Backport of template: run template tests on Windows where possible in…

…to release/1.6.x #19858

We don't run the whole suite of unit tests on all platforms to keep CI times
reasonable, so the only things we've been running on Windows are
platform-specific.

I'm working on some platform-specific `template` related work and having these
tests run on Windows will reduce the risk of regressions. Our Windows CI box
doesn't have Consul or Vault, so I've skipped those tests for the time being,
and can follow up with that later. There's also a test with assertions looking
for specific paths, and the results are different on Windows. I've skipped those
for the moment as well and will follow up under a separate PR.

Also swap `testify` for `shoenig/test`

Co-authored-by: Tim Gross <tgross@hashicorp.com>

.github/workflows/test-windows.yml

@@ -88,7 +88,8 @@ jobs:
             --junitfile results.xml \
             github.com/hashicorp/nomad/drivers/docker \
             github.com/hashicorp/nomad/client/lib/fifo \
-            github.com/hashicorp/nomad/client/logmon
+            github.com/hashicorp/nomad/client/logmon \
+            github.com/hashicorp/nomad/client/allocrunner/taskrunner/template
       - uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3.1.2
         with:
           name: results.xml

client/allocrunner/taskrunner/template/template_default_test.go

@@ -0,0 +1,69 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
+//go:build !windows
+
+package template
+
+import (
+	"os"
+	"path/filepath"
+	"syscall"
+	"testing"
+	"time"
+
+	"github.com/hashicorp/nomad/ci"
+	clienttestutil "github.com/hashicorp/nomad/client/testutil"
+	"github.com/hashicorp/nomad/helper/pointer"
+	"github.com/hashicorp/nomad/nomad/structs"
+	"github.com/hashicorp/nomad/testutil"
+	"github.com/shoenig/test/must"
+)
+
+// TestTaskTemplateManager_Permissions tests that we set file permissions
+// correctly. This test won't compile on Windows
+func TestTaskTemplateManager_Permissions(t *testing.T) {
+	ci.Parallel(t)
+	clienttestutil.RequireRoot(t)
+
+	// Make a template that will render immediately
+	content := "hello, world!"
+	file := "my.tmpl"
+	template := &structs.Template{
+		EmbeddedTmpl: content,
+		DestPath:     file,
+		ChangeMode:   structs.TemplateChangeModeNoop,
+		Perms:        "777",
+		Uid:          pointer.Of(503),
+		Gid:          pointer.Of(20),
+	}
+
+	harness := newTestHarness(t, []*structs.Template{template}, false, false)
+	harness.start(t)
+	defer harness.stop()
+
+	// Wait for the unblock
+	select {
+	case <-harness.mockHooks.UnblockCh:
+	case <-time.After(time.Duration(5*testutil.TestMultiplier()) * time.Second):
+		t.Fatalf("Task unblock should have been called")
+	}
+
+	// Check the file is there
+	path := filepath.Join(harness.taskDir, file)
+	fi, err := os.Stat(path)
+	if err != nil {
+		t.Fatalf("Failed to stat file: %v", err)
+	}
+
+	if m := fi.Mode(); m != os.ModePerm {
+		t.Fatalf("Got mode %v; want %v", m, os.ModePerm)
+	}
+
+	sys := fi.Sys()
+	uid := pointer.Of(int(sys.(*syscall.Stat_t).Uid))
+	gid := pointer.Of(int(sys.(*syscall.Stat_t).Gid))
+
+	must.Eq(t, template.Uid, uid)
+	must.Eq(t, template.Gid, gid)
+}