tests: unflake tests by not starting i3bar

testcases/t/264-dock-criteria.t

@@ -19,6 +19,11 @@
 use i3test i3_config => <<EOT;
 # i3 config file (v4)
 for_window [class="dock"] move workspace current
+
+bar {
+    # Disable i3bar, which is also a dock client.
+    i3bar_command :
+}
 EOT
 
 my $ws = fresh_workspace();

testcases/t/504-move-workspace-to-output.t

@@ -22,6 +22,11 @@ use i3test i3_config => <<EOT;
 font -misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1
 
 fake-outputs 1024x768+0+0,1024x768+1024+0
+
+bar {
+    # Disable i3bar.
+    i3bar_command :
+}
 EOT
 
 # TODO: get rid of smartmatch in this test

testcases/t/526-reconfigure-dock.t

@@ -21,6 +21,11 @@ use i3test i3_config => <<EOT;
 font -misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1
 
 fake-outputs 1024x768+0+0,1024x768+1024+0
+
+bar {
+    # Disable i3bar, which is also a dock client.
+    i3bar_command :
+}
 EOT
 
 my ($window, $rect);