CI: parallize unit tests

.cirrus.yml

@@ -154,6 +154,8 @@ cross_build_task:
 
 unit_task:
     name: 'Unit tests w/ $STORAGE_DRIVER'
+    gce_instance:
+      cpu: 4
     alias: unit
     skip: &not_build_docs >-
         $CIRRUS_CHANGE_TITLE =~ '.*CI:DOCS.*' ||

Makefile

@@ -22,9 +22,10 @@ STRIP ?= strip
 GO := go
 GO_LDFLAGS := $(shell if $(GO) version|grep -q gccgo; then echo "-gccgoflags"; else echo "-ldflags"; fi)
 GO_GCFLAGS := $(shell if $(GO) version|grep -q gccgo; then echo "-gccgoflags"; else echo "-gcflags"; fi)
+NPROCS := $(shell nproc)
 export GO_BUILD=$(GO) build
-export GO_TEST=$(GO) test
-RACEFLAGS := $(shell $(GO_TEST) -race ./pkg/dummy > /dev/null 2>&1 && echo -race)
+export GO_TEST=$(GO) test -parallel=$(NPROCS)
+RACEFLAGS ?= $(shell $(GO_TEST) -race ./pkg/dummy > /dev/null 2>&1 && echo -race)
 
 COMMIT_NO ?= $(shell git rev-parse HEAD 2> /dev/null || true)
 GIT_COMMIT ?= $(if $(shell git status --porcelain --untracked-files=no),${COMMIT_NO}-dirty,${COMMIT_NO})

buildah_test.go

@@ -40,6 +40,12 @@ func TestMain(m *testing.M) {
 }
 
 func TestOpenBuilderCommonBuildOpts(t *testing.T) {
+	// This test cannot be parallized as this uses NewBuilder()
+	// which eventually and indirectly accesses a global variable
+	// defined in `go-selinux`, this must be fixed at `go-selinux`
+	// or builder must enable sometime of locking mechanism i.e if
+	// routine is creating Builder other's must wait for it.
+	// Tracked here: https://github.com/containers/buildah/issues/5967
 	ctx := context.TODO()
 	store, err := storage.GetStore(types.StoreOptions{
 		RunRoot:         t.TempDir(),

chroot/run_test.go

@@ -123,13 +123,15 @@ func testMinimal(t *testing.T, modify func(g *generate.Generator, rootDir, bundl
 }
 
 func TestNoop(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
 	testMinimal(t, nil, nil)
 }
 
 func TestMinimalSkeleton(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -142,6 +144,7 @@ func TestMinimalSkeleton(t *testing.T) {
 }
 
 func TestProcessTerminal(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -160,6 +163,7 @@ func TestProcessTerminal(t *testing.T) {
 }
 
 func TestProcessConsoleSize(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -182,6 +186,7 @@ func TestProcessConsoleSize(t *testing.T) {
 }
 
 func TestProcessUser(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -205,6 +210,7 @@ func TestProcessUser(t *testing.T) {
 }
 
 func TestProcessEnv(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -226,6 +232,7 @@ func TestProcessEnv(t *testing.T) {
 }
 
 func TestProcessCwd(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -245,6 +252,7 @@ func TestProcessCwd(t *testing.T) {
 }
 
 func TestProcessCapabilities(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -289,6 +297,7 @@ func TestProcessCapabilities(t *testing.T) {
 }
 
 func TestProcessRlimits(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -327,6 +336,7 @@ func TestProcessRlimits(t *testing.T) {
 }
 
 func TestProcessNoNewPrivileges(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -348,6 +358,7 @@ func TestProcessNoNewPrivileges(t *testing.T) {
 }
 
 func TestProcessOOMScoreAdj(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -370,6 +381,7 @@ func TestProcessOOMScoreAdj(t *testing.T) {
 }
 
 func TestHostname(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -387,6 +399,7 @@ func TestHostname(t *testing.T) {
 }
 
 func TestMounts(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -547,6 +560,7 @@ func TestMounts(t *testing.T) {
 }
 
 func TestLinuxIDMapping(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}
@@ -584,6 +598,7 @@ func TestLinuxIDMapping(t *testing.T) {
 }
 
 func TestLinuxIDMappingShift(t *testing.T) {
+	t.Parallel()
 	if unix.Getuid() != 0 {
 		t.Skip("tests need to be run as root")
 	}

cmd/buildah/images_test.go

@@ -5,6 +5,7 @@ import (
 )
 
 func TestSizeFormatting(t *testing.T) {
+	t.Parallel()
 	size := formattedSize(0)
 	if size != "0 B" {
 		t.Errorf("Error formatting size: expected '%s' got '%s'", "0 B", size)
@@ -22,6 +23,7 @@ func TestSizeFormatting(t *testing.T) {
 }
 
 func TestMatchWithTag(t *testing.T) {
+	t.Parallel()
 	isMatch := matchesReference("gcr.io/pause:latest", "pause:latest")
 	if !isMatch {
 		t.Error("expected match, got not match")
@@ -34,6 +36,7 @@ func TestMatchWithTag(t *testing.T) {
 }
 
 func TestNoMatchesReferenceWithTag(t *testing.T) {
+	t.Parallel()
 	isMatch := matchesReference("gcr.io/pause:latest", "redis:latest")
 	if isMatch {
 		t.Error("expected no match, got match")
@@ -46,6 +49,7 @@ func TestNoMatchesReferenceWithTag(t *testing.T) {
 }
 
 func TestMatchesReferenceWithoutTag(t *testing.T) {
+	t.Parallel()
 	isMatch := matchesReference("gcr.io/pause:latest", "pause")
 	if !isMatch {
 		t.Error("expected match, got not match")
@@ -58,6 +62,7 @@ func TestMatchesReferenceWithoutTag(t *testing.T) {
 }
 
 func TestNoMatchesReferenceWithoutTag(t *testing.T) {
+	t.Parallel()
 	isMatch := matchesReference("gcr.io/pause:latest", "redis")
 	if isMatch {
 		t.Error("expected no match, got match")

commit_test.go

@@ -21,6 +21,12 @@ import (
 )
 
 func TestCommitLinkedLayers(t *testing.T) {
+	// This test cannot be parallized as this uses NewBuilder()
+	// which eventually and indirectly accesses a global variable
+	// defined in `go-selinux`, this must be fixed at `go-selinux`
+	// or builder must enable sometime of locking mechanism i.e if
+	// routine is creating Builder other's must wait for it.
+	// Tracked here: https://github.com/containers/buildah/issues/5967
 	ctx := context.TODO()
 	now := time.Now()
 

common_test.go

@@ -41,6 +41,7 @@ func (ts *testRetryCopyImageWrappedStore) CreateImage(id string, names []string,
 }
 
 func TestRetryCopyImage(t *testing.T) {
+	t.Parallel()
 	ctx := context.TODO()
 
 	graphDriverName := os.Getenv("STORAGE_DRIVER")

contrib/cirrus/test.sh

@@ -67,7 +67,13 @@ else
             showrun make validate
             ;;
         unit)
-            showrun make test-unit
+            race=
+            if [[ -z "$CIRRUS_PR" ]]; then
+               # If not running on a PR then run unit tests
+               # with appropriate `-race` flags.
+               race="-race"
+            fi
+            showrun make test-unit RACEFLAGS=$race
             ;;
         conformance)
             # Typically it's undesirable to install packages at runtime.

convertcw_test.go

@@ -66,6 +66,12 @@ func (d *dummyAttestationHandler) ServeHTTP(rw http.ResponseWriter, req *http.Re
 }
 
 func TestCWConvertImage(t *testing.T) {
+	// This test cannot be parallized as this uses NewBuilder()
+	// which eventually and indirectly accesses a global variable
+	// defined in `go-selinux`, this must be fixed at `go-selinux`
+	// or builder must enable sometime of locking mechanism i.e if
+	// routine is creating Builder other's must wait for it.
+	// Tracked here: https://github.com/containers/buildah/issues/5967
 	ctx := context.TODO()
 	for _, status := range []int{http.StatusOK, http.StatusInternalServerError} {
 		for _, ignoreChainRetrievalErrors := range []bool{false, true} {

copier/xattrs_test.go

@@ -17,6 +17,7 @@ func init() {
 }
 
 func TestXattrs(t *testing.T) {
+	t.Parallel()
 	if !xattrsSupported {
 		t.Skipf("xattrs are not supported on this platform, skipping")
 	}

define/pull_test.go

@@ -7,6 +7,7 @@ import (
 )
 
 func TestPullPolicy(t *testing.T) {
+	t.Parallel()
 	for name, val := range PolicyMap {
 		assert.Equal(t, name, val.String())
 	}

define/types_test.go

@@ -7,6 +7,7 @@ import (
 )
 
 func TestParseGitBuildContext(t *testing.T) {
+	t.Parallel()
 	// Tests with only repo
 	repo, subdir, branch := parseGitBuildContext("https://github.com/containers/repo.git")
 	assert.Equal(t, repo, "https://github.com/containers/repo.git")

digester_test.go

@@ -25,6 +25,7 @@ func (c *CompositeDigester) isOpen() bool {
 }
 
 func TestCompositeDigester(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name       string
 		itemTypes  []string
@@ -186,6 +187,7 @@ func TestCompositeDigester(t *testing.T) {
 }
 
 func TestTarFilterer(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name          string
 		input, output map[string]string

imagebuildah/stage_executor_test.go

@@ -11,6 +11,7 @@ import (
 )
 
 func TestHistoryEntriesEqual(t *testing.T) {
+	t.Parallel()
 	testCases := []struct {
 		a, b  string
 		equal bool

imagebuildah/util_test.go

@@ -12,6 +12,7 @@ import (
 )
 
 func TestGeneratePathChecksum(t *testing.T) {
+	t.Parallel()
 	tempDir := t.TempDir()
 
 	tempFile, err := os.CreateTemp(tempDir, "testfile")

internal/config/convert_test.go

@@ -148,6 +148,7 @@ func checkValue(t *testing.T, value reflect.Value, name string, kind reflect.Kin
 }
 
 func TestGoDockerclientConfigFromSchema2Config(t *testing.T) {
+	t.Parallel()
 	var input manifest.Schema2Config
 	fillAllFields(t, &input)
 	output := GoDockerclientConfigFromSchema2Config(&input)
@@ -157,6 +158,7 @@ func TestGoDockerclientConfigFromSchema2Config(t *testing.T) {
 }
 
 func TestSchema2ConfigFromGoDockerclientConfig(t *testing.T) {
+	t.Parallel()
 	var input dockerclient.Config
 	fillAllFields(t, &input)
 	output := Schema2ConfigFromGoDockerclientConfig(&input)

internal/mkcw/archive_test.go

@@ -20,6 +20,7 @@ import (
 )
 
 func TestSlop(t *testing.T) {
+	t.Parallel()
 	testCases := []struct {
 		input  int64
 		slop   string
@@ -84,6 +85,7 @@ func (d *dummyAttestationHandler) ServeHTTP(rw http.ResponseWriter, req *http.Re
 }
 
 func TestArchive(t *testing.T) {
+	t.Parallel()
 	ociConfig := &v1.Image{
 		Config: v1.ImageConfig{
 			User:       "root",

internal/mkcw/luks_test.go

@@ -11,6 +11,7 @@ import (
 )
 
 func TestCheckLUKSPassphrase(t *testing.T) {
+	t.Parallel()
 	passphrase, err := GenerateDiskEncryptionPassphrase()
 	require.NoError(t, err)
 	secondPassphrase, err := GenerateDiskEncryptionPassphrase()

internal/mkcw/workload_test.go

@@ -10,6 +10,7 @@ import (
 )
 
 func TestReadWriteWorkloadConfig(t *testing.T) {
+	t.Parallel()
 	// Create a temporary file to stand in for a disk image.
 	temp := filepath.Join(t.TempDir(), "disk.img")
 	f, err := os.OpenFile(temp, os.O_CREATE|os.O_RDWR, 0o600)

internal/open/open_linux_test.go

@@ -10,6 +10,7 @@ import (
 )
 
 func TestBindFdToPath(t *testing.T) {
+	t.Parallel()
 	first := t.TempDir()
 	sampleData := []byte("sample data")
 	err := os.WriteFile(filepath.Join(first, "testfile"), sampleData, 0o600)

internal/open/open_test.go

@@ -19,6 +19,7 @@ func TestMain(m *testing.M) {
 }
 
 func TestOpenInChroot(t *testing.T) {
+	t.Parallel()
 	tmpdir := t.TempDir()
 	firstContents := []byte{0, 1, 2, 3}
 	secondContents := []byte{4, 5, 6, 7}