Add an --action option to select what to do

And add a reports_index option, in addition to the run_tests default
action.

README

@@ -66,6 +66,10 @@ The <tbb-file> can be:
 Available options
 -----------------
 
+--action=<name>
+        Select the action to be done. The default is to run the tests.
+        See the section about actions for details.
+
 --config=<file>
         Select a configuration file. See the section about Configuration
         Files below.
@@ -135,3 +139,17 @@ return a hash containing the configuration. The options set by the
 default configuration and command line arguments are available to this
 script in the $option hash reference.
 
+
+Selecting action
+----------------
+
+The --action option can be used to select the action to be done. The
+following actions are available:
+
+  run_tests::
+        Run the tests, make a report, and update the reports index page.
+        This is the default action.
+
+  reports_index::
+        Create an index page listing the tests reports.
+

TBBTestSuite/Options.pm

@@ -16,6 +16,7 @@ BEGIN {
 }
 
 my %default_options = (
+    action   => 'run_tests',
     os       => 'Linux',
     arch     => 'x86_64',
     mozmill  => 1,
@@ -35,7 +36,8 @@ my %default_options = (
 sub get_options {
     my @options = qw(mozmill! selenium! starttor! tor-control-port=i
                      tor-socks-port=i reports-dir=s gpgcheck! keyring=s
-                     virtualenv=s xvfb! name=s download-dir=s config=s);
+                     virtualenv=s xvfb! name=s download-dir=s config=s
+                     action=s);
     my (%cli, %config);
     Getopt::Long::GetOptionsFromArray(\@_, \%cli, @options) || exit 1;
     $cli{args} = \@_ if @_;

tbb-testsuite

@@ -23,4 +23,10 @@ sub run_tests {
     TBBTestSuite::Reports::make_reports_index;
 }
 
-run_tests;
+my %actions = (
+    run_tests => \&run_tests,
+    reports_index => \&TBBTestSuite::Reports::make_reports_index,
+);
+
+exit_error "Unknow action $options->{action}" unless $actions{$options->{action}};
+$actions{$options->{action}}->();