport = Some(parse_viewport_def(&content)?);
                     eat_semi(&content);
                 }
+                "multi" => {
+                    consume_ident_or_keyword(&content)?;
+                    content.parse::<Token![:]>()?;
+                    let val: syn::LitBool = content.parse()?;
+                    fixtures.multi = Some(val.value);
+                    eat_semi(&content);
+                }
                 _ => {
                     return Err(syn::Error::new(
                         content.span(),
                         format!(
-                            "unexpected field '{ident_str}', expected test, items, label_key, or viewport"
+                            "unexpected field '{ident_str}', expected test, items, label_key, viewport, or multi"
                         ),
                     ));
                 }
@@ -163,6 +173,7 @@ fn parse_test_case(input: ParseStream) -> syn::Result<TestCase> {
         cursor: None,
         offset: None,
         selected: None,
+        selected_items: None,
         cancelled: false,
     };
 
@@ -224,6 +235,10 @@ fn parse_test_case(input: ParseStream) -> syn::Result<TestCase> {
                 let val: LitStr = content.parse()?;
                 case.selected = Some(val.value());
             }
+            "selected_items" => {
+                content.parse::<Token![:]>()?;
+                case.selected_items = Some(parse_string_list(&content)?);
+            }
             "cancelled" => {
                 // Just the keyword presence means true. Optionally parse `: true`.
                 if content.peek(Token![:]) {