internal/system: optional op check parallelism

The PipeWire Op check cannot be made parallel due to the OS interaction.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/system/acl_test.go

@@ -13,7 +13,7 @@ import (
 func TestACLUpdateOp(t *testing.T) {
 	t.Parallel()
 
-	checkOpBehaviour(t, []opBehaviourTestCase{
+	checkOpBehaviour(t, 0, []opBehaviourTestCase{
 		{"apply aclUpdate", 0xbeef, 0xff,
 			&aclUpdateOp{Process, "/proc/nonexistent", []acl.Perm{acl.Read, acl.Write, acl.Execute}}, []stub.Call{
 				call("verbose", stub.ExpectArgs{[]any{"applying ACL", &aclUpdateOp{Process, "/proc/nonexistent", []acl.Perm{acl.Read, acl.Write, acl.Execute}}}}, nil, nil),

internal/system/dbus_test.go

@@ -18,7 +18,7 @@ import (
 func TestDBusProxyOp(t *testing.T) {
 	t.Parallel()
 
-	checkOpBehaviour(t, []opBehaviourTestCase{
+	checkOpBehaviour(t, 0, []opBehaviourTestCase{
 		{"dbusProxyStart", 0xdead, 0xff, &dbusProxyOp{
 			final:  dbusNewFinalSample(4),
 			out:    new(linePrefixWriter), // panics on write

internal/system/dispatcher_test.go

@@ -36,17 +36,26 @@ type opBehaviourTestCase struct {
 	wantErrRevert error
 }
 
-func checkOpBehaviour(t *testing.T, testCases []opBehaviourTestCase) {
+const (
+	// checkNoParallel causes checkOpBehaviour to skip setting tests as parallel.
+	checkNoParallel = 1 << iota
+)
+
+func checkOpBehaviour(t *testing.T, flags int, testCases []opBehaviourTestCase) {
 	t.Helper()
 
 	t.Run("behaviour", func(t *testing.T) {
 		t.Helper()
-		t.Parallel()
+		if flags&checkNoParallel == 0 {
+			t.Parallel()
+		}
 
 		for _, tc := range testCases {
 			t.Run(tc.name, func(t *testing.T) {
 				t.Helper()
-				t.Parallel()
+				if flags&checkNoParallel == 0 {
+					t.Parallel()
+				}
 
 				var ec *Criteria
 				if tc.ec != 0xff {

internal/system/link_test.go

@@ -10,7 +10,7 @@ import (
 func TestHardlinkOp(t *testing.T) {
 	t.Parallel()
 
-	checkOpBehaviour(t, []opBehaviourTestCase{
+	checkOpBehaviour(t, 0, []opBehaviourTestCase{
 		{"link", 0xbeef, 0xff, &hardlinkOp{hst.EPulse, "/run/user/1000/hakurei/9663730666a44cfc2a81610379e02ed6/pulse", "/run/user/1000/pulse/native"}, []stub.Call{
 			call("verbose", stub.ExpectArgs{[]any{"linking", &hardlinkOp{hst.EPulse, "/run/user/1000/hakurei/9663730666a44cfc2a81610379e02ed6/pulse", "/run/user/1000/pulse/native"}}}, nil, nil),
 			call("link", stub.ExpectArgs{"/run/user/1000/pulse/native", "/run/user/1000/hakurei/9663730666a44cfc2a81610379e02ed6/pulse"}, nil, stub.UniqueError(1)),

internal/system/mkdir_test.go

@@ -10,7 +10,7 @@ import (
 func TestMkdirOp(t *testing.T) {
 	t.Parallel()
 
-	checkOpBehaviour(t, []opBehaviourTestCase{
+	checkOpBehaviour(t, 0, []opBehaviourTestCase{
 		{"mkdir", 0xbeef, 0xff, &mkdirOp{User, "/tmp/hakurei.0/f2f3bcd492d0266438fa9bf164fe90d9", 0711, false}, []stub.Call{
 			call("verbose", stub.ExpectArgs{[]any{"ensuring directory", &mkdirOp{User, "/tmp/hakurei.0/f2f3bcd492d0266438fa9bf164fe90d9", 0711, false}}}, nil, nil),
 			call("mkdir", stub.ExpectArgs{"/tmp/hakurei.0/f2f3bcd492d0266438fa9bf164fe90d9", os.FileMode(0711)}, nil, stub.UniqueError(2)),

internal/system/wayland_test.go

@@ -11,7 +11,7 @@ import (
 func TestWaylandOp(t *testing.T) {
 	t.Parallel()
 
-	checkOpBehaviour(t, []opBehaviourTestCase{
+	checkOpBehaviour(t, 0, []opBehaviourTestCase{
 		{"chmod", 0xbeef, 0xff, &waylandOp{nil,
 			m("/tmp/hakurei.1971/ebf083d1b175911782d413369b64ce7c/wayland"),
 			m("/run/user/1971/wayland-0"),

internal/system/xhost_test.go

@@ -11,7 +11,7 @@ import (
 func TestXHostOp(t *testing.T) {
 	t.Parallel()
 
-	checkOpBehaviour(t, []opBehaviourTestCase{
+	checkOpBehaviour(t, 0, []opBehaviourTestCase{
 		{"xcbChangeHosts revert", 0xbeef, hst.EX11, xhostOp("chronos"), []stub.Call{
 			call("verbosef", stub.ExpectArgs{"inserting entry %s to X11", []any{xhostOp("chronos")}}, nil, nil),
 			call("xcbChangeHosts", stub.ExpectArgs{xcb.HostMode(xcb.HostModeInsert), xcb.Family(xcb.FamilyServerInterpreted), "localuser\x00chronos"}, nil, stub.UniqueError(1)),