tests/qapi-schema: Cover alternate documentation comments

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20191024110237.30963-4-armbru@redhat.com>

tests/qapi-schema/doc-good.json

@@ -98,6 +98,14 @@
 { 'union': 'SugaredUnion',
   'data': { 'one': 'Variant1', 'two': { 'type': 'Variant2', 'if': 'IFTWO' } } }
 
+##
+# @Alternate:
+# @i: an integer
+# @b is undocumented
+##
+{ 'alternate': 'Alternate',
+  'data': { 'i': 'int', 'b': 'bool' } }
+
 ##
 # == Another subsection
 ##

tests/qapi-schema/doc-good.out

@@ -42,6 +42,10 @@ object SugaredUnion
     case one: q_obj_Variant1-wrapper
     case two: q_obj_Variant2-wrapper
         if ['IFTWO']
+alternate Alternate
+    tag type
+    case i: int
+    case b: bool
 object q_obj_cmd-arg
     member arg1: int optional=False
     member arg2: str optional=True
@@ -133,6 +137,14 @@ doc symbol=SugaredUnion
 
     arg=type
 
+doc symbol=Alternate
+    body=
+
+    arg=i
+an integer
+@b is undocumented
+    arg=b
+
 doc freeform
     body=
 == Another subsection

tests/qapi-schema/doc-good.texi

@@ -170,6 +170,23 @@ One of @t{"one"}, @t{"two"}
 @end deftp
 
 
+
+@deftp {Alternate} Alternate
+
+
+
+@b{Members:}
+@table @asis
+@item @code{i: int}
+an integer
+@code{b} is undocumented
+@item @code{b: boolean}
+Not documented
+@end table
+
+@end deftp
+
+
 @subsection Another subsection