From 289adad73c606ff8a57574c02bd0cc41dce36387 Mon Sep 17 00:00:00 2001
From: Petr Kopac <pkopac@users.noreply.github.com>
Date: Mon, 29 May 2017 16:45:16 +0200
Subject: [PATCH] [DP-468] Retrieve Invoice endpoint (#29)

---
 README.md                  |  8 ++++-
 src/Invoice.php            |  3 ++
 tests/Unit/InvoiceTest.php | 69 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 79 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index ac3b8c5..2930c31 100644
--- a/README.md
+++ b/README.md
@@ -99,7 +99,7 @@ $ds = ChartMogul\DataSource::create([
 ]);
 ```
 
-**Get a Datasource by UUID**
+**Get a Datasource**
 
 ```php
 ChartMogul\DataSource::retrieve($uuid);
@@ -398,6 +398,12 @@ $invoices = ChartMogul\Invoice::all([
 ]);
 ```
 
+**Retrieve an Invoice**
+
+```php
+$invoice = ChartMogul\Invoice::retrieve('inv_uuid');
+```
+
 ### Transactions
 
 **Create a Transaction**
diff --git a/src/Invoice.php b/src/Invoice.php
index 0845f7e..e1305f7 100644
--- a/src/Invoice.php
+++ b/src/Invoice.php
@@ -8,6 +8,7 @@
 use ChartMogul\LineItems\Subscription as SubsItem;
 use ChartMogul\Service\AllTrait;
 use ChartMogul\Service\DestroyTrait;
+use ChartMogul\Service\GetTrait;
 use ChartMogul\Resource\AbstractResource;
 use ChartMogul\Transactions\AbstractTransaction;
 use ChartMogul\Transactions\Payment;
@@ -21,6 +22,8 @@ class Invoice extends AbstractResource
 {
     use AllTrait;
     use DestroyTrait;
+    use GetTrait;
+
     /**
      * @ignore
      */
diff --git a/tests/Unit/InvoiceTest.php b/tests/Unit/InvoiceTest.php
index 4dedaa0..801fd73 100644
--- a/tests/Unit/InvoiceTest.php
+++ b/tests/Unit/InvoiceTest.php
@@ -62,6 +62,53 @@ class InvoiceTest extends PHPUnit_Framework_TestCase
       "total_pages": 3
     }';
 
+    const RETRIEVE_INVOICE_JSON = '{
+      "uuid": "inv_565c73b2-85b9-49c9-a25e-2b7df6a677c9",
+      "external_id": "INV0001",
+      "date": "2015-11-01T00:00:00.000Z",
+      "due_date": "2015-11-15T00:00:00.000Z",
+      "currency": "USD",
+      "line_items": [
+        {
+          "uuid": "li_d72e6843-5793-41d0-bfdf-0269514c9c56",
+          "external_id": null,
+          "type": "subscription",
+          "subscription_uuid": "sub_e6bc5407-e258-4de0-bb43-61faaf062035",
+          "plan_uuid": "pl_eed05d54-75b4-431b-adb2-eb6b9e543206",
+          "prorated": false,
+          "service_period_start": "2015-11-01T00:00:00.000Z",
+          "service_period_end": "2015-12-01T00:00:00.000Z",
+          "amount_in_cents": 5000,
+          "quantity": 1,
+          "discount_code": "PSO86",
+          "discount_amount_in_cents": 1000,
+          "tax_amount_in_cents": 900,
+          "account_code": null
+        },
+        {
+          "uuid": "li_0cc8c112-beac-416d-af11-f35744ca4e83",
+          "external_id": null,
+          "type": "one_time",
+          "description": "Setup Fees",
+          "amount_in_cents": 2500,
+          "quantity": 1,
+          "discount_code": "PSO86",
+          "discount_amount_in_cents": 500,
+          "tax_amount_in_cents": 450,
+          "account_code": null
+        }
+      ],
+      "transactions": [
+        {
+          "uuid": "tr_879d560a-1bec-41bb-986e-665e38a2f7bc",
+          "external_id": null,
+          "type": "payment",
+          "date": "2015-11-05T00:14:23.000Z",
+          "result": "successful"
+        }
+      ]
+    }';
+
     public function testAllInvoices()
     {
         $stream = Psr7\stream_for(InvoiceTest::ALL_INVOICE_JSON);
@@ -114,4 +161,26 @@ public function testDestroyInvoiceNotFound()
         $cmClient = new Client(null, $mockClient);
         $result = (new Invoice(["uuid" => "inv_123"], $cmClient))->destroy();
     }
+
+    public function testRetrieveInvoice()
+    {
+        $stream = Psr7\stream_for(InvoiceTest::RETRIEVE_INVOICE_JSON);
+        $response = new Response(200, ['Content-Type' => 'application/json'], $stream);
+        $mockClient = new \Http\Mock\Client();
+        $mockClient->addResponse($response);
+
+        $uuid = 'inv_565c73b2-85b9-49c9-a25e-2b7df6a677c9';
+
+        $cmClient = new Client(null, $mockClient);
+        $result = Invoice::retrieve($uuid, $cmClient);
+        $request = $mockClient->getRequests()[0];
+
+        $this->assertEquals("GET", $request->getMethod());
+        $uri = $request->getUri();
+        $this->assertEquals("", $uri->getQuery());
+        $this->assertEquals("/v1/invoices/".$uuid, $uri->getPath());
+
+        $this->assertTrue($result instanceof Invoice);
+        $this->assertEquals($uuid, $result->uuid);
+    }
 }