tests: implement restart testing (actual option still missing)

Author: stapelberg

testcases/lib/SocketActivation.pm

@@ -92,6 +92,10 @@ sub activate_i3 {
         my $outdir = $args{outdir};
         my $test = $args{testname};
 
+        if ($args{restart}) {
+            $i3cmd .= ' -L ' . abs_path('restart-state.golden');
+        }
+
         if ($args{valgrind}) {
             $i3cmd =
                 qq|valgrind -v --log-file="$outdir/valgrind-for-$test.log" | .

testcases/lib/TestWorker.pm

@@ -101,8 +101,8 @@ sub worker_wait {
             $test->failure_output(\*STDERR);
             $test->todo_output(\*STDOUT);
 
-            @ENV{qw(DISPLAY TESTNAME OUTDIR VALGRIND STRACE COVERAGE)}
-                = ($self->{display}, basename($file), $outdir, 0, 0, 0);
+            @ENV{qw(DISPLAY TESTNAME OUTDIR VALGRIND STRACE COVERAGE RESTART)}
+                = ($self->{display}, basename($file), $outdir, 0, 0, 0, 0);
 
             package main;
             local $@;

testcases/lib/i3test.pm

@@ -505,6 +505,7 @@ sub launch_with_config {
         testname => $ENV{TESTNAME},
         valgrind => $ENV{VALGRIND},
         strace => $ENV{STRACE},
+        restart => $ENV{RESTART},
         cv => $cv,
     );
 

testcases/restart-state.golden

@@ -0,0 +1 @@
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