Add test case for database ID being wrong in configuration

Author: nathanjrobertson

phpstan-baseline-dev.neon

@@ -6,6 +6,12 @@ parameters:
 			count: 1
 			path: tests/src/Auth/Source/SQL2MultipleAuthTest.php
 
+		-
+			message: '#^Property SimpleSAML\\Test\\Module\\sqlauth\\Auth\\Source\\SQL2NonExistentDbTest\:\:\$config type has no value type specified in iterable type array\.$#'
+			identifier: missingType.iterableValue
+			count: 1
+			path: tests/src/Auth/Source/SQL2NonExistentDbTest.php
+
 		-
 			message: '#^Property SimpleSAML\\Test\\Module\\sqlauth\\Auth\\Source\\SQL2SimpleTest\:\:\$config type has no value type specified in iterable type array\.$#'
 			identifier: missingType.iterableValue

tests/src/Auth/Source/SQL2NonExistentDbTest.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SimpleSAML\Test\Module\sqlauth\Auth\Source;
+
+use Exception;
+use PHPUnit\Framework\TestCase;
+
+/*
+ * It was possible to misconfigure the SQL2 authentication source to point to
+ * a non-existent database. This test ensures that this misconfiguration is
+ * detected and handled gracefully.
+ */
+#CoversClass(SimpleSAML\Module\sqlauth\Auth\Source\SQL2::class)
+class SQL2NonExistentDbTest extends TestCase
+{
+    /** @var array<string, string> */
+    private array $info = ['AuthId' => 'testAuthId'];
+
+    protected array $config = [
+        "databases" => [
+            "defaultdb" => [
+                "dsn" => 'sqlite:file:defaultdb?mode=memory&cache=shared',
+                "username" => "notused",
+                "password" => "notused",
+            ],
+        ],
+        "auth_queries" => [
+            "auth_query" => [
+                "database" => "wrong-name", // Non-existent database
+                "query" => "select 1;",
+            ],
+        ],
+    ];
+
+    public function testNonExistentDatabaseFailure(): void
+    {
+        $this->expectException(Exception::class);
+        (new SQL2Wrapper($this->info, $this->config))->callLogin('bob', 'password');
+        $this->fail('Expected exception was not thrown.');
+    }
+}