Add tailscale driver

Signed-off-by: Bryan Frimin <bryan@probo.com>

pkg/accessreview/drivers/tailscale_test.go

@@ -0,0 +1,42 @@
+// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package drivers
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestTailscaleDriver(t *testing.T) {
+	t.Parallel()
+
+	rec := newRecorder(t, "testdata/tailscale", "TAILSCALE_TOKEN")
+	client := newVCRClient(rec, bearerAuth(os.Getenv("TAILSCALE_TOKEN")))
+
+	driver := NewTailscaleDriver(client)
+	records, err := driver.ListAccounts(context.Background())
+	require.NoError(t, err)
+	require.NotEmpty(t, records)
+
+	r := records[0]
+	assert.NotEmpty(t, r.Email)
+	assert.NotEmpty(t, r.ExternalID)
+	assert.NotEmpty(t, r.Role)
+	assert.NotNil(t, r.Active)
+}