Dev -> master (#44)

* Fix linter warnings (#43)

Author: BoRuDar

README.md

@@ -1,8 +1,8 @@
 [![Go Report Card](https://goreportcard.com/badge/github.com/BoRuDar/configuration/v4)](https://goreportcard.com/report/github.com/BoRuDar/configuration/v4)
 [![codecov](https://codecov.io/gh/BoRuDar/configuration/branch/master/graph/badge.svg)](https://codecov.io/gh/BoRuDar/configuration)
+[![OpenSSF Best Practices](https://www.bestpractices.dev/projects/6295/badge)](https://www.bestpractices.dev/projects/6295)
 [![GoDoc](https://godoc.org/github.com/BoRuDar/configuration?status.png)](https://godoc.org/github.com/BoRuDar/configuration/v4)
 [![Mentioned in Awesome Go](https://awesome.re/mentioned-badge.svg)](https://github.com/avelino/awesome-go)
-[![OpenSSF Best Practices](https://www.bestpractices.dev/projects/6295/badge)](https://www.bestpractices.dev/projects/6295)
 
 
 # Configuration
@@ -13,7 +13,7 @@ Available features:
 - setting values from command line *flags* - `NewFlagProvider(&cfg)`
 - setting values from a JSON *file* - `NewJSONFileProvider("./testdata/input.json")`
 
-Supported types:
+## Supported types:
 - `string`, `*string`, `[]string`, `[]*string`
 - `bool`, `*bool`, `[]bool`, `[]*bool`
 - `int`, `int8`, `int16`, `int32`, `int64` + slices of these types
@@ -24,6 +24,7 @@ Supported types:
 - `*float32`, `*float64` + slices of these types
 - `time.Duration` from strings like `12ms`, `2s` etc.
 - embedded structs and pointers to structs
+- any custom type which satisfies `FieldSetter` [interface](#FieldSetter-interface)
 
 
 # Why?

configurator_test.go

@@ -7,6 +7,8 @@ import (
 	"time"
 )
 
+// nolint:paralleltest
+// t.Setenv doesn't work with t.Parallel()
 func TestConfigurator(t *testing.T) {
 	// setting command line flag
 	os.Args = []string{"smth", "-name=flag_value"}
@@ -83,6 +85,8 @@ func TestConfigurator(t *testing.T) {
 }
 
 func TestConfigurator_Errors(t *testing.T) {
+	t.Parallel()
+
 	tests := map[string]struct {
 		input     any
 		providers []Provider
@@ -102,6 +106,8 @@ func TestConfigurator_Errors(t *testing.T) {
 	for name, test := range tests {
 		test := test
 		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
 			err := New(test.input, test.providers...).InitValues()
 			if err == nil {
 				t.Fatal("expected error but got nil")
@@ -111,6 +117,8 @@ func TestConfigurator_Errors(t *testing.T) {
 }
 
 func TestEmbeddedFlags(t *testing.T) {
+	t.Parallel()
+
 	type (
 		Client struct {
 			ServerAddress string `flag:"addr|127.0.0.1:443|server address"`
@@ -130,6 +138,7 @@ func TestEmbeddedFlags(t *testing.T) {
 	assert(t, cfg.Client.ServerAddress, "addr_value")
 }
 
+// nolint:paralleltest
 func TestFallBackToDefault(t *testing.T) {
 	// defining a struct
 	cfg := struct {
@@ -149,6 +158,8 @@ func TestFallBackToDefault(t *testing.T) {
 }
 
 func TestSetOnFailFn(t *testing.T) {
+	t.Parallel()
+
 	cfg := struct {
 		Name string `default:"test_name"`
 	}{}
@@ -172,6 +183,8 @@ func TestSetOnFailFn(t *testing.T) {
 }
 
 func TestProviderName(t *testing.T) {
+	t.Parallel()
+
 	testCases := map[string]struct {
 		provider     Provider
 		expectedName string
@@ -198,21 +211,29 @@ func TestProviderName(t *testing.T) {
 		test := test
 
 		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
 			assert(t, test.expectedName, test.provider.Name())
 		})
 	}
 }
 
 func TestConfigurator_NameCollision(t *testing.T) {
+	t.Parallel()
+
 	err := New(&struct{}{}, NewDefaultProvider(), NewDefaultProvider()).InitValues()
 	assert(t, ErrProviderNameCollision, err)
 }
 
 func TestConfigurator_FailedProvider(t *testing.T) {
+	t.Parallel()
+
 	err := New(&struct{}{}, NewJSONFileProvider("doesn't exist")).InitValues()
 	assert(t, "cannot init [JSONFileProvider] provider: JSONFileProvider.Init: open doesn't exist: no such file or directory", err.Error())
 }
 
+// nolint:paralleltest
+// t.Setenv doesn't work with t.Parallel()
 func Test_FromEnvAndDefault(t *testing.T) {
 	t.Setenv("AGE", "24")
 

defaultProvider_test.go

@@ -7,6 +7,8 @@ import (
 )
 
 func TestDefaultProvider(t *testing.T) {
+	t.Parallel()
+
 	type testStruct struct {
 		Name string `default:"default_provider_val"`
 	}
@@ -28,6 +30,8 @@ func TestDefaultProvider(t *testing.T) {
 }
 
 func TestDefaultProviderPtr(t *testing.T) {
+	t.Parallel()
+
 	type testStruct struct {
 		Name *string `default:"default_provider_val_ptr"`
 	}
@@ -49,6 +53,8 @@ func TestDefaultProviderPtr(t *testing.T) {
 }
 
 func TestDefaultProviderFailed(t *testing.T) {
+	t.Parallel()
+
 	type testStruct struct {
 		Name string
 	}

envProvider_test.go

@@ -1,4 +1,4 @@
-// nolint:dupl
+// nolint:dupl,paralleltest
 package configuration
 
 import (

fieldStetter_test.go

@@ -275,6 +275,8 @@ func TestSetPtrValue_Floats(t *testing.T) {
 }
 
 func TestSetPtrValue_Bool(t *testing.T) {
+	t.Parallel()
+
 	var testBool *bool
 	fieldType := reflect.TypeOf(&testBool).Elem()
 	fieldVal := reflect.ValueOf(&testBool).Elem()

flagProvider_test.go

@@ -1,4 +1,4 @@
-// nolint:dupl,goconst
+// nolint:dupl,goconst,paralleltest
 package configuration
 
 import (
@@ -210,7 +210,6 @@ func TestFlagProvider_Errors(t *testing.T) {
 
 	for name, test := range testCases {
 		test := test
-
 		t.Run(name, func(t *testing.T) {
 			fieldType := reflect.TypeOf(test.obj).Elem().Field(0)
 			fieldVal := reflect.ValueOf(test.obj).Elem().Field(0)

jsonProvider_test.go

@@ -1,3 +1,4 @@
+// nolint:paralleltest
 package configuration
 
 import (