databricks-cli/libs/python/pythontest/pythontest.go

108 lines
2.5 KiB
Go

package pythontest
import (
"context"
"errors"
"fmt"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"testing"
"github.com/databricks/cli/internal/testutil"
"github.com/stretchr/testify/require"
)
type VenvOpts struct {
// input
PythonVersion string
skipVersionCheck bool
// input/output
Dir string
Name string
// output:
// Absolute path to venv
EnvPath string
// Absolute path to venv/bin or venv/Scripts, depending on OS
BinPath string
// Absolute path to python binary
PythonExe string
}
func CreatePythonEnv(opts *VenvOpts) error {
if opts == nil || opts.PythonVersion == "" {
return errors.New("PythonVersion must be provided")
}
if opts.Name == "" {
opts.Name = testutil.RandomName("test-venv-")
}
cmd := exec.Command("uv", "venv", opts.Name, "--python", opts.PythonVersion, "--seed", "-q")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Dir = opts.Dir
err := cmd.Run()
if err != nil {
return err
}
opts.EnvPath, err = filepath.Abs(filepath.Join(opts.Dir, opts.Name))
if err != nil {
return err
}
_, err = os.Stat(opts.EnvPath)
if err != nil {
return fmt.Errorf("cannot stat EnvPath %s: %s", opts.EnvPath, err)
}
if runtime.GOOS == "windows" {
// https://github.com/pypa/virtualenv/commit/993ba1316a83b760370f5a3872b3f5ef4dd904c1
opts.BinPath = filepath.Join(opts.EnvPath, "Scripts")
opts.PythonExe = filepath.Join(opts.BinPath, "python.exe")
} else {
opts.BinPath = filepath.Join(opts.EnvPath, "bin")
opts.PythonExe = filepath.Join(opts.BinPath, "python3")
}
_, err = os.Stat(opts.BinPath)
if err != nil {
return fmt.Errorf("cannot stat BinPath %s: %s", opts.BinPath, err)
}
_, err = os.Stat(opts.PythonExe)
if err != nil {
return fmt.Errorf("cannot stat PythonExe %s: %s", opts.PythonExe, err)
}
if !opts.skipVersionCheck {
cmd := exec.Command(opts.PythonExe, "--version")
out, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("Failed to run %s --version: %s", opts.PythonExe, err)
}
outString := string(out)
expectVersion := "Python " + opts.PythonVersion
if !strings.HasPrefix(outString, expectVersion) {
return fmt.Errorf("Unexpected output from %s --version: %v (expected %v)", opts.PythonExe, outString, expectVersion)
}
}
return nil
}
func RequireActivatedPythonEnv(t *testing.T, ctx context.Context, opts *VenvOpts) {
err := CreatePythonEnv(opts)
require.NoError(t, err)
require.DirExists(t, opts.BinPath)
newPath := fmt.Sprintf("%s%c%s", opts.BinPath, os.PathListSeparator, os.Getenv("PATH"))
t.Setenv("PATH", newPath)
}