diff tests/test-help.t @ 37342:4e6a6d0dccee

tests: conditionalize tests based on presence of custom extensions

The test harness supports injecting extensions via --extra-config-opt.
However, if you do this, various tests that print state about loaded
extensions fail.

This commit teaches the test harness to recognize when custom
extensions are loaded so that tests can use feature sniffing to
conditionalize tests based on that.

Differential Revision: https://phab.mercurial-scm.org/D3039

--- a/tests/test-help.t	Wed Apr 04 12:16:50 2018 -0700
+++ b/tests/test-help.t	Wed Apr 04 13:21:34 2018 -0700
@@ -44,6 +44,10 @@
    summary       summarize working directory state
    update        update working directory (or switch revisions)
 
+Extra extensions will be printed in help output in a non-reliable order since
+the extension is unknown.
+#if no-extraextensions
+
   $ hg help
   Mercurial Distributed SCM
   
@@ -283,6 +287,8 @@
        win32mbcs     allow the use of MBCS paths with problematic encodings
        zeroconf      discover and advertise repositories on the local network
 
+#endif
+
 Verify that deprecated extensions are included if --verbose:
 
   $ hg -v help extensions | grep children
@@ -816,6 +822,8 @@
 
 Test that default list of commands omits extension commands
 
+#if no-extraextensions
+
   $ hg help
   Mercurial Distributed SCM
   
@@ -903,6 +911,7 @@
   
   (use 'hg help -v' to show built-in aliases and global options)
 
+#endif
 
 Test list of internal help commands