Subject: Documented what listbox-3.18b intends to test.

From: fvogel <[email-masked]>
Date: Mon, 18 Jan 2016 10:19:24 +0000

---
 tests/listbox.test | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/listbox.test b/tests/listbox.test
index 812d1c2..76a4349 100644
--- a/tests/listbox.test
+++ b/tests/listbox.test
@@ -485,6 +485,10 @@ test listbox-3.18b {ListboxWidgetCmd procedure, "bbox" option, justified, non-de
     destroy .top.l .top
     unset -nocomplain lres res
 } -body {
+    # This test checks whether all "x" values from bbox for different size
+    # items with different justification settings are all positive or zero
+    # This checks a bit the calculation of this x value with non-default
+    # borders widths of the listbox
     toplevel .top
     listbox .top.l -justify left -borderwidth 17 -highlightthickness 19 -selectborderwidth 22
     .top.l insert end Item1 LongerItem2 MuchLongerItem3
-- 
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