feat(file_test): add file tests

Signed-off-by: Bence Csati <[email protected]>

main.go

@@ -103,6 +103,8 @@ func main() {
 		newProvider, err := file.NewFileProvider(os.Getenv("SECRETS_FILE_PATH"))
 		if err != nil {
 			logger.Error(fmt.Errorf("failed to create provider: %w", err).Error())
+
+			os.Exit(1)
 		}
 		provider = newProvider
 	default:

provider/file/file_test.go

@@ -0,0 +1,161 @@
+// Copyright © 2023 Bank-Vaults Maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package file
+
+import (
+	"context"
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/bank-vaults/secret-init/provider"
+)
+
+func TestNewFileProvider(t *testing.T) {
+	//create a new secret-file and write secrets into it
+	tmpfile := createTempFileWithContent(t)
+
+	defer os.Remove(tmpfile.Name())
+
+	//create new environment variables
+	//for file-path and secrets to get
+	setupEnvs(t, tmpfile)
+
+	providerName := os.Getenv("PROVIDER")
+	if providerName == "file" {
+		_, err := NewFileProvider(os.Getenv("SECRETS_FILE_PATH"))
+		if err != nil {
+			t.Fatal(err)
+		}
+	} else {
+		t.Fatalf("invalid provider specified: %s", providerName)
+	}
+}
+
+func TestFileLoadSecrets(t *testing.T) {
+	//create a new secret-file and write secrets into it
+	tmpfile := createTempFileWithContent(t)
+
+	defer os.Remove(tmpfile.Name())
+
+	//create new environment variables
+	//for file-path and secrets to get
+	setupEnvs(t, tmpfile)
+
+	var provider provider.Provider
+	providerName := os.Getenv("PROVIDER")
+	if providerName == "file" {
+		newProvider, err := NewFileProvider(os.Getenv("SECRETS_FILE_PATH"))
+		if err != nil {
+			t.Fatal(err)
+		}
+		provider = newProvider
+	} else {
+		t.Fatalf("invalid provider specified: %s", providerName)
+	}
+
+	environ := make(map[string]string, len(os.Environ()))
+
+	for _, env := range os.Environ() {
+		split := strings.SplitN(env, "=", 2)
+		name := split[0]
+		value := split[1]
+		environ[name] = value
+	}
+
+	ctx := context.Background()
+	envs, err := provider.LoadSecrets(ctx, environ)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	test := []string{
+		"MYSQL_PASSWORD=3xtr3ms3cr3t",
+		"AWS_SECRET_ACCESS_KEY=s3cr3t",
+		"AWS_ACCESS_KEY_ID=secretId",
+	}
+	//check if secrets have been correctly loaded
+	areEqual(t, envs, test)
+}
+
+func areEqual(t *testing.T, actual, expected []string) {
+	actualMap := make(map[string]string, len(expected))
+	expectedMap := make(map[string]string, len(expected))
+
+	for _, env := range actual {
+		split := strings.SplitN(env, "=", 2)
+		key := split[0]
+		value := split[1]
+		actualMap[key] = value
+	}
+
+	for _, env := range expected {
+		split := strings.SplitN(env, "=", 2)
+		key := split[0]
+		value := split[1]
+		expectedMap[key] = value
+	}
+
+	for key, actualValue := range actualMap {
+		expectedValue, ok := expectedMap[key]
+		if !ok || actualValue != expectedValue {
+			t.Fatalf("Mismatch for key %s: actual: %s, expected: %s", key, actualValue, expectedValue)
+		}
+	}
+}
+
+func createTempFileWithContent(t *testing.T) *os.File {
+	content := []byte("MYSQL_PASSWORD=3xtr3ms3cr3t\nAWS_SECRET_ACCESS_KEY=s3cr3t\nAWS_ACCESS_KEY_ID=secretId\n")
+	tmpfile, err := os.CreateTemp("", "secrets-*.txt")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = tmpfile.Write(content)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = tmpfile.Close()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	return tmpfile
+}
+
+func setupEnvs(t *testing.T, tmpfile *os.File) {
+	err := os.Setenv("PROVIDER", "file")
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = os.Setenv("SECRETS_FILE_PATH", tmpfile.Name())
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = os.Setenv("MYSQL_PASSWORD", "file:secret")
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = os.Setenv("AWS_SECRET_ACCESS_KEY", "file:secret")
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = os.Setenv("AWS_ACCESS_KEY_ID", "file:secret")
+	if err != nil {
+		t.Fatal(err)
+	}
+}