Add tests for flags passed to f_vrfy
The tests cover chains of length 0, 1 and 2, with one error, located at any of
the available levels in the chain. This exercises all three call sites of
f_vrfy (two in verify_top, one in verify_child). Chains of greater length
would not cover any new code path or behaviour that I can see.
diff --git a/tests/data_files/server5-ss-expired.crt b/tests/data_files/server5-ss-expired.crt
new file mode 100644
index 0000000..287ce98
--- /dev/null
+++ b/tests/data_files/server5-ss-expired.crt
@@ -0,0 +1,12 @@
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