2 files changed, 110 insertions, 3 deletions
diff --git a/src/Support/Str.php b/src/Support/Str.php
index 32ada68..6225f7b 100644
--- a/src/Support/Str.php
+++ b/src/Support/Str.php
@@ -4,13 +4,13 @@ namespace PragmaRX\Google2FA\Support;
 
 class Str
 {
-	/**
+    /**
      * Compares two strings using a constant-time algorithm.
      *
      * Note: This method will leak length information.
      *
-	 * Note: Extracted from Illuminate\Support\Str.
-	 *
+     * Note: Extracted from Illuminate\Support\Str.
+     *
      * Note: Adapted from Symfony\Component\Security\Core\Util\StringUtils.
      *
      * @param  string  $knownString
diff --git a/tests/spec/Google2FASpec.php b/tests/spec/Google2FASpec.php
new file mode 100644
index 0000000..2a5e391
--- /dev/null
+++ b/tests/spec/Google2FASpec.php
@@ -0,0 +1,107 @@
+<?php
+
+namespace spec\PragmaRX\Google2FA;
+
+use Prophecy\Argument;
+use PhpSpec\ObjectBehavior;
+use PragmaRX\Google2FA\Google2FA;
+
+class Google2FASpec extends ObjectBehavior
+{
+	public $secret = 'ADUMJO5634NPDEKW';
+
+	public $url = 'https://chart.googleapis.com/chart?chs=200x200&chld=M|0&cht=qr&chl=otpauth%3A%2F%2Ftotp%2FPragmaRX%3Aacr%2Bpragmarx%40antoniocarlosribeiro.com%3Fsecret%3DADUMJO5634NPDEKW%26issuer%3DPragmaRX';
+
+    function it_is_initializable()
+    {
+        $this->shouldHaveType('PragmaRX\Google2FA\Google2FA');
+    }
+
+	function it_generates_a_valid_secret_key()
+	{
+		$this->generateSecretKey()->shouldHaveLength(16);
+
+		$this->generateSecretKey(17)->shouldHaveLength(17);
+
+		$this->generateSecretKey(17, 'antoniocarlos')->shouldStartWith('MFXHI33ONFXWGYLSNRXXG');
+
+		$this->generateSecretKey()->shouldBeAmongst(Google2FA::VALID_FOR_B32);
+	}
+
+	function it_gets_valid_timestamps()
+	{
+		$this->getTimestamp()->shouldBeValidTimestamp();
+	}
+
+	function it_decodes_base32_strings()
+	{
+		$this->base32Decode($this->secret)->shouldBe(
+			  chr(0)
+			. chr(232)
+			. chr(196)
+			. chr(187)
+			. chr(190)
+			. chr(223)
+			. chr(26)
+			. chr(241)
+			. chr(145)
+			. chr(86)
+		);
+	}
+
+	function it_creates_a_one_time_password()
+	{
+		$this->getCurrentOtp($this->secret)->shouldHaveLength(6);
+	}
+
+	function it_verifies_a_key()
+	{
+		// 26213400 = Human time (GMT): Sat, 31 Oct 1970 09:30:00 GMT
+
+		$this->verifyKey($this->secret, '410272', 4, 26213400)->shouldBe(true);
+	}
+
+	function it_removes_invalid_chars_from_secret()
+	{
+		$this->removeInvalidChars($this->secret . '!1-@@@')->shouldBe($this->secret);
+	}
+
+	function it_creates_a_qr_code()
+	{
+		$this->getQRCodeGoogleUrl('PragmaRX', 'acr+pragmarx@antoniocarlosribeiro.com', $this->secret)->shouldBe($this->url);
+	}
+
+	function it_converts_to_base32()
+	{
+		$this->toBase32('PragmaRX')->shouldBe('KBZGCZ3NMFJFQ');
+	}
+
+	public function getMatchers()
+	{
+		return [
+			'haveLength' => function($subject, $key)
+			{
+				return strlen($subject) == $key;
+			},
+
+			'shouldStartWith' => function($subject, $key)
+			{
+				return substr($key, 0, strlen($subject)) == $subject;
+			},
+
+			'beAmongst' => function($subject, $key)
+			{
+				return preg_replace('/[^'.$key.']/', '', $subject) === $subject;
+			},
+
+		    'beValidTimestamp' => function($timestamp)
+		    {
+			    return is_double($timestamp)
+						&& ($timestamp <= PHP_INT_MAX)
+						&& ($timestamp >= ~PHP_INT_MAX);
+		    },
+
+		];
+	}
+
+}