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Vendor gotestyourself

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and remove testify and spew

Signed-off-by: Daniel Nephin <dnephin@gmail.com>
This commit is contained in:
Daniel Nephin
2018-01-11 16:11:20 -05:00
parent 5471ba9445
commit 1719a6e17a
52 changed files with 4101 additions and 5221 deletions
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202
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Apache License
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http://www.apache.org/licenses/
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# Go Test Yourself
A collection of packages compatible with `go test` to support common testing
patterns.
[![GoDoc](https://godoc.org/github.com/gotestyourself/gotestyourself?status.svg)](https://godoc.org/github.com/gotestyourself/gotestyourself)
[![CircleCI](https://circleci.com/gh/gotestyourself/gotestyourself/tree/master.svg?style=shield)](https://circleci.com/gh/gotestyourself/gotestyourself/tree/master)
[![Go Reportcard](https://goreportcard.com/badge/github.com/gotestyourself/gotestyourself)](https://goreportcard.com/report/github.com/gotestyourself/gotestyourself)
## Packages
* [assert](http://godoc.org/github.com/gotestyourself/gotestyourself/assert) -
compare values and fail the test when the comparison fails
* [env](http://godoc.org/github.com/gotestyourself/gotestyourself/env) -
test code that uses environment variables
* [fs](http://godoc.org/github.com/gotestyourself/gotestyourself/fs) -
create test files and directories
* [golden](http://godoc.org/github.com/gotestyourself/gotestyourself/golden) -
compare large multi-line strings
* [icmd](http://godoc.org/github.com/gotestyourself/gotestyourself/icmd) -
execute binaries and test the output
* [poll](http://godoc.org/github.com/gotestyourself/gotestyourself/poll) -
test asynchronous code by polling until a desired state is reached
* [skip](http://godoc.org/github.com/gotestyourself/gotestyourself/skip) -
skip tests based on conditions
* [testsum](http://godoc.org/github.com/gotestyourself/gotestyourself/testsum) -
a program to summarize `go test` output and test failures
## Related
* [maxbrunsfeld/counterfeiter](https://github.com/maxbrunsfeld/counterfeiter) - generate fakes for interfaces
* [jonboulle/clockwork](https://github.com/jonboulle/clockwork) - a fake clock for testing code that uses `time`

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/*Package assert provides assertions for comparing expected values to actual
values. When an assertion fails a helpful error message is printed.
Assert and Check
Assert() and Check() both accept a Comparison, and fail the test when the
comparison fails. The one difference is that Assert() will end the test execution
immediately (using t.FailNow()) whereas Check() will fail the test (using t.Fail()),
return the value of the comparison, then proceed with the rest of the test case.
Example Usage
The example below shows assert used with some common types.
import (
"testing"
"github.com/gotestyourself/gotestyourself/assert"
is "github.com/gotestyourself/gotestyourself/assert/cmp"
)
func TestEverything(t *testing.T) {
// booleans
assert.Assert(t, ok)
assert.Assert(t, !missing)
// primitives
assert.Equal(t, count, 1)
assert.Equal(t, msg, "the message")
assert.Assert(t, total != 10) // NotEqual
// errors
assert.NilError(t, closer.Close())
assert.Assert(t, is.Error(err, "the exact error message"))
assert.Assert(t, is.ErrorContains(err, "includes this"))
assert.Assert(t, os.IsNotExist(err), "got %+v", err)
// complex types
assert.Assert(t, is.Len(items, 3))
assert.Assert(t, len(sequence) != 0) // NotEmpty
assert.Assert(t, is.Contains(mapping, "key"))
assert.Assert(t, is.DeepEqual(result, myStruct{Name: "title"}))
// pointers and interface
assert.Assert(t, is.Nil(ref))
assert.Assert(t, ref != nil) // NotNil
}
Comparisons
https://godoc.org/github.com/gotestyourself/gotestyourself/assert/cmp provides
many common comparisons. Additional comparisons can be written to compare
values in other ways.
Below is an example of a custom comparison using a regex pattern:
func RegexP(value string, pattern string) func() (bool, string) {
return func() (bool, string) {
re := regexp.MustCompile(pattern)
msg := fmt.Sprintf("%q did not match pattern %q", value, pattern)
return re.MatchString(value), msg
}
}
*/
package assert
import (
"fmt"
"go/ast"
"go/token"
"github.com/gotestyourself/gotestyourself/assert/cmp"
"github.com/gotestyourself/gotestyourself/internal/format"
"github.com/gotestyourself/gotestyourself/internal/source"
)
// BoolOrComparison can be a bool, or cmp.Comparison. See Assert() for usage.
type BoolOrComparison interface{}
// TestingT is the subset of testing.T used by the assert package.
type TestingT interface {
FailNow()
Fail()
Log(args ...interface{})
}
type helperT interface {
Helper()
}
const failureMessage = "assertion failed: "
// nolint: gocyclo
func assert(
t TestingT,
failer func(),
argsFilter astExprListFilter,
comparison BoolOrComparison,
msgAndArgs ...interface{},
) bool {
if ht, ok := t.(helperT); ok {
ht.Helper()
}
var success bool
switch check := comparison.(type) {
case bool:
if check {
return true
}
logFailureFromBool(t, msgAndArgs...)
// Undocumented legacy comparison without Result type
case func() (success bool, message string):
success = runCompareFunc(t, check, msgAndArgs...)
case nil:
return true
case error:
msg := "error is not nil: "
t.Log(format.WithCustomMessage(failureMessage+msg+check.Error(), msgAndArgs...))
case cmp.Comparison:
success = runComparison(t, argsFilter, check, msgAndArgs...)
case func() cmp.Result:
success = runComparison(t, argsFilter, check, msgAndArgs...)
default:
t.Log(fmt.Sprintf("invalid Comparison: %v (%T)", check, check))
}
if success {
return true
}
failer()
return false
}
func runCompareFunc(
t TestingT,
f func() (success bool, message string),
msgAndArgs ...interface{},
) bool {
if ht, ok := t.(helperT); ok {
ht.Helper()
}
if success, message := f(); !success {
t.Log(format.WithCustomMessage(failureMessage+message, msgAndArgs...))
return false
}
return true
}
func logFailureFromBool(t TestingT, msgAndArgs ...interface{}) {
const stackIndex = 3 // Assert()/Check(), assert(), formatFailureFromBool()
const comparisonArgPos = 1
args, err := source.CallExprArgs(stackIndex)
if err != nil {
t.Log(err.Error())
return
}
msg, err := boolFailureMessage(args[comparisonArgPos])
if err != nil {
t.Log(err.Error())
msg = "expression is false"
}
t.Log(format.WithCustomMessage(failureMessage+msg, msgAndArgs...))
}
func boolFailureMessage(expr ast.Expr) (string, error) {
if binaryExpr, ok := expr.(*ast.BinaryExpr); ok && binaryExpr.Op == token.NEQ {
x, err := source.FormatNode(binaryExpr.X)
if err != nil {
return "", err
}
y, err := source.FormatNode(binaryExpr.Y)
if err != nil {
return "", err
}
return x + " is " + y, nil
}
if unaryExpr, ok := expr.(*ast.UnaryExpr); ok && unaryExpr.Op == token.NOT {
x, err := source.FormatNode(unaryExpr.X)
if err != nil {
return "", err
}
return x + " is true", nil
}
formatted, err := source.FormatNode(expr)
if err != nil {
return "", err
}
return "expression is false: " + formatted, nil
}
// Assert performs a comparison. If the comparison fails the test is marked as
// failed, a failure message is logged, and execution is stopped immediately.
//
// The comparison argument may be one of three types: bool, cmp.Comparison or
// error.
// When called with a bool the failure message will contain the literal source
// code of the expression.
// When called with a cmp.Comparison the comparison is responsible for producing
// a helpful failure message.
// When called with an error a nil value is considered success. A non-nil error
// is a failure, and Error() is used as the failure message.
func Assert(t TestingT, comparison BoolOrComparison, msgAndArgs ...interface{}) {
if ht, ok := t.(helperT); ok {
ht.Helper()
}
assert(t, t.FailNow, filterExprArgsFromComparison, comparison, msgAndArgs...)
}
// Check performs a comparison. If the comparison fails the test is marked as
// failed, a failure message is logged, and Check returns false. Otherwise returns
// true.
//
// See Assert for details about the comparison arg and failure messages.
func Check(t TestingT, comparison BoolOrComparison, msgAndArgs ...interface{}) bool {
if ht, ok := t.(helperT); ok {
ht.Helper()
}
return assert(t, t.Fail, filterExprArgsFromComparison, comparison, msgAndArgs...)
}
// NilError fails the test immediately if err is not nil.
// This is equivalent to Assert(t, err)
func NilError(t TestingT, err error, msgAndArgs ...interface{}) {
if ht, ok := t.(helperT); ok {
ht.Helper()
}
assert(t, t.FailNow, filterExprExcludeFirst, err, msgAndArgs...)
}
// Equal uses the == operator to assert two values are equal and fails the test
// if they are not equal. This is equivalent to Assert(t, cmp.Equal(x, y)).
func Equal(t TestingT, x, y interface{}, msgAndArgs ...interface{}) {
if ht, ok := t.(helperT); ok {
ht.Helper()
}
assert(t, t.FailNow, filterExprExcludeFirst, cmp.Equal(x, y), msgAndArgs...)
}

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/*Package cmp provides Comparisons for Assert and Check*/
package cmp
import (
"fmt"
"reflect"
"strings"
"github.com/google/go-cmp/cmp"
"github.com/pmezard/go-difflib/difflib"
)
// Comparison is a function which compares values and returns ResultSuccess if
// the actual value matches the expected value. If the values do not match the
// Result will contain a message about why it failed.
type Comparison func() Result
// DeepEqual compares two values using https://godoc.org/github.com/google/go-cmp/cmp
// and succeeds if the values are equal.
//
// The comparison can be customized using comparison Options.
func DeepEqual(x, y interface{}, opts ...cmp.Option) Comparison {
return func() (result Result) {
defer func() {
if panicmsg, handled := handleCmpPanic(recover()); handled {
result = ResultFailure(panicmsg)
}
}()
diff := cmp.Diff(x, y, opts...)
return toResult(diff == "", "\n"+diff)
}
}
func handleCmpPanic(r interface{}) (string, bool) {
if r == nil {
return "", false
}
panicmsg, ok := r.(string)
if !ok {
panic(r)
}
switch {
case strings.HasPrefix(panicmsg, "cannot handle unexported field"):
return panicmsg, true
}
panic(r)
}
func toResult(success bool, msg string) Result {
if success {
return ResultSuccess
}
return ResultFailure(msg)
}
// Equal succeeds if x == y.
func Equal(x, y interface{}) Comparison {
return func() Result {
switch {
case x == y:
return ResultSuccess
case isMultiLineStringCompare(x, y):
return multiLineStringDiffResult(x.(string), y.(string))
}
return ResultFailureTemplate(`
{{- .Data.x}} (
{{- with callArg 0 }}{{ formatNode . }} {{end -}}
{{- printf "%T" .Data.x -}}
) != {{ .Data.y}} (
{{- with callArg 1 }}{{ formatNode . }} {{end -}}
{{- printf "%T" .Data.y -}}
)`,
map[string]interface{}{"x": x, "y": y})
}
}
func isMultiLineStringCompare(x, y interface{}) bool {
strX, ok := x.(string)
if !ok {
return false
}
strY, ok := y.(string)
if !ok {
return false
}
return strings.Contains(strX, "\n") || strings.Contains(strY, "\n")
}
func multiLineStringDiffResult(x, y string) Result {
diff, err := difflib.GetUnifiedDiffString(difflib.UnifiedDiff{
A: difflib.SplitLines(x),
B: difflib.SplitLines(y),
Context: 3,
})
if err != nil {
return ResultFailure(fmt.Sprintf("failed to diff: %s", err))
}
return ResultFailureTemplate(`
--- {{ with callArg 0 }}{{ formatNode . }}{{else}}←{{end}}
+++ {{ with callArg 1 }}{{ formatNode . }}{{else}}→{{end}}
{{ .Data.diff }}`,
map[string]interface{}{"diff": diff})
}
// Len succeeds if the sequence has the expected length.
func Len(seq interface{}, expected int) Comparison {
return func() (result Result) {
defer func() {
if e := recover(); e != nil {
result = ResultFailure(fmt.Sprintf("type %T does not have a length", seq))
}
}()
value := reflect.ValueOf(seq)
length := value.Len()
if length == expected {
return ResultSuccess
}
msg := fmt.Sprintf("expected %s (length %d) to have length %d", seq, length, expected)
return ResultFailure(msg)
}
}
// Contains succeeds if item is in collection. Collection may be a string, map,
// slice, or array.
//
// If collection is a string, item must also be a string, and is compared using
// strings.Contains().
// If collection is a Map, contains will succeed if item is a key in the map.
// If collection is a slice or array, item is compared to each item in the
// sequence using reflect.DeepEqual().
func Contains(collection interface{}, item interface{}) Comparison {
return func() Result {
colValue := reflect.ValueOf(collection)
if !colValue.IsValid() {
return ResultFailure(fmt.Sprintf("nil does not contain items"))
}
msg := fmt.Sprintf("%v does not contain %v", collection, item)
itemValue := reflect.ValueOf(item)
switch colValue.Type().Kind() {
case reflect.String:
if itemValue.Type().Kind() != reflect.String {
return ResultFailure("string may only contain strings")
}
return toResult(
strings.Contains(colValue.String(), itemValue.String()),
fmt.Sprintf("string %q does not contain %q", collection, item))
case reflect.Map:
if itemValue.Type() != colValue.Type().Key() {
return ResultFailure(fmt.Sprintf(
"%v can not contain a %v key", colValue.Type(), itemValue.Type()))
}
return toResult(colValue.MapIndex(itemValue).IsValid(), msg)
case reflect.Slice, reflect.Array:
for i := 0; i < colValue.Len(); i++ {
if reflect.DeepEqual(colValue.Index(i).Interface(), item) {
return ResultSuccess
}
}
return ResultFailure(msg)
default:
return ResultFailure(fmt.Sprintf("type %T does not contain items", collection))
}
}
}
// Panics succeeds if f() panics.
func Panics(f func()) Comparison {
return func() (result Result) {
defer func() {
if err := recover(); err != nil {
result = ResultSuccess
}
}()
f()
return ResultFailure("did not panic")
}
}
// Error succeeds if err is a non-nil error, and the error message equals the
// expected message.
func Error(err error, message string) Comparison {
return func() Result {
switch {
case err == nil:
return ResultFailure("expected an error, got nil")
case err.Error() != message:
return ResultFailure(fmt.Sprintf(
"expected error %q, got %+v", message, err))
}
return ResultSuccess
}
}
// ErrorContains succeeds if err is a non-nil error, and the error message contains
// the expected substring.
func ErrorContains(err error, substring string) Comparison {
return func() Result {
switch {
case err == nil:
return ResultFailure("expected an error, got nil")
case !strings.Contains(err.Error(), substring):
return ResultFailure(fmt.Sprintf(
"expected error to contain %q, got %+v", substring, err))
}
return ResultSuccess
}
}
// Nil succeeds if obj is a nil interface, pointer, or function.
//
// Use NilError() for comparing errors. Use Len(obj, 0) for comparing slices,
// maps, and channels.
func Nil(obj interface{}) Comparison {
msgFunc := func(value reflect.Value) string {
return fmt.Sprintf("%v (type %s) is not nil", reflect.Indirect(value), value.Type())
}
return isNil(obj, msgFunc)
}
func isNil(obj interface{}, msgFunc func(reflect.Value) string) Comparison {
return func() Result {
if obj == nil {
return ResultSuccess
}
value := reflect.ValueOf(obj)
kind := value.Type().Kind()
if kind >= reflect.Chan && kind <= reflect.Slice {
if value.IsNil() {
return ResultSuccess
}
return ResultFailure(msgFunc(value))
}
return ResultFailure(fmt.Sprintf("%v (type %s) can not be nil", value, value.Type()))
}
}

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package cmp
import (
"bytes"
"fmt"
"go/ast"
"text/template"
"github.com/gotestyourself/gotestyourself/internal/source"
)
// Result of a Comparison.
type Result interface {
Success() bool
}
type result struct {
success bool
message string
}
func (r result) Success() bool {
return r.success
}
func (r result) FailureMessage() string {
return r.message
}
// ResultSuccess is a constant which is returned by a ComparisonWithResult to
// indicate success.
var ResultSuccess = result{success: true}
// ResultFailure returns a failed Result with a failure message.
func ResultFailure(message string) Result {
return result{message: message}
}
// ResultFromError returns ResultSuccess if err is nil. Otherwise ResultFailure
// is returned with the error message as the failure message.
func ResultFromError(err error) Result {
if err == nil {
return ResultSuccess
}
return ResultFailure(err.Error())
}
type templatedResult struct {
success bool
template string
data map[string]interface{}
}
func (r templatedResult) Success() bool {
return r.success
}
func (r templatedResult) FailureMessage(args []ast.Expr) string {
msg, err := renderMessage(r, args)
if err != nil {
return fmt.Sprintf("failed to render failure message: %s", err)
}
return msg
}
// ResultFailureTemplate returns a Result with a template string and data which
// can be used to format a failure message. The template may access data from .Data,
// the comparison args with the callArg function, and the formatNode function may
// be used to format the call args.
func ResultFailureTemplate(template string, data map[string]interface{}) Result {
return templatedResult{template: template, data: data}
}
func renderMessage(result templatedResult, args []ast.Expr) (string, error) {
tmpl := template.New("failure").Funcs(template.FuncMap{
"formatNode": source.FormatNode,
"callArg": func(index int) ast.Expr {
if index >= len(args) {
return nil
}
return args[index]
},
})
var err error
tmpl, err = tmpl.Parse(result.template)
if err != nil {
return "", err
}
buf := new(bytes.Buffer)
err = tmpl.Execute(buf, map[string]interface{}{
"Data": result.data,
})
return buf.String(), err
}

91
vendor/github.com/gotestyourself/gotestyourself/assert/result.go generated vendored Normal file
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package assert
import (
"fmt"
"go/ast"
"github.com/gotestyourself/gotestyourself/assert/cmp"
"github.com/gotestyourself/gotestyourself/internal/format"
"github.com/gotestyourself/gotestyourself/internal/source"
)
func runComparison(
t TestingT,
exprFilter astExprListFilter,
f cmp.Comparison,
msgAndArgs ...interface{},
) bool {
if ht, ok := t.(helperT); ok {
ht.Helper()
}
result := f()
if result.Success() {
return true
}
var message string
switch typed := result.(type) {
case resultWithComparisonArgs:
const stackIndex = 3 // Assert/Check, assert, runComparison
args, err := source.CallExprArgs(stackIndex)
if err != nil {
t.Log(err.Error())
}
message = typed.FailureMessage(filterPrintableExpr(exprFilter(args)))
case resultBasic:
message = typed.FailureMessage()
default:
message = fmt.Sprintf("comparison returned invalid Result type: %T", result)
}
t.Log(format.WithCustomMessage(failureMessage+message, msgAndArgs...))
return false
}
type resultWithComparisonArgs interface {
FailureMessage(args []ast.Expr) string
}
type resultBasic interface {
FailureMessage() string
}
type astExprListFilter func([]ast.Expr) []ast.Expr
// filterPrintableExpr filters the ast.Expr slice to only include nodes that are
// easy to read when printed and contain relevant information to an assertion.
//
// Ident and SelectorExpr are included because they print nicely and the variable
// names may provide additional context to their values.
// BasicLit and CompositeLit are excluded because their source is equivalent to
// their value, which is already available.
// Other types are ignored for now, but could be added if they are relevant.
func filterPrintableExpr(args []ast.Expr) []ast.Expr {
result := make([]ast.Expr, len(args))
for i, arg := range args {
switch arg.(type) {
case *ast.Ident, *ast.SelectorExpr, *ast.IndexExpr, *ast.SliceExpr:
result[i] = arg
default:
result[i] = nil
}
}
return result
}
func filterExprExcludeFirst(args []ast.Expr) []ast.Expr {
if len(args) < 1 {
return nil
}
return args[1:]
}
func filterExprArgsFromComparison(args []ast.Expr) []ast.Expr {
if len(args) < 1 {
return nil
}
if callExpr, ok := args[1].(*ast.CallExpr); ok {
return callExpr.Args
}
return nil
}

27
vendor/github.com/gotestyourself/gotestyourself/internal/format/format.go generated vendored Normal file
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package format
import "fmt"
// Message accepts a msgAndArgs varargs and formats it using fmt.Sprintf
func Message(msgAndArgs ...interface{}) string {
switch len(msgAndArgs) {
case 0:
return ""
case 1:
return fmt.Sprintf("%v", msgAndArgs[0])
default:
return fmt.Sprintf(msgAndArgs[0].(string), msgAndArgs[1:]...)
}
}
// WithCustomMessage accepts one or two messages and formats them appropriately
func WithCustomMessage(source string, msgAndArgs ...interface{}) string {
custom := Message(msgAndArgs...)
switch {
case custom == "":
return source
case source == "":
return custom
}
return fmt.Sprintf("%s: %s", source, custom)
}

161
vendor/github.com/gotestyourself/gotestyourself/internal/source/source.go generated vendored Normal file
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@@ -0,0 +1,161 @@
package source
import (
"bytes"
"fmt"
"go/ast"
"go/format"
"go/parser"
"go/token"
"os"
"runtime"
"strconv"
"strings"
"github.com/pkg/errors"
)
const baseStackIndex = 1
// FormattedCallExprArg returns the argument from an ast.CallExpr at the
// index in the call stack. The argument is formatted using FormatNode.
func FormattedCallExprArg(stackIndex int, argPos int) (string, error) {
args, err := CallExprArgs(stackIndex + 1)
if err != nil {
return "", err
}
return FormatNode(args[argPos])
}
func getNodeAtLine(filename string, lineNum int) (ast.Node, error) {
fileset := token.NewFileSet()
astFile, err := parser.ParseFile(fileset, filename, nil, parser.AllErrors)
if err != nil {
return nil, errors.Wrapf(err, "failed to parse source file: %s", filename)
}
node := scanToLine(fileset, astFile, lineNum)
if node == nil {
return nil, errors.Errorf(
"failed to find an expression on line %d in %s", lineNum, filename)
}
return node, nil
}
func scanToLine(fileset *token.FileSet, node ast.Node, lineNum int) ast.Node {
v := &scanToLineVisitor{lineNum: lineNum, fileset: fileset}
ast.Walk(v, node)
return v.matchedNode
}
type scanToLineVisitor struct {
lineNum int
matchedNode ast.Node
fileset *token.FileSet
}
func (v *scanToLineVisitor) Visit(node ast.Node) ast.Visitor {
if node == nil || v.matchedNode != nil {
return nil
}
if v.nodePosition(node).Line == v.lineNum {
v.matchedNode = node
return nil
}
return v
}
// In golang 1.9 the line number changed from being the line where the statement
// ended to the line where the statement began.
func (v *scanToLineVisitor) nodePosition(node ast.Node) token.Position {
if isGOVersionBefore19() {
return v.fileset.Position(node.End())
}
return v.fileset.Position(node.Pos())
}
func isGOVersionBefore19() bool {
version := runtime.Version()
// not a release version
if !strings.HasPrefix(version, "go") {
return false
}
version = strings.TrimPrefix(version, "go")
parts := strings.Split(version, ".")
if len(parts) < 2 {
return false
}
minor, err := strconv.ParseInt(parts[1], 10, 32)
return err == nil && parts[0] == "1" && minor < 9
}
func getCallExprArgs(node ast.Node) ([]ast.Expr, error) {
visitor := &callExprVisitor{}
ast.Walk(visitor, node)
if visitor.expr == nil {
return nil, errors.New("failed to find call expression")
}
return visitor.expr.Args, nil
}
type callExprVisitor struct {
expr *ast.CallExpr
}
func (v *callExprVisitor) Visit(node ast.Node) ast.Visitor {
if v.expr != nil || node == nil {
return nil
}
debug("visit (%T): %s", node, debugFormatNode{node})
if callExpr, ok := node.(*ast.CallExpr); ok {
v.expr = callExpr
return nil
}
return v
}
// FormatNode using go/format.Node and return the result as a string
func FormatNode(node ast.Node) (string, error) {
buf := new(bytes.Buffer)
err := format.Node(buf, token.NewFileSet(), node)
return buf.String(), err
}
// CallExprArgs returns the ast.Expr slice for the args of an ast.CallExpr at
// the index in the call stack.
func CallExprArgs(stackIndex int) ([]ast.Expr, error) {
_, filename, lineNum, ok := runtime.Caller(baseStackIndex + stackIndex)
if !ok {
return nil, errors.New("failed to get call stack")
}
debug("call stack position: %s:%d", filename, lineNum)
node, err := getNodeAtLine(filename, lineNum)
if err != nil {
return nil, err
}
debug("found node (%T): %s", node, debugFormatNode{node})
return getCallExprArgs(node)
}
var debugEnabled = os.Getenv("GOTESTYOURSELF_DEBUG") != ""
func debug(format string, args ...interface{}) {
if debugEnabled {
fmt.Fprintf(os.Stderr, "DEBUG: "+format+"\n", args...)
}
}
type debugFormatNode struct {
ast.Node
}
func (n debugFormatNode) String() string {
out, err := FormatNode(n.Node)
if err != nil {
return fmt.Sprintf("failed to format %s: %s", n.Node, err)
}
return out
}