all: Apply staticcheck recommendations

tpl/data/data.go

@@ -58,18 +58,18 @@ func (ns *Namespace) GetCSV(sep string, urlParts ...string) (d [][]string, err e
 	url := strings.Join(urlParts, "")
 	cache := ns.cacheGetCSV
 
-	unmarshal := func(b []byte) (error, bool) {
+	unmarshal := func(b []byte) (bool, error) {
 		if !bytes.Contains(b, []byte(sep)) {
-			return _errors.Errorf("cannot find separator %s in CSV for %s", sep, url), false
+			return false, _errors.Errorf("cannot find separator %s in CSV for %s", sep, url)
 		}
 
 		if d, err = parseCSV(b, sep); err != nil {
 			err = _errors.Wrapf(err, "failed to parse CSV file %s", url)
 
-			return err, true
+			return true, err
 		}
 
-		return nil, false
+		return false, nil
 	}
 
 	var req *http.Request
@@ -103,12 +103,12 @@ func (ns *Namespace) GetJSON(urlParts ...string) (interface{}, error) {
 		return nil, _errors.Wrapf(err, "Failed to create request for getJSON resource %s", url)
 	}
 
-	unmarshal := func(b []byte) (error, bool) {
+	unmarshal := func(b []byte) (bool, error) {
 		err := json.Unmarshal(b, &v)
 		if err != nil {
-			return err, true
+			return true, err
 		}
-		return nil, false
+		return false, nil
 	}
 
 	req.Header.Add("Accept", "application/json")

tpl/data/resources.go

@@ -34,7 +34,7 @@ var (
 )
 
 // getRemote loads the content of a remote file. This method is thread safe.
-func (ns *Namespace) getRemote(cache *filecache.Cache, unmarshal func([]byte) (error, bool), req *http.Request) error {
+func (ns *Namespace) getRemote(cache *filecache.Cache, unmarshal func([]byte) (bool, error), req *http.Request) error {
 	url := req.URL.String()
 	id := helpers.MD5String(url)
 	var handled bool
@@ -63,7 +63,7 @@ func (ns *Namespace) getRemote(cache *filecache.Cache, unmarshal func([]byte) (e
 			}
 			res.Body.Close()
 
-			err, retry = unmarshal(b)
+			retry, err = unmarshal(b)
 
 			if err == nil {
 				// Return it so it can be cached.
@@ -85,7 +85,7 @@ func (ns *Namespace) getRemote(cache *filecache.Cache, unmarshal func([]byte) (e
 
 	if !handled {
 		// This is cached content and should be correct.
-		err, _ = unmarshal(b)
+		_, err = unmarshal(b)
 	}
 
 	return err
@@ -104,14 +104,14 @@ func getLocal(url string, fs afero.Fs, cfg config.Provider) ([]byte, error) {
 
 // getResource loads the content of a local or remote file and returns its content and the
 // cache ID used, if relevant.
-func (ns *Namespace) getResource(cache *filecache.Cache, unmarshal func(b []byte) (error, bool), req *http.Request) error {
+func (ns *Namespace) getResource(cache *filecache.Cache, unmarshal func(b []byte) (bool, error), req *http.Request) error {
 	switch req.URL.Scheme {
 	case "":
 		b, err := getLocal(req.URL.String(), ns.deps.Fs.Source, ns.deps.Cfg)
 		if err != nil {
 			return err
 		}
-		err, _ = unmarshal(b)
+		_, err = unmarshal(b)
 		return err
 	default:
 		return ns.getRemote(cache, unmarshal, req)

tpl/data/resources_test.go

@@ -114,9 +114,9 @@ func TestScpGetRemote(t *testing.T) {
 		ns.client = cl
 
 		var c []byte
-		f := func(b []byte) (error, bool) {
+		f := func(b []byte) (bool, error) {
 			c = b
-			return nil, false
+			return false, nil
 		}
 
 		err = ns.getRemote(cache, f, req)
@@ -158,15 +158,15 @@ func TestScpGetRemoteParallel(t *testing.T) {
 				defer wg.Done()
 				for j := 0; j < 10; j++ {
 					var c []byte
-					f := func(b []byte) (error, bool) {
+					f := func(b []byte) (bool, error) {
 						c = b
-						return nil, false
+						return false, nil
 					}
 					err := ns.getRemote(ns.cacheGetJSON, f, req)
 
 					assert.NoError(t, err)
 					if string(content) != string(c) {
-						t.Fatalf("expected\n%q\ngot\n%q", content, c)
+						t.Errorf("expected\n%q\ngot\n%q", content, c)
 					}
 
 					time.Sleep(23 * time.Millisecond)