patch 8.1.1626: no test for closing a popup window with a modified buffer

Problem:    No test for closing a popup window with a modified buffer.
Solution:   Add a test.  Add "popups" to getbufinfo().

runtime/doc/eval.txt

@@ -3140,7 +3140,11 @@ bufadd({name})						*bufadd()*
 		number.  Otherwise return the buffer number of the newly
 		created buffer.  When {name} is an empty string then a new
 		buffer is always created.
-		The buffer will not have' 'buflisted' set.
+		The buffer will not have' 'buflisted' set and not be loaded
+		yet.  To add some text to the buffer use this: >
+			let bufnr = bufadd('someName')
+			call bufload(bufnr)
+			call setbufline(bufnr, 1, ['some', 'text'])
 
 bufexists({expr})					*bufexists()*
 		The result is a Number, which is |TRUE| if a buffer called
@@ -4744,6 +4748,8 @@ getbufinfo([{dict}])
 					buffer-local variables.
 			windows		list of |window-ID|s that display this
 					buffer
+			popups		list of popup |window-ID|s that
+					display this buffer
 
 		Examples: >
 			for buf in getbufinfo()

src/evalfunc.c

@@ -4509,10 +4509,10 @@ get_buffer_info(buf_T *buf)
     dict_add_number(dict, "hidden",
 			    buf->b_ml.ml_mfp != NULL && buf->b_nwindows == 0);
 
-    /* Get a reference to buffer variables */
+    // Get a reference to buffer variables
     dict_add_dict(dict, "variables", buf->b_vars);
 
-    /* List of windows displaying this buffer */
+    // List of windows displaying this buffer
     windows = list_alloc();
     if (windows != NULL)
     {
@@ -4522,6 +4522,23 @@ get_buffer_info(buf_T *buf)
 	dict_add_list(dict, "windows", windows);
     }
 
+#ifdef FEAT_TEXT_PROP
+    // List of popup windows displaying this buffer
+    windows = list_alloc();
+    if (windows != NULL)
+    {
+	for (wp = first_popupwin; wp != NULL; wp = wp->w_next)
+	    if (wp->w_buffer == buf)
+		list_append_number(windows, (varnumber_T)wp->w_id);
+	FOR_ALL_TABPAGES(tp)
+	    for (wp = tp->tp_first_popupwin; wp != NULL; wp = wp->w_next)
+		if (wp->w_buffer == buf)
+		    list_append_number(windows, (varnumber_T)wp->w_id);
+
+	dict_add_list(dict, "popups", windows);
+    }
+#endif
+
 #ifdef FEAT_SIGNS
     if (buf->b_signlist != NULL)
     {
@@ -5685,7 +5702,7 @@ get_tabpage_info(tabpage_T *tp, int tp_idx)
     if (l != NULL)
     {
 	for (wp = (tp == curtab) ? firstwin : tp->tp_firstwin;
-		wp; wp = wp->w_next)
+						   wp != NULL; wp = wp->w_next)
 	    list_append_number(l, (varnumber_T)wp->w_id);
 	dict_add_list(dict, "windows", l);
     }

src/testdir/test_popupwin.vim

@@ -1710,3 +1710,30 @@ func Test_popupwin_width()
   endfor
   call popup_clear()
 endfunc
+
+func Test_popupwin_buf_close()
+  let buf = bufadd('Xtestbuf')
+  call bufload(buf)
+  call setbufline(buf, 1, ['just', 'some', 'lines'])
+  let winid = popup_create(buf, {})
+  redraw
+  call assert_equal(3, popup_getpos(winid).height)
+  let bufinfo = getbufinfo(buf)[0]
+  call assert_equal(1, bufinfo.changed)
+  call assert_equal(0, bufinfo.hidden)
+  call assert_equal(0, bufinfo.listed)
+  call assert_equal(1, bufinfo.loaded)
+  call assert_equal([], bufinfo.windows)
+  call assert_equal([winid], bufinfo.popups)
+
+  call popup_close(winid)
+  call assert_equal({}, popup_getpos(winid))
+  let bufinfo = getbufinfo(buf)[0]
+  call assert_equal(1, bufinfo.changed)
+  call assert_equal(1, bufinfo.hidden)
+  call assert_equal(0, bufinfo.listed)
+  call assert_equal(1, bufinfo.loaded)
+  call assert_equal([], bufinfo.windows)
+  call assert_equal([], bufinfo.popups)
+  exe 'bwipe! ' .. buf
+endfunc

src/version.c

@@ -777,6 +777,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1626,
 /**/
     1625,
 /**/