diff --git a/tests/User/UserImpersonationTest.php b/tests/User/UserImpersonationTest.php
new file mode 100644
index 000000000..08ebdf95a
--- /dev/null
+++ b/tests/User/UserImpersonationTest.php
@@ -0,0 +1,188 @@
+<?php
+
+namespace Tests\User;
+
+use Tests\TestCase;
+
+class UserImpersonationTest extends TestCase
+{
+    public function test_impersonate_button_shown_on_edit_page_for_admin()
+    {
+        $viewer = $this->users->viewer();
+
+        $resp = $this->asAdmin()->get("/settings/users/{$viewer->id}");
+
+        $this->withHtml($resp)->assertElementExists("form[action$=\"/settings/users/{$viewer->id}/impersonate\"]");
+        $resp->assertSee('Impersonate User');
+    }
+
+    public function test_impersonate_button_not_shown_for_non_admin()
+    {
+        $viewer = $this->users->viewer();
+        $editor = $this->users->editor();
+
+        $resp = $this->actingAs($editor)->get("/settings/users/{$viewer->id}");
+
+        $resp->assertDontSee('Impersonate User');
+        $this->withHtml($resp)->assertElementNotExists("form[action$=\"/settings/users/{$viewer->id}/impersonate\"]");
+    }
+
+    public function test_impersonate_button_not_shown_for_own_user()
+    {
+        $admin = $this->users->admin();
+
+        $resp = $this->actingAs($admin)->get("/settings/users/{$admin->id}");
+
+        $resp->assertDontSee('Impersonate User');
+        $this->withHtml($resp)->assertElementNotExists("form[action$=\"/settings/users/{$admin->id}/impersonate\"]");
+    }
+
+    public function test_impersonate_button_not_shown_for_guest_user()
+    {
+        $guest = $this->users->guest();
+
+        $resp = $this->asAdmin()->get("/settings/users/{$guest->id}");
+
+        $resp->assertDontSee('Impersonate User');
+        $this->withHtml($resp)->assertElementNotExists("form[action$=\"/settings/users/{$guest->id}/impersonate\"]");
+    }
+
+    public function test_impersonate_button_not_shown_when_already_impersonating()
+    {
+        $viewer = $this->users->viewer();
+        $editor = $this->users->editor();
+
+        $this->asAdmin()->post("/settings/users/{$viewer->id}/impersonate");
+
+        $resp = $this->get("/settings/users/{$editor->id}");
+        $resp->assertDontSee('Impersonate User');
+    }
+
+    public function test_impersonate_sets_session_and_redirects_to_home()
+    {
+        $viewer = $this->users->viewer();
+
+        $resp = $this->asAdmin()->post("/settings/users/{$viewer->id}/impersonate");
+
+        $resp->assertRedirect('/');
+        $this->assertSessionHas('impersonate', $viewer->id);
+    }
+
+    public function test_impersonate_requires_users_manage_permission()
+    {
+        $viewer = $this->users->viewer();
+        $editor = $this->users->editor();
+
+        $resp = $this->actingAs($editor)->post("/settings/users/{$viewer->id}/impersonate");
+
+        $resp->assertRedirect('/');
+        $this->assertSessionMissing('impersonate');
+    }
+
+    public function test_cannot_impersonate_guest_user()
+    {
+        $guest = $this->users->guest();
+
+        $resp = $this->asAdmin()->post("/settings/users/{$guest->id}/impersonate");
+
+        $resp->assertRedirect("/settings/users/{$guest->id}");
+        $this->assertSessionError('You cannot impersonate this user');
+        $this->assertSessionMissing('impersonate');
+    }
+
+    public function test_cannot_impersonate_self()
+    {
+        $admin = $this->users->admin();
+
+        $resp = $this->actingAs($admin)->post("/settings/users/{$admin->id}/impersonate");
+
+        $resp->assertRedirect("/settings/users/{$admin->id}");
+        $this->assertSessionError('You cannot impersonate this user');
+        $this->assertSessionMissing('impersonate');
+    }
+
+    public function test_impersonation_banner_shown_while_impersonating()
+    {
+        $viewer = $this->users->viewer();
+
+        $this->asAdmin()->post("/settings/users/{$viewer->id}/impersonate");
+        $resp = $this->get('/');
+
+        $resp->assertSee('Impersonating: ' . $viewer->name);
+        $resp->assertSee('Stop Impersonating');
+    }
+
+    public function test_impersonation_banner_not_shown_when_not_impersonating()
+    {
+        $resp = $this->asAdmin()->get('/');
+
+        $resp->assertDontSee('Impersonating:');
+        $resp->assertDontSee('Stop Impersonating');
+    }
+
+    public function test_requests_are_performed_as_impersonated_user()
+    {
+        $viewer = $this->users->viewer();
+        $admin = $this->users->admin();
+
+        $this->actingAs($admin)->post("/settings/users/{$viewer->id}/impersonate");
+
+        $resp = $this->get('/');
+        $resp->assertSee('Impersonating: ' . $viewer->name);
+    }
+
+    public function test_stop_impersonate_clears_session_and_redirects_to_user_edit()
+    {
+        $viewer = $this->users->viewer();
+
+        $this->asAdmin()->post("/settings/users/{$viewer->id}/impersonate");
+        $this->assertSessionHas('impersonate', $viewer->id);
+
+        $resp = $this->get('/impersonate/stop');
+
+        $resp->assertRedirect("/settings/users/{$viewer->id}");
+        $this->assertSessionMissing('impersonate');
+    }
+
+    public function test_stop_impersonate_banner_gone_after_stopping()
+    {
+        $viewer = $this->users->viewer();
+
+        $this->asAdmin()->post("/settings/users/{$viewer->id}/impersonate");
+        $this->get('/impersonate/stop');
+
+        $resp = $this->get('/');
+        $resp->assertDontSee('Impersonating:');
+    }
+
+    public function test_middleware_does_not_switch_user_without_impersonate_session()
+    {
+        $admin = $this->users->admin();
+
+        $resp = $this->actingAs($admin)->get('/');
+
+        $resp->assertDontSee('Impersonating:');
+    }
+
+    public function test_middleware_does_not_switch_user_if_actor_lacks_users_manage()
+    {
+        $viewer = $this->users->viewer();
+        $editor = $this->users->editor();
+
+        $this->actingAs($editor)->withSession(['impersonate' => $viewer->id]);
+
+        $resp = $this->get('/');
+
+        $resp->assertDontSee('Impersonating: ' . $viewer->name);
+    }
+
+    public function test_stop_impersonate_link_shown_in_user_menu_while_impersonating()
+    {
+        $viewer = $this->users->viewer();
+
+        $this->asAdmin()->post("/settings/users/{$viewer->id}/impersonate");
+        $resp = $this->get('/');
+
+        $this->withHtml($resp)->assertElementContains('a[href="' . url('/impersonate/stop') . '"]', 'Stop Impersonating');
+    }
+}