more decorator tests

tests/suite/syntax/decorator.typ

@@ -1,6 +1,11 @@
 // Test decorators.
 
---- decorator ---
+--- decorators ---
+
+/! allow()
+/! allow("A")
+/! allow(5)
+/! allow("the")
 
 /! allow("unnecessary-stars")
 #[*a*]
@@ -14,3 +19,56 @@ $
   /! allow("unnecessary-stars")
   #[*a*]
 $
+
+--- unknown-decorator ---
+/! whatever()
+
+--- invalid-decorator ---
+// Error: 1-13 the character * is not valid in a decorator
+/! invalid(*)
+
+--- allow-suppresses-warns ---
+
+/! allow("unnecessary-stars")
+#[**]
+
+/! allow("unnecessary-stars")
+#{
+  {
+    [**]
+  }
+}
+
+/**/ /! allow("unnecessary-stars")
+#[**]
+
+/! allow("unnecessary-stars")
+**
+
+--- allow-before-parbreak-doesnt-suppress-warn ---
+// Warning: 3:3-3:5 no text within stars
+// Hint: 3:3-3:5 using multiple consecutive stars (e.g. **) has no additional effect
+/! allow("unnecessary-stars")
+
+#[**]
+
+--- allow-before-empty-code-line-doesnt-suppress-warn ---
+// Warning: 4:4-4:6 no text within stars
+// Hint: 4:4-4:6 using multiple consecutive stars (e.g. **) has no additional effect
+#{
+  /! allow("unnecessary-stars")
+
+  [**]
+}
+
+--- unattached-allow-doesnt-suppress-warn ---
+
+// Warning: 1-3 no text within stars
+// Hint: 1-3 using multiple consecutive stars (e.g. **) has no additional effect
+**
+
+/! allow("unnecessary-stars")
+b
+// Warning: 3-5 no text within stars
+// Hint: 3-5 using multiple consecutive stars (e.g. **) has no additional effect
+#[**]