diff --git a/docs/ApplePay.md b/docs/ApplePay.md
index 5805e69..6d661b5 100644
--- a/docs/ApplePay.md
+++ b/docs/ApplePay.md
@@ -74,4 +74,5 @@ try {
     // Handle specific errors, e.g., domain not found, invalid operation.
 }
 
-?>
\ No newline at end of file
+?>
+```
\ No newline at end of file
diff --git a/docs/BulkCharge.md b/docs/BulkCharge.md
index 8628559..fcd0d24 100644
--- a/docs/BulkCharge.md
+++ b/docs/BulkCharge.md
@@ -119,4 +119,4 @@ if ($batchCode) {
     echo "\nSkipping batch-specific operations as no valid batch code was obtained from initiation.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Charge.md b/docs/Charge.md
index a579100..9b97040 100644
--- a/docs/Charge.md
+++ b/docs/Charge.md
@@ -163,4 +163,4 @@ try {
 // 2. You extract the reference from the initial response.
 // 3. You call the respective submit method with the user-provided data and the reference.
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Customer.md b/docs/Customer.md
index 2b5c50f..5d22495 100644
--- a/docs/Customer.md
+++ b/docs/Customer.md
@@ -149,4 +149,4 @@ try {
     echo "Error deactivating authorization '{$sampleAuthorizationCode}': " . $e->getMessage() . "\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Dispute.md b/docs/Dispute.md
index 61f5196..3490cdd 100644
--- a/docs/Dispute.md
+++ b/docs/Dispute.md
@@ -161,4 +161,4 @@ try {
     echo "Error exporting disputes: " . $e->getMessage() . "\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Integration.md b/docs/Integration.md
index 9d76478..2ebce31 100644
--- a/docs/Integration.md
+++ b/docs/Integration.md
@@ -65,4 +65,4 @@ try {
     echo "Error verifying updated payment session timeout: " . $e->getMessage() . "\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Miscellaneous.md b/docs/Miscellaneous.md
index 006646d..0a33075 100644
--- a/docs/Miscellaneous.md
+++ b/docs/Miscellaneous.md
@@ -86,4 +86,4 @@ try {
     echo "Error fetching Nigerian states: " . $e->getMessage() . "\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/PaymentPage.md b/docs/PaymentPage.md
index 36a486b..367fbbf 100644
--- a/docs/PaymentPage.md
+++ b/docs/PaymentPage.md
@@ -166,4 +166,4 @@ if ($fixedPageId && $dummyProductId) {
     echo "\nSkipping addProduct operation as either page ID or dummy product ID is missing.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/PaymentRequest.md b/docs/PaymentRequest.md
index 98f6c34..503c77e 100644
--- a/docs/PaymentRequest.md
+++ b/docs/PaymentRequest.md
@@ -140,4 +140,4 @@ try {
     echo "Error fetching total payment requests: " . $e->getMessage() . "\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Plan.md b/docs/Plan.md
index 558df46..8e8d3f8 100644
--- a/docs/Plan.md
+++ b/docs/Plan.md
@@ -102,4 +102,4 @@ if ($planId || $planCode) {
     echo "\nSkipping plan-specific operations as no valid plan ID/code was obtained from creation.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Product.md b/docs/Product.md
index 0afca76..99adfa3 100644
--- a/docs/Product.md
+++ b/docs/Product.md
@@ -106,4 +106,4 @@ if ($productId) {
     echo "\nSkipping product-specific operations as no valid product ID was obtained from creation.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Refund.md b/docs/Refund.md
index f99004a..a221c78 100644
--- a/docs/Refund.md
+++ b/docs/Refund.md
@@ -92,4 +92,4 @@ if ($refundId) {
     echo "\nSkipping fetch refund operation as no valid refund ID was obtained from creation.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Settlement.md b/docs/Settlement.md
index 65954bc..de5e060 100644
--- a/docs/Settlement.md
+++ b/docs/Settlement.md
@@ -69,4 +69,4 @@ if ($sampleSettlementId) {
     echo "\nSkipping fetching settlement transactions as no valid settlement ID was available.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/SubAccount.md b/docs/SubAccount.md
index a613314..79a2f74 100644
--- a/docs/SubAccount.md
+++ b/docs/SubAccount.md
@@ -93,4 +93,4 @@ if ($subaccountId || $subaccountCode) {
     echo "\nSkipping subaccount-specific operations as no valid subaccount ID/code was obtained from creation.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Subscription.md b/docs/Subscription.md
index 3a337c4..53b30bc 100644
--- a/docs/Subscription.md
+++ b/docs/Subscription.md
@@ -138,4 +138,4 @@ if ($subscriptionCode && $emailToken) {
     echo "\nSkipping subscription-specific operations as no valid subscription code/token was obtained.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Terminal.md b/docs/Terminal.md
index 9605fa2..4c83f9d 100644
--- a/docs/Terminal.md
+++ b/docs/Terminal.md
@@ -159,4 +159,4 @@ if ($commissionedTerminalId && $newTerminalSerialNumber) { // Only decommission
     echo "\nSkipping decommission operation as no new terminal was commissioned in this run.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Transaction.md b/docs/Transaction.md
index 93830ae..ae5a22f 100644
--- a/docs/Transaction.md
+++ b/docs/Transaction.md
@@ -207,4 +207,4 @@ if ($authorizationCode && $sampleCustomerEmail) {
     echo "\nSkipping partial debit as no valid authorization code or customer email is available.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/TransactionSplit.md b/docs/TransactionSplit.md
index 39f6035..9a37965 100644
--- a/docs/TransactionSplit.md
+++ b/docs/TransactionSplit.md
@@ -143,4 +143,4 @@ if ($splitId || $splitCode) {
     echo "\nSkipping split-specific operations as no valid split ID/code was obtained from creation.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Transfer.md b/docs/Transfer.md
index 5a2af42..0ad8e1c 100644
--- a/docs/Transfer.md
+++ b/docs/Transfer.md
@@ -145,4 +145,4 @@ if ($transferCode) {
     echo "\nSkipping transfer-specific operations as no valid transfer code is available.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/TransferControl.md b/docs/TransferControl.md
index f36a939..4201c94 100644
--- a/docs/TransferControl.md
+++ b/docs/TransferControl.md
@@ -116,4 +116,4 @@ try {
     echo "Error enabling OTP: " . $e->getMessage() . "\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/TransferRecipient.md b/docs/TransferRecipient.md
index 68b0a5a..3145f50 100644
--- a/docs/TransferRecipient.md
+++ b/docs/TransferRecipient.md
@@ -135,4 +135,4 @@ if ($recipientId || $recipientCode) {
     echo "\nSkipping recipient-specific operations as no valid recipient ID/code was obtained.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/Verification.md b/docs/Verification.md
index 1000ee9..2ab35b7 100644
--- a/docs/Verification.md
+++ b/docs/Verification.md
@@ -81,4 +81,4 @@ try {
     echo "Error resolving card BIN: " . $e->getMessage() . "\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/docs/VirtualAccount.md b/docs/VirtualAccount.md
index a8d4497..8180329 100644
--- a/docs/VirtualAccount.md
+++ b/docs/VirtualAccount.md
@@ -170,4 +170,4 @@ if ($virtualAccountId && $virtualAccountNumber && $virtualAccountBankSlug) {
     echo "\nSkipping virtual account-specific operations as no valid virtual account ID/number/bank slug was obtained.\n";
 }
 
-?>
\ No newline at end of file
+?>```
\ No newline at end of file
diff --git a/tests/Factory.php b/tests/Factory.php
new file mode 100644
index 0000000..48e0224
--- /dev/null
+++ b/tests/Factory.php
@@ -0,0 +1,37 @@
+<?php
+
+use MusheAbdulHakim\Paystack\Client;
+use MusheAbdulHakim\Paystack\Factory;
+use Psr\Http\Client\ClientInterface;
+
+it('can create a client with a secret key', function () {
+    $client = (new Factory())->withSecretKey('sk_test_123')->make();
+
+    expect($client)->toBeInstanceOf(Client::class);
+});
+
+it('can create a client with a public key', function () {
+    $client = (new Factory())->withPublicKey('pk_test_123')->make();
+
+    expect($client)->toBeInstanceOf(Client::class);
+});
+
+it('can create a client with a base URI', function () {
+    $client = (new Factory())->withBaseUri('https://example.com')->make();
+
+    expect($client)->toBeInstanceOf(Client::class);
+});
+
+it('can create a client with a custom HTTP client', function () {
+    $httpClient = Mockery::mock(ClientInterface::class);
+
+    $client = (new Factory())->withHttpClient($httpClient)->make();
+
+    expect($client)->toBeInstanceOf(Client::class);
+});
+
+it('can create a client with a custom HTTP header', function () {
+    $client = (new Factory())->withHttpHeader('X-Custom', 'value')->make();
+
+    expect($client)->toBeInstanceOf(Client::class);
+});
diff --git a/tests/Paystack.php b/tests/Paystack.php
index 0aaf2c3..9b092ed 100644
--- a/tests/Paystack.php
+++ b/tests/Paystack.php
@@ -5,6 +5,31 @@
 use MusheAbdulHakim\Paystack\Factory;
 use MusheAbdulHakim\Paystack\Paystack;
 
+it('can initialize the client factory', function () {
+    $factory = Paystack::init('secret');
+    expect($factory)->toBeInstanceOf(Factory::class);
+});
+
+it('can create a client with secret key', function () {
+    $client = Paystack::client('secret');
+    expect($client)->toBeInstanceOf(Client::class);
+});
+
+it('can create a client with secret key and base uri', function () {
+    $client = Paystack::client('secret', 'https://example.com');
+    expect($client)->toBeInstanceOf(Client::class);
+});
+
+it('can create a new factory instance', function () {
+    $factory = Paystack::factory();
+    expect($factory)->toBeInstanceOf(Factory::class);
+});
+
+it('should return a Factory instance when calling init', function () {
+    $factory = Paystack::init('test_secret');
+    expect($factory)->toBeInstanceOf(Factory::class);
+});
+
 it('may create client', function () {
     $paystack = Paystack::client('key');
     expect($paystack)->toBeInstanceOf(Client::class);