tests: introduce c-style conditional sections in .t tests This makes it possible to have conditional sections like: #if windows $ echo foo foo #else $ echo bar bar #endif The directives and skipped sections are treated like comments, so don't interleave them with commands and their output. The parameters to #if are evaluated while preparing the test by passing them over to hghave. Requirements can thus be negated with 'no-' prefix, and multiple requirements must all be true to return true.

--- a/tests/test-run-tests.t	Wed May 30 14:28:57 2012 +0200
+++ b/tests/test-run-tests.t	Fri Jun 01 02:25:12 2012 +0200
@@ -52,6 +52,15 @@
   $ echo 'foo (re)'
   foo (re)
 
+Conditional sections based on hghave:
+
+#if fifo no-fifo
+  $ echo skipped
+#else
+  $ echo tested
+  tested
+#endif
+
 Exit code:
 
   $ (exit 1)