Add position for book in collection

internal/apitest/post_collection_addbook_test.go

@@ -11,24 +11,36 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestPostCollectionBookHandler_Ok(t *testing.T) {
+func TestPostCollectionBookHandler_AddOk(t *testing.T) {
 	payload :=
 		`{
 			"bookId": 9
 		}`
 	collectionId := "1"
-	status := testPostCollectionBookHandler(t, collectionId, payload)
+	status := testPostCollectionBookHandler(collectionId, payload)
 	assert.Equal(t, http.StatusOK, status)
 	_, collection := testGetCollection(t, collectionId, "10", "0")
 	assert.Equal(t, int64(7), collection.Count)
 }
 
+func TestPostCollectionBookHandler_BookOK(t *testing.T) {
+	payload :=
+		`{
+			"bookId": 7
+		}`
+	collectionId := "2"
+	status := testPostCollectionBookHandler(collectionId, payload)
+	assert.Equal(t, http.StatusOK, status)
+	_, collection := testGetCollection(t, collectionId, "10", "0")
+	assert.Equal(t, uint(7), collection.Items[0].Book.ID)
+}
+
 func TestPostCollectionBookHandler_CollectionNotFound(t *testing.T) {
 	payload :=
 		`{
 			"bookId": 9
 		}`
-	status := testPostCollectionBookHandler(t, "12", payload)
+	status := testPostCollectionBookHandler("12", payload)
 	assert.Equal(t, http.StatusNotFound, status)
 }
 
@@ -37,7 +49,7 @@ func TestPostCollectionBookHandler_BookNotFound(t *testing.T) {
 		`{
 			"bookId": 14654
 		}`
-	status := testPostCollectionBookHandler(t, "1", payload)
+	status := testPostCollectionBookHandler("1", payload)
 	assert.Equal(t, http.StatusNotFound, status)
 }
 
@@ -46,11 +58,11 @@ func TestPostCollectionBookHandler_Unauthorized(t *testing.T) {
 		`{
 			"bookId": 9
 		}`
-	status := testPostCollectionBookHandler(t, "3", payload)
+	status := testPostCollectionBookHandler("3", payload)
 	assert.Equal(t, http.StatusUnauthorized, status)
 }
 
-func testPostCollectionBookHandler(t *testing.T, collectionId string, payload string) int {
+func testPostCollectionBookHandler(collectionId string, payload string) int {
 	router := testutils.TestSetup()
 	w := httptest.NewRecorder()