tests: add assertions

Author: kenjis

tests/Controllers/LoginTest.php

@@ -139,6 +139,8 @@ public function testLoginActionUsernameSuccess(): void
         $result->assertSessionHas('user', ['id' => 1]);
         $result->assertStatus(302);
         $result->assertRedirect();
+        $result->assertSessionMissing('error');
+        $result->assertSessionMissing('errors');
         $this->assertSame(site_url(), $result->getRedirectUrl());
 
         // Login should have been recorded successfully
@@ -191,6 +193,8 @@ public function testLoginRedirectsToActionIfDefined(): void
         // Should have been redirected to the action's page.
         $result->assertStatus(302);
         $result->assertRedirect();
+        $result->assertSessionMissing('error');
+        $result->assertSessionMissing('errors');
         $this->assertSame(site_url('auth/a/show'), $result->getRedirectUrl());
     }
 }

tests/Controllers/RegisterTest.php

@@ -53,6 +53,8 @@ public function testRegisterActionSuccess(): void
 
         $result->assertStatus(302);
         $result->assertRedirect();
+        $result->assertSessionMissing('error');
+        $result->assertSessionMissing('errors');
 
         $this->assertSame(site_url(), $result->getRedirectUrl());
 
@@ -96,6 +98,7 @@ public function testRegisterRedirectsIfNotAllowed(): void
 
         $result->assertStatus(302);
         $result->assertRedirect();
+        $result->assertSessionHas('error');
     }
 
     public function testRegisterActionRedirectsIfNotAllowed(): void
@@ -108,6 +111,7 @@ public function testRegisterActionRedirectsIfNotAllowed(): void
 
         $result->assertStatus(302);
         $result->assertRedirect();
+        $result->assertSessionHas('error');
     }
 
     public function testRegisterActionInvalidData(): void