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diff_test.go
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diff_test.go
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//nolint:goconst
package display
import (
"bytes"
"encoding/json"
"fmt"
"io"
"os"
"path/filepath"
"testing"
"github.com/pulumi/pulumi/pkg/v3/engine"
"github.com/pulumi/pulumi/sdk/v3/go/common/apitype"
"github.com/pulumi/pulumi/sdk/v3/go/common/diag/colors"
"github.com/pulumi/pulumi/sdk/v3/go/common/util/cmdutil"
"github.com/pulumi/pulumi/sdk/v3/go/common/util/contract"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func loadEvents(path string) (events []engine.Event, err error) {
f, err := os.Open(path)
if err != nil {
return nil, fmt.Errorf("opening '%v': %w", path, err)
}
defer contract.IgnoreClose(f)
dec := json.NewDecoder(f)
for {
var jsonEvent apitype.EngineEvent
if err = dec.Decode(&jsonEvent); err != nil {
if err == io.EOF {
break
}
return nil, fmt.Errorf("decoding event %d: %w", len(events), err)
}
event, err := ConvertJSONEvent(jsonEvent)
if err != nil {
return nil, fmt.Errorf("converting event %d: %w", len(events), err)
}
events = append(events, event)
}
// If there are no events or if the event stream does not terminate with a cancel event,
// synthesize one here.
if len(events) == 0 || events[len(events)-1].Type != engine.CancelEvent {
events = append(events, engine.NewEvent(engine.CancelEvent, nil))
}
return events, nil
}
func testDiffEvents(t *testing.T, path string, accept bool, truncateOutput bool) {
events, err := loadEvents(path)
require.NoError(t, err)
var expectedStdout []byte
var expectedStderr []byte
if !accept {
expectedStdout, err = os.ReadFile(path + ".stdout.txt")
require.NoError(t, err)
expectedStderr, err = os.ReadFile(path + ".stderr.txt")
require.NoError(t, err)
}
eventChannel, doneChannel := make(chan engine.Event), make(chan bool)
var stdout bytes.Buffer
var stderr bytes.Buffer
go ShowDiffEvents("test", eventChannel, doneChannel, Options{
Color: colors.Raw,
ShowConfig: true,
ShowReplacementSteps: true,
ShowSameResources: true,
ShowReads: true,
TruncateOutput: truncateOutput,
Stdout: &stdout,
Stderr: &stderr,
})
for _, e := range events {
eventChannel <- e
}
<-doneChannel
if !accept {
assert.Equal(t, string(expectedStdout), string(stdout.Bytes()))
assert.Equal(t, string(expectedStderr), string(stderr.Bytes()))
} else {
err = os.WriteFile(path+".stdout.txt", stdout.Bytes(), 0600)
require.NoError(t, err)
err = os.WriteFile(path+".stderr.txt", stderr.Bytes(), 0600)
require.NoError(t, err)
}
}
func TestDiffEvents(t *testing.T) {
t.Parallel()
accept := cmdutil.IsTruthy(os.Getenv("PULUMI_ACCEPT"))
entries, err := os.ReadDir("testdata/not-truncated")
require.NoError(t, err)
//nolint:paralleltest
for _, entry := range entries {
if entry.IsDir() || filepath.Ext(entry.Name()) != ".json" {
continue
}
path := filepath.Join("testdata/not-truncated", entry.Name())
t.Run(entry.Name(), func(t *testing.T) {
t.Parallel()
testDiffEvents(t, path, accept, false)
})
}
entries, err = os.ReadDir("testdata/truncated")
require.NoError(t, err)
//nolint:paralleltest
for _, entry := range entries {
if entry.IsDir() || filepath.Ext(entry.Name()) != ".json" {
continue
}
path := filepath.Join("testdata/truncated", entry.Name())
t.Run(entry.Name(), func(t *testing.T) {
t.Parallel()
testDiffEvents(t, path, accept, true)
})
}
}