add unit test for wrapping

test/library/helpdb.lua

@@ -398,8 +398,25 @@ function test.get_entry_short_help()
 end
 
 function test.get_entry_long_help()
+    local expected = [[
+basic
+*****
+
+**Tags:** map
+
+**Command:**
+"basic"
+
+Documented
+basic.
+
+Documented
+full help.
+    ]]
+    expect.eq(expected, h.get_entry_long_help('basic', 13))
+
     -- long help for plugins/commands that have doc files should match the
-    -- contents of those files exactly
+    -- contents of those files exactly (test data is already wrapped)
     expect.eq(files['hack/docs/docs/tools/hascommands.txt'],
         h.get_entry_long_help('hascommands'))
     expect.eq(files['hack/docs/docs/tools/hascommands.txt'],