Fix citation suppresses title when no author provided (#144)

src/csl/rendering/mod.rs

@@ -774,16 +774,17 @@ fn choose_children<F, R, T: EntryLike>(
 where
     F: FnMut(&[LayoutRenderingElement], &mut Context<T>) -> R,
 {
-    for branch in choose.branches() {
-        if branch.match_.test(BranchConditionIter::from_branch(branch, ctx)) {
-            return Some(f(&branch.children, ctx));
-        }
-    }
-
-    choose
-        .otherwise
-        .as_ref()
-        .map(|fallthrough| f(&fallthrough.children, ctx))
+    let supressed = ctx.writing.suppress_queried_variables;
+    ctx.writing.stop_suppressing_queried_variables();
+    let branch = choose
+        .branches()
+        .find(|branch| branch.match_.test(BranchConditionIter::from_branch(branch, ctx)));
+    ctx.writing.suppress_queried_variables = supressed;
+
+    branch
+        .map(|b| b.children.as_slice())
+        .or_else(|| choose.otherwise.as_ref().map(|f| f.children.as_slice()))
+        .map(|children| f(children, ctx))
 }
 
 impl RenderCsl for citationberg::Choose {

tests/citeproc.rs

@@ -746,3 +746,52 @@ fn access_date() {
         .unwrap();
     assert_eq!(buf, "Retrieved 2021, from https://example.com/");
 }
+
+#[test]
+fn no_author() {
+    let style = ArchivedStyle::by_name("apa").unwrap().get();
+    let locales = locales();
+    let Style::Independent(style) = style else {
+        panic!("test has dependent style");
+    };
+
+    let lib = from_biblatex_str(
+        r#"
+        @misc{test,
+          title = {Definition and objectives of systems development},
+          url = {https://www.opentextbooks.org.hk/ditatopic/25323},
+          language = {en},
+          urldate = {2023-11-24},
+          journal = {Open Textbooks for Hong Kong},
+          date = {2016-01-19},
+        }
+      }"#,
+    )
+    .unwrap();
+    let entry = lib.get("test").unwrap();
+
+    let mut driver: BibliographyDriver<'_, Entry> = BibliographyDriver::new();
+    driver.citation(CitationRequest::new(
+        vec![CitationItem::new(entry, None, None, false, None)],
+        &style,
+        None,
+        &locales,
+        Some(1),
+    ));
+
+    let rendered = driver.finish(BibliographyRequest::new(&style, None, &locales));
+    let mut buf = String::new();
+    rendered.bibliography.unwrap().items[0]
+        .content
+        .write_buf(&mut buf, hayagriva::BufWriteFormat::Plain)
+        .unwrap();
+
+    assert_eq!(buf, "Definition and objectives of systems development. (2016, January 19). https://www.opentextbooks.org.hk/ditatopic/25323");
+
+    let mut buf = String::new();
+    rendered.citations[0]
+        .citation
+        .write_buf(&mut buf, hayagriva::BufWriteFormat::Plain)
+        .unwrap();
+    assert_eq!(buf, "(Definition and Objectives of Systems Development, 2016)");
+}