1 files changed, 60 insertions, 0 deletions
diff --git a/tests/ConfigurationTest.php b/tests/ConfigurationTest.php
new file mode 100644
index 0000000..158d911
--- /dev/null
+++ b/tests/ConfigurationTest.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Cepis\Tests;
+
+use Cepis\Client;
+use PHPUnit\Framework\TestCase;
+
+final class ConfigurationTest extends TestCase
+{
+    public function testTrailingSlashIsNotDuplicated(): void
+    {
+        self::assertSame('http://x', (new Client(baseUrl: 'http://x/'))->baseUrl);
+        self::assertSame('http://x', (new Client(baseUrl: 'http://x///'))->baseUrl);
+    }
+
+    public function testDefaults(): void
+    {
+        $client = new Client();
+
+        self::assertSame(Client::DEFAULT_URL, $client->baseUrl);
+        self::assertSame(3, $client->maxAttempts);
+        self::assertSame(0.5, $client->backoffBase);
+        self::assertSame(8.0, $client->backoffMax);
+        self::assertNull($client->totalTimeout);
+    }
+
+    public function testUserAgentIdentifiesTheLibrary(): void
+    {
+        self::assertStringContainsString(
+            'cepis-php/' . Client::VERSION,
+            (new Client())->userAgent,
+        );
+        self::assertSame('myapp/1.0', (new Client(userAgent: 'myapp/1.0'))->userAgent);
+    }
+
+    public function testInvalidParameters(): void
+    {
+        foreach ([['maxAttempts' => 0], ['timeout' => 0.0], ['backoffBase' => -1.0]] as $bad) {
+            try {
+                new Client(...$bad);
+                self::fail('expected InvalidArgumentException for ' . json_encode($bad));
+            } catch (\InvalidArgumentException) {
+                self::assertTrue(true);
+            }
+        }
+    }
+
+    public function testDefaultClientIsShared(): void
+    {
+        self::assertSame(Client::default(), Client::default());
+        self::assertSame(Client::DEFAULT_URL, Client::default()->baseUrl);
+    }
+
+    public function testMaxBatchMatchesTheApiLimit(): void
+    {
+        self::assertSame(500, Client::MAX_BATCH);
+    }
+}