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|
package main
import (
"archive/zip"
"bytes"
"encoding/base64"
"io"
"os"
"sync"
"testing"
)
func TestRun(t *testing.T) {
tests := createTestCases()
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
runTest(t, tt)
})
}
}
func createTestCases() map[string]struct {
archiveContent string
fileName string
expectedOutput string
expectedError string
missingArchiveEnv bool
missingEncodingEnv bool
overrideEncodedFileName string
} {
return map[string]struct {
archiveContent string
fileName string
expectedOutput string
expectedError string
missingArchiveEnv bool
missingEncodingEnv bool
overrideEncodedFileName string
}{
"successful case": {
archiveContent: "sample content",
fileName: "testfile.txt",
expectedOutput: "14\nsample content",
expectedError: "",
},
"missing archive path": {
archiveContent: "sample content",
fileName: "testfile.txt",
expectedOutput: "",
expectedError: "usage: gitlab-zip-cat\nEnv: ARCHIVE_PATH=https://path.to/archive.zip or /path/to/archive.zip\nEnv: ENCODED_FILE_NAME=base64-encoded-file-name",
missingArchiveEnv: true,
},
"missing encoding name": {
archiveContent: "sample content",
fileName: "testfile.txt",
expectedOutput: "",
expectedError: "usage: gitlab-zip-cat\nEnv: ARCHIVE_PATH=https://path.to/archive.zip or /path/to/archive.zip\nEnv: ENCODED_FILE_NAME=base64-encoded-file-name",
missingEncodingEnv: true,
},
}
}
func runTest(t *testing.T, tt struct {
archiveContent string
fileName string
expectedOutput string
expectedError string
missingArchiveEnv bool
missingEncodingEnv bool
overrideEncodedFileName string
}) {
archivePath := createTempZipWithFile(tt.fileName, tt.archiveContent)
encodedFileName := base64.StdEncoding.EncodeToString([]byte(tt.fileName))
setupEnvironment(tt.missingArchiveEnv, tt.missingEncodingEnv, archivePath, tt.overrideEncodedFileName, encodedFileName)
stdoutBuf, _, err := captureOutput(run)
verifyResults(t, tt.expectedError, err, tt.expectedOutput, stdoutBuf)
unsetEnvironment()
}
func setupEnvironment(missingArchiveEnv, missingEncodingEnv bool, archivePath, overrideEncodedFileName, encodedFileName string) {
if !missingArchiveEnv {
os.Setenv("ARCHIVE_PATH", archivePath)
}
if !missingEncodingEnv {
if overrideEncodedFileName != "" {
encodedFileName = base64.StdEncoding.EncodeToString([]byte(overrideEncodedFileName))
}
os.Setenv("ENCODED_FILE_NAME", encodedFileName)
}
os.Args = []string{"gitlab-zip-cat"}
}
func captureOutput(fn func() (error, error)) (stdoutBuf, stderrBuf bytes.Buffer, err error) {
stdoutPipe, stdoutWriter, _ := os.Pipe()
stderrPipe, stderrWriter, _ := os.Pipe()
defer stdoutPipe.Close()
defer stderrPipe.Close()
oldStdout := os.Stdout
oldStderr := os.Stderr
os.Stdout = stdoutWriter
os.Stderr = stderrWriter
defer func() {
os.Stdout = oldStdout
os.Stderr = oldStderr
}()
wg := sync.WaitGroup{}
wg.Add(2)
go func() {
defer wg.Done()
io.Copy(&stdoutBuf, stdoutPipe)
}()
go func() {
defer wg.Done()
io.Copy(&stderrBuf, stderrPipe)
}()
err, _ = fn()
stdoutWriter.Close()
stderrWriter.Close()
wg.Wait()
return stdoutBuf, stderrBuf, err
}
func verifyResults(t *testing.T, expectedError string, err error, expectedOutput string, stdoutBuf bytes.Buffer) {
if expectedError == "" && err != nil {
t.Fatalf("Expected no error, got %v", err)
}
if got := stdoutBuf.String(); got != expectedOutput {
t.Errorf("Expected %q, got %q", expectedOutput, got)
}
}
func unsetEnvironment() {
os.Unsetenv("ARCHIVE_PATH")
os.Unsetenv("ENCODED_FILE_NAME")
}
func createTempZipWithFile(fileName, content string) string {
zipFile, err := os.CreateTemp("", "test-archive-*.zip")
if err != nil {
panic(err)
}
defer zipFile.Close()
archive := zip.NewWriter(zipFile)
defer archive.Close()
w, err := archive.Create(fileName)
if err != nil {
panic(err)
}
_, err = io.Copy(w, bytes.NewReader([]byte(content)))
if err != nil {
panic(err)
}
return zipFile.Name()
}
|
