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appcmdtesting.go
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appcmdtesting.go
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// Copyright 2020-2022 Buf Technologies, Inc.
//
// 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 appcmdtesting
import (
"bytes"
"context"
"io"
"testing"
"github.com/bufbuild/buf/private/pkg/app"
"github.com/bufbuild/buf/private/pkg/app/appcmd"
"github.com/bufbuild/buf/private/pkg/stringutil"
"github.com/stretchr/testify/require"
)
// RunCommandSuccessStdout runs the command and makes sure it was successful, and compares the stdout output.
func RunCommandSuccessStdout(
t *testing.T,
newCommand func(use string) *appcmd.Command,
expectedStdout string,
newEnv func(use string) map[string]string,
stdin io.Reader,
args ...string,
) {
RunCommandExitCodeStdout(t, newCommand, 0, expectedStdout, newEnv, stdin, args...)
}
// RunCommandExitCodeStdout runs the command and compares the exit code and stdout output.
func RunCommandExitCodeStdout(
t *testing.T,
newCommand func(use string) *appcmd.Command,
expectedExitCode int,
expectedStdout string,
newEnv func(use string) map[string]string,
stdin io.Reader,
args ...string,
) {
stdout := bytes.NewBuffer(nil)
stderr := bytes.NewBuffer(nil)
RunCommandExitCode(t, newCommand, expectedExitCode, newEnv, stdin, stdout, stderr, args...)
require.Equal(t, stringutil.TrimLines(expectedStdout), stringutil.TrimLines(stdout.String()))
}
// RunCommandExitCodeStderr runs the command and compares the exit code and stderr output.
func RunCommandExitCodeStderr(
t *testing.T,
newCommand func(use string) *appcmd.Command,
expectedExitCode int,
expectedStderr string,
newEnv func(use string) map[string]string,
stdin io.Reader,
args ...string,
) {
stdout := bytes.NewBuffer(nil)
stderr := bytes.NewBuffer(nil)
RunCommandExitCode(t, newCommand, expectedExitCode, newEnv, stdin, stdout, stderr, args...)
require.Equal(t, stringutil.TrimLines(expectedStderr), stringutil.TrimLines(stderr.String()))
}
// RunCommandExitCodeStdoutStderr runs the command and compares the exit code, stdout, and stderr output.
func RunCommandExitCodeStdoutStderr(
t *testing.T,
newCommand func(use string) *appcmd.Command,
expectedExitCode int,
expectedStdout string,
expectedStderr string,
newEnv func(use string) map[string]string,
stdin io.Reader,
args ...string,
) {
stdout := bytes.NewBuffer(nil)
stderr := bytes.NewBuffer(nil)
RunCommandExitCode(t, newCommand, expectedExitCode, newEnv, stdin, stdout, stderr, args...)
require.Equal(t, stringutil.TrimLines(expectedStdout), stringutil.TrimLines(stdout.String()))
require.Equal(t, stringutil.TrimLines(expectedStderr), stringutil.TrimLines(stderr.String()))
}
// RunCommandSuccess runs the command and makes sure it was successful.
func RunCommandSuccess(
t *testing.T,
newCommand func(use string) *appcmd.Command,
newEnv func(use string) map[string]string,
stdin io.Reader,
stdout io.Writer,
args ...string,
) {
stderr := bytes.NewBuffer(nil)
RunCommandExitCode(t, newCommand, 0, newEnv, stdin, stdout, stderr, args...)
}
// RunCommandExitCode runs the command and compares the exit code.
func RunCommandExitCode(
t *testing.T,
newCommand func(use string) *appcmd.Command,
expectedExitCode int,
newEnv func(use string) map[string]string,
stdin io.Reader,
stdout io.Writer,
stderr io.Writer,
args ...string,
) {
// make the use something different than the actual command
// to make sure that all code is binary-name-agnostic.
use := "test"
stdoutCopy := bytes.NewBuffer(nil)
if stdout == nil {
stdout = stdoutCopy
} else {
stdout = io.MultiWriter(stdout, stdoutCopy)
}
stderrCopy := bytes.NewBuffer(nil)
if stderr == nil {
stderr = stderrCopy
} else {
stderr = io.MultiWriter(stderr, stderrCopy)
}
var env map[string]string
if newEnv != nil {
env = newEnv(use)
}
exitCode := app.GetExitCode(
appcmd.Run(
context.Background(),
app.NewContainer(
env,
stdin,
stdout,
stderr,
append([]string{"test"}, args...)...,
),
newCommand(use),
),
)
require.Equal(
t,
expectedExitCode,
exitCode,
stringutil.TrimLines(stdoutCopy.String())+"\n"+stringutil.TrimLines(stderrCopy.String()),
)
}