Fix coverage

Author: BoRuDar

configurator_test.go

@@ -3,6 +3,7 @@ package configuration
 import (
 	"net"
 	"os"
+	"reflect"
 	"testing"
 	"time"
 )
@@ -257,3 +258,45 @@ func TestConfigurator_NoTags_Embedded_ptr(t *testing.T) {
 	_, err := New[cfg](NewDefaultProvider())
 	assert(t, "field [Name] with tags [] hasn't been set", err.Error())
 }
+
+type _mockProvider struct{}
+
+func (_mockProvider) Name() string {
+	return "mock"
+}
+
+func (_mockProvider) Tag() string {
+	return DefaultProviderTag
+}
+
+func (_mockProvider) Init(_ any) error {
+	return nil
+}
+
+func (dp _mockProvider) Provide(_ reflect.StructField, _ reflect.Value) error {
+	return nil
+}
+
+func TestConfigurator_Tags_collision(t *testing.T) {
+	t.Parallel()
+
+	type cfg struct {
+		Name string `default:"name"`
+	}
+
+	_, err := New[cfg](NewDefaultProvider(), _mockProvider{})
+	assert(t, ErrProviderTagCollision, err)
+}
+
+func TestConfigurator_FailedToSetAll(t *testing.T) {
+	t.Parallel()
+
+	type cfg struct {
+		S struct {
+			Name string `env:"NOPE_ENV_BAD" default:""`
+		}
+	}
+
+	_, err := FromEnvAndDefault[cfg]()
+	assert(t, "field [Name] with tags [env:\"NOPE_ENV_BAD\" default:\"\"] hasn't been set", err.Error())
+}

envProvider_test.go

@@ -44,3 +44,18 @@ func TestEnvProviderFailed(t *testing.T) {
 		t.Fatal("must NOT be nil")
 	}
 }
+
+func TestEnvProvider_EmptyKey(t *testing.T) {
+	type testStruct struct {
+		Name string `env:""`
+	}
+	testObj := testStruct{}
+
+	fieldType := reflect.TypeOf(&testObj).Elem().Field(0)
+	fieldVal := reflect.ValueOf(&testObj).Elem().Field(0)
+
+	provider := NewEnvProvider()
+
+	err := provider.Provide(fieldType, fieldVal)
+	assert(t, "EnvProvider: key is empty", err.Error())
+}

jsonProvider_test.go

@@ -112,3 +112,18 @@ func TestFileProvider_Init(t *testing.T) {
 	_, err = New[Cfg](NewJSONFileProvider("./testdata/malformed_input.json"))
 	assert(t, "cannot init [JSONFileProvider] provider: JSONFileProvider.Init: invalid character '}' looking for beginning of value", err.Error())
 }
+
+func TestJSONProvider_empty_tag(t *testing.T) {
+	type testStruct struct {
+		Test int `file_json:""`
+	}
+
+	testObj := testStruct{}
+
+	fieldType := reflect.TypeOf(&testObj).Elem().Field(0)
+	fieldVal := reflect.ValueOf(&testObj).Elem().Field(0)
+
+	provider := NewJSONFileProvider("./testdata/input.json")
+	err := provider.Provide(fieldType, fieldVal)
+	assert(t, "JSONFileProvider: key is empty", err.Error())
+}