From 0d5eff4c8f21d251cb535414900b8814f45b7b33 Mon Sep 17 00:00:00 2001
From: Sergey Fedchenko <sergey@adeven.com>
Date: Thu, 20 Feb 2020 10:44:30 +0100
Subject: [PATCH] checkers: add draw.Draw to draw.DrawMask checker (#904)

Fixes #819
---
 checkers/testdata/wrapperFunc/negative_tests.go | 10 ++++++++--
 checkers/testdata/wrapperFunc/positive_tests.go |  7 ++++++-
 checkers/wrapperFunc_checker.go                 |  5 +++++
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/checkers/testdata/wrapperFunc/negative_tests.go b/checkers/testdata/wrapperFunc/negative_tests.go
index f1267636f..6fee0dbea 100644
--- a/checkers/testdata/wrapperFunc/negative_tests.go
+++ b/checkers/testdata/wrapperFunc/negative_tests.go
@@ -2,12 +2,14 @@ package checker_test
 
 import (
 	"bytes"
+	"image"
+	"image/draw"
 	"net/http"
 	"strings"
 	"sync"
 )
 
-func appliedSuggestions(s string, b []byte) {
+func appliedSuggestions(s string, b []byte, i draw.Image, r image.Rectangle, p image.Point, o draw.Op) {
 	var wg sync.WaitGroup
 	wg.Done()
 	wg.Add(1)
@@ -28,9 +30,11 @@ func appliedSuggestions(s string, b []byte) {
 	bytes.ReplaceAll(b, b, b)
 
 	_ = http.NotFoundHandler()
+
+	draw.Draw(i, r, i, p, o)
 }
 
-func nonMatchingArgs(s string, b []byte) {
+func nonMatchingArgs(s string, b []byte, i draw.Image, r image.Rectangle, p image.Point, o draw.Op) {
 	var wg sync.WaitGroup
 	wg.Add(1)
 
@@ -45,4 +49,6 @@ func nonMatchingArgs(s string, b []byte) {
 	bytes.Replace(b, b, b, 1)
 
 	_ = http.HandlerFunc(nil)
+
+	draw.DrawMask(i, r, i, p, i, image.Point{}, o)
 }
diff --git a/checkers/testdata/wrapperFunc/positive_tests.go b/checkers/testdata/wrapperFunc/positive_tests.go
index 2db53b98a..6d753f18b 100644
--- a/checkers/testdata/wrapperFunc/positive_tests.go
+++ b/checkers/testdata/wrapperFunc/positive_tests.go
@@ -2,13 +2,15 @@ package checker_test
 
 import (
 	"bytes"
+	"image"
+	"image/draw"
 	"net/http"
 	"strings"
 	"sync"
 	"unicode"
 )
 
-func f(s string, b []byte) {
+func f(s string, b []byte, i draw.Image, r image.Rectangle, p image.Point, o draw.Op) {
 	var wg sync.WaitGroup
 	/*! use WaitGroup.Done method in `wg.Add(-1)` */
 	wg.Add(-1)
@@ -41,4 +43,7 @@ func f(s string, b []byte) {
 
 	/*! use http.NotFoundHandler method in `http.HandlerFunc(http.NotFound)` */
 	_ = http.HandlerFunc(http.NotFound)
+
+	/*! use draw.Draw method in `draw.DrawMask(i, r, i, p, nil, image.Point{}, o)` */
+	draw.DrawMask(i, r, i, p, nil, image.Point{}, o)
 }
diff --git a/checkers/wrapperFunc_checker.go b/checkers/wrapperFunc_checker.go
index bba82e5ee..8f2d06c59 100644
--- a/checkers/wrapperFunc_checker.go
+++ b/checkers/wrapperFunc_checker.go
@@ -81,6 +81,11 @@ func init() {
 			"bytes.Map => bytes.ToTitle": {
 				{0, "unicode.ToTitle"},
 			},
+
+			"draw.DrawMask => draw.Draw": {
+				{4, "nil"},
+				{5, "image.Point{}"},
+			},
 		}
 
 		matchers := make(map[string]*matcher)