You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main_test.go
    path of file: ./repos/terraform
    
    the code of the file until where you have to start completion: // Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1

package main

import (
	"fmt"
	"os"
	"reflect"
	"testing"

	"github.com/hashicorp/cli"
)

func TestMain_cliArgsFromEnv(t *testing.T) {
	// Set up the state. This test really messes with the environment and
	// global state so we set things up to be restored.

	// Restore original CLI args
	oldArgs := os.Args
	defer func() { os.Args = oldArgs }()

	// Set up test command and restore that
	Commands = make(map[string]cli.CommandFactory)
	defer func() {
		Commands = nil
	}()
	testCommandName := "unit-test-cli-args"
	testCommand := &testCommandCLI{}
	Commands[testCommandName] = func() (cli.Command, error) {
		return testCommand, nil
	}

	cases := []struct {
		Name     string
		Args     []string
		Value    string
		Expected []string
		Err      bool
	}{
		{
			"no env",
			[]string{testCommandName, "foo", "bar"},
			"",
			[]string{"foo", "bar"},
			false,
		},

		{
			"both env var and CLI",
			[]string{testCommandName, "foo", "bar"},
			"-foo baz",
			[]string{"-foo", "baz", "foo", "bar"},
			false,
		},

		{
			"only env var",
			[]string{testCommandName},
			"-foo bar",
			[]string{"-foo", "bar"},
			false,
		},

		{
			"cli string has blank values",
			[]string{testCommandName, "bar", "", "baz"},
			"-foo bar",
			[]string{"-foo", "bar", "bar", "", "baz"},
			false,
		},

		{
			"cli string has blank values before the command",
			[]string{"", testCommandName, "bar"},
			"-foo bar",
			[]string{"-foo", "bar", "bar"},
			false,
		},

		{
			// this should fail gracefully, this is just testing
			// that we don't panic with our slice arithmetic
			"no command",
			[]string{},
			"-foo bar",
			nil,
			true,
		},

		{
			"single quoted strings",
			[]string{testCommandName, "foo"},
			"-foo 'bar baz'",
			[]string{"-foo", "bar baz", "foo"},
			false,
		},

		{
			"double quoted strings",
			[]string{testCommandName, "foo"},
			`-foo "bar baz"`,
			[]string{"-foo", "bar baz", "foo"},
			false,
		},

	
    
func TestMain_cliArgsFromEnv(t *testing.T) {
	// Set up the state. This test really messes with the environment and
	// global state so we set things up to be restored.

	// Restore original CLI args
	oldArgs := os.Args
	defer func() { os.Args = oldArgs }()

	// Set up test command and restore that
	Commands = make(map[string]cli.CommandFactory)
	defer func() {
		Commands = nil
	}()
	testCommandName := "unit-test-cli-args"
	testCommand := &testCommandCLI{}
	Commands[testCommandName] = func() (cli.Command, error) {
		return testCommand, nil
	}

	cases := []struct {
		Name     string
		Args     []string
		Value    string
		Expected []string
		Err      bool
	}{
		{
			"no env",
			[]string{testCommandName, "foo", "bar"},
			"",
			[]string{"foo", "bar"},
			false,
		},

		{
			"both env var and CLI",
			[]string{testCommandName, "foo", "bar"},
			"-foo baz",
			[]string{"-foo", "baz", "foo", "bar"},
			false,
		},

		{
			"only env var",
			[]string{testCommandName},
			"-foo bar",
			[]string{"-foo", "bar"},
			false,
		},

		{
			"cli string has blank values",
			[]string{testCommandName, "bar", "", "baz"},
			"-foo bar",
			[]string{"-foo", "bar", "bar", "", "baz"},
			false,
		},

		{
			"cli string has blank values before the command",
			[]string{"", testCommandName, "bar"},
			"-foo bar",
			[]string{"-foo", "bar", "bar"},
			false,
		},

		{
			// this should fail gracefully, this is just testing
			// that we don't panic with our slice arithmetic
			"no command",
			[]string{},
			"-foo bar",
			nil,
			true,
		},

		{
			"single quoted strings",
			[]string{testCommandName, "foo"},
			"-foo 'bar baz'",
			[]string{"-foo", "bar baz", "foo"},
			false,
		},

		{
			"double quoted strings",
			[]string{testCommandName, "foo"},
			`-foo "bar baz"`,
			[]string{"-foo", "bar baz", "foo"},
			false,
		},

		{
			"double quoted single quoted strings",
			[]string{testCommandName, "foo"},
			`-foo "'bar baz'"`,
			[]string{"-foo", "'bar baz'", "foo"},
			false,
		},
	}

	for i, tc := range cases {
		t.Run(fmt.Sprintf("%d-%s", i, tc.Name), func(t *testing.T) {
			os.Unsetenv(EnvCLI)
			defer os.Unsetenv(EnvCLI)

			// Set the env var value
			if tc.Value != "" {
				if err := os.Setenv(EnvCLI, tc.Value); err != nil {
					t.Fatalf("err: %s", err)
				}
			}

			// Set up the args
			args := make([]string, len(tc.Args)+1)
			args[0] = oldArgs[0] // process name
			copy(args[1:], tc.Args)

			// Run it!
			os.Args = args
			testCommand.Args = nil
			exit := realMain()
			if (exit != 0) != tc.Err {
				t.Fatalf("bad: %d", exit)
			}
			if tc.Err {
				return
			}

			// Verify
			if !reflect.DeepEqual(testCommand.Args, tc.Expected) {
				t.Fatalf("expected args %#v but got %#v", tc.Expected, testCommand.Args)
			}
		})
	}
}