Add Resell V2 licenses List method and fixes

Fix License ID field type and add List method.

selvpcclient/resell/v2/licenses/doc.go

@@ -8,6 +8,16 @@ Example of getting a single license referenced by its id
   if err != nil {
     log.Fatal(err)
   }
-	fmt.Println(license)
+  fmt.Println(license)
+
+Example of getting all licenses
+
+  allLicenses, _, err := licenses.List(ctx, resellClient)
+  if err != nil {
+    log.Fatal(err)
+  }
+  for _, license := range allLicenses {
+    fmt.Println(license)
+  }
 */
 package licenses

selvpcclient/resell/v2/licenses/requests.go

@@ -31,3 +31,26 @@ func Get(ctx context.Context, client *selvpcclient.ServiceClient, id string) (*L
 
 	return result.License, responseResult, nil
 }
+
+// List gets a list of licenses in the current domain.
+func List(ctx context.Context, client *selvpcclient.ServiceClient) ([]*License, *selvpcclient.ResponseResult, error) {
+	url := strings.Join([]string{client.Endpoint, resourceURL}, "/")
+	responseResult, err := client.DoRequest(ctx, "GET", url, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+	if responseResult.Err != nil {
+		return nil, responseResult, responseResult.Err
+	}
+
+	// Extract licenses from the response body.
+	var result struct {
+		Licenses []*License `json:"licenses"`
+	}
+	err = responseResult.ExtractResult(&result)
+	if err != nil {
+		return nil, responseResult, err
+	}
+
+	return result.Licenses, responseResult, nil
+}

selvpcclient/resell/v2/licenses/schemas.go

@@ -5,7 +5,7 @@ import "github.com/selectel/go-selvpcclient/selvpcclient/resell/v2/servers"
 // License represents a single Resell Floating IP.
 type License struct {
 	// ID is a unique id of the license.
-	ID string `json:"id"`
+	ID int `json:"id"`
 
 	// ProjectID represents an associated Resell project.
 	ProjectID string `json:"project_id"`

selvpcclient/resell/v2/licenses/testing/fixtures.go

@@ -11,7 +11,7 @@ import (
 const TestGetLicenseResponseRaw = `
 {
     "license": {
-        "id": "123123",
+        "id": 123123,
         "project_id": "49338ac045f448e294b25d013f890317",
         "region": "ru-2",
         "servers": [
@@ -32,7 +32,7 @@ var licenseServerTimeStamp, _ = time.Parse(time.RFC3339, "2018-02-20T22:02:21Z")
 
 // TestGetLicenseResponse represents an unmarshalled TestGetLicenseResponseRaw.
 var TestGetLicenseResponse = &licenses.License{
-	ID:        "123123",
+	ID:        123123,
 	ProjectID: "49338ac045f448e294b25d013f890317",
 	Region:    "ru-2",
 	Status:    "ACTIVE",
@@ -46,3 +46,58 @@ var TestGetLicenseResponse = &licenses.License{
 		},
 	},
 }
+
+// TestListLicensesResponseRaw represents a raw response from the List request.
+const TestListLicensesResponseRaw = `
+{
+    "licenses": [
+        {
+            "id": 1123123,
+            "project_id": "49338ac045f448e294b25d013f890317",
+            "region": "ru-1",
+            "status": "DOWN",
+            "type": "license_windows_2012_standard"
+        },
+        {
+            "id": 124123,
+            "project_id": "49338ac045f448e294b25d013f890317",
+            "region": "ru-3",
+            "status": "DOWN",
+            "type": "license_windows_2016_standard"
+        },
+        {
+            "id": 13212,
+            "project_id": "49338ac045f448e294b25d013f890317",
+            "region": "ru-2",
+            "status": "DOWN",
+            "type": "license_windows_2016_standard"
+        }
+    ]
+}
+`
+
+// TestListLicensesSingleResponseRaw represents a raw response with a single license from the List request.
+const TestListLicensesSingleResponseRaw = `
+{
+    "licenses": [
+        {
+            "id": 1123123,
+            "project_id": "49338ac045f448e294b25d013f890317",
+            "region": "ru-1",
+			"status": "DOWN",
+            "type": "license_windows_2012_standard"
+        }
+    ]
+}
+`
+
+// TestListLicensesSingleResponse represents the unmarshalled TestListLicensesSingleResponseRaw response.
+var TestListLicensesSingleResponse = []*licenses.License{
+	{
+		ID:        1123123,
+		ProjectID: "49338ac045f448e294b25d013f890317",
+		Region:    "ru-1",
+		Status:    "DOWN",
+		Type:      "license_windows_2012_standard",
+	},
+}

selvpcclient/resell/v2/licenses/testing/requests_test.go

@@ -36,3 +36,60 @@ func TestGetLicense(t *testing.T) {
 		t.Fatalf("expected %#v, but got %#v", expected, actual)
 	}
 }
+
+func TestListLicenses(t *testing.T) {
+	testEnv := testutils.SetupTestEnv()
+	defer testEnv.TearDownTestEnv()
+	testEnv.NewTestResellV2Client()
+	testEnv.Mux.HandleFunc("/resell/v2/licenses", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Add("Content-Type", "application/json")
+		fmt.Fprintf(w, TestListLicensesResponseRaw)
+
+		if r.Method != http.MethodGet {
+			t.Fatalf("expected %s method but got %s", http.MethodGet, r.Method)
+		}
+	})
+
+	ctx := context.Background()
+	actual, _, err := licenses.List(ctx, testEnv.Client)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if actual == nil {
+		t.Fatal("didn't get licenses")
+	}
+	actualKind := reflect.TypeOf(actual).Kind()
+	if actualKind != reflect.Slice {
+		t.Errorf("expected slice of pointers to licenses, but got %v", actualKind)
+	}
+	if len(actual) != 3 {
+		t.Errorf("expected 3 licenses, but got %d", len(actual))
+	}
+}
+
+func TestListLicensesSingle(t *testing.T) {
+	testEnv := testutils.SetupTestEnv()
+	defer testEnv.TearDownTestEnv()
+	testEnv.NewTestResellV2Client()
+	testEnv.Mux.HandleFunc("/resell/v2/licenses", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Add("Content-Type", "application/json")
+		fmt.Fprintf(w, TestListLicensesSingleResponseRaw)
+
+		if r.Method != http.MethodGet {
+			t.Fatalf("expected %s method but got %s", http.MethodGet, r.Method)
+		}
+	})
+
+	ctx := context.Background()
+	actual, _, err := licenses.List(ctx, testEnv.Client)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	expected := TestListLicensesSingleResponse
+
+	if !reflect.DeepEqual(actual, expected) {
+		t.Fatalf("expected %#v, but got %#v", expected, actual)
+	}
+}