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// Copyright 2017 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package getopt
import (
"bytes"
"fmt"
"os"
"reflect"
"runtime"
"strings"
"testing"
"time"
)
func TestGeneric(t *testing.T) {
const (
shortTest = iota
longTest
bothTest
)
for _, tt := range []struct {
where string
kind int
val interface{}
str string
def interface{}
in []string
err string
}{
// Do all four tests for string, the rest can mostly just use
// shortTest (the 0 value).
{
where: loc(),
kind: shortTest,
val: "42",
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
kind: longTest,
val: "42",
str: "42",
in: []string{"test", "--long", "42"},
},
{
where: loc(),
kind: bothTest,
val: "42",
str: "42",
in: []string{"test", "--both", "42"},
},
{
where: loc(),
kind: bothTest,
val: "42",
str: "42",
in: []string{"test", "-b", "42"},
},
{
where: loc(),
val: "42",
def: "42",
str: "42",
in: []string{"test"},
},
{
where: loc(),
val: "42",
def: "43",
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: true,
str: "true",
in: []string{"test", "-s"},
},
{
where: loc(),
val: true,
def: true,
str: "true",
in: []string{"test"},
},
{
where: loc(),
kind: longTest,
val: false,
str: "false",
in: []string{"test", "--long=false"},
},
{
where: loc(),
kind: longTest,
val: false,
def: true,
str: "false",
in: []string{"test", "--long=false"},
},
{
where: loc(),
val: int(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: int8(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: int16(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: int32(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: int64(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: uint(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: uint8(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: uint16(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: uint32(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: uint64(42),
str: "42",
in: []string{"test", "-s", "42"},
},
{
where: loc(),
val: float32(4.2),
str: "4.2",
in: []string{"test", "-s", "4.2"},
},
{
where: loc(),
val: float64(4.2),
str: "4.2",
in: []string{"test", "-s", "4.2"},
},
{
where: loc(),
val: time.Duration(time.Second * 42),
def: time.Second * 2,
str: "42s",
in: []string{"test", "-s", "42s"},
},
{
where: loc(),
val: time.Duration(time.Second * 42),
def: time.Second * 2,
str: "42s",
in: []string{"test", "-s42s"},
},
{
where: loc(),
val: time.Duration(time.Second * 2),
def: time.Second * 2,
in: []string{"test", "-s42"},
str: "2s",
err: "test: time: missing unit in duration 42",
},
{
where: loc(),
val: []string{"42", "."},
str: "42,.",
def: []string{"one", "two", "three"},
in: []string{"test", "-s42", "-s."},
},
{
where: loc(),
val: []string{"42", "."},
str: "42,.",
def: []string{"one", "two", "three"},
in: []string{"test", "-s42,."},
},
{
where: loc(),
val: []string{"one", "two", "three"},
def: []string{"one", "two", "three"},
str: "one,two,three",
in: []string{"test"},
},
} {
reset()
var opt Option
val := reflect.New(reflect.TypeOf(tt.val)).Interface()
if tt.def != nil {
reflect.ValueOf(val).Elem().Set(reflect.ValueOf(tt.def))
}
switch tt.kind {
case shortTest:
opt = Flag(val, 's')
case longTest:
opt = FlagLong(val, "long", 0)
case bothTest:
opt = FlagLong(val, "both", 'b')
}
_ = opt
parse(tt.in)
if s := checkError(tt.err); s != "" {
t.Errorf("%s: %s", tt.where, s)
continue
}
got := reflect.ValueOf(val).Elem().Interface()
want := reflect.ValueOf(tt.val).Interface()
if !reflect.DeepEqual(got, want) {
t.Errorf("%s: got %v, want %v", tt.where, got, want)
}
if str := opt.String(); str != tt.str {
t.Errorf("%s: got string %q, want %q", tt.where, str, tt.str)
}
}
}
func TestGenericDup(t *testing.T) {
defer func() {
stderr = os.Stderr
exit = os.Exit
}()
reset()
var v1, v2 string
type myPanic struct{}
var errbuf bytes.Buffer
stderr = &errbuf
_, file, line, _ := runtime.Caller(0)
Flag(&v1, 's')
line++ // line is now the line number of the first call to Flag.
exit = func(i int) { panic(myPanic{}) }
defer func() {
p := recover()
if _, ok := p.(myPanic); ok {
err := errbuf.String()
if !strings.Contains(err, "-s already declared") || !strings.Contains(err, fmt.Sprintf("%s:%d", file, line)) {
t.Errorf("unexpected error: %q\nshould contain \"-s already declared\" and \"%s:%d\"", err, file, line)
}
} else if p == nil {
t.Errorf("Second call to Flag did not fail")
} else {
t.Errorf("panic %v", p)
}
}()
Flag(&v2, 's')
}
func TestGenericDupNested(t *testing.T) {
defer func() {
stderr = os.Stderr
exit = os.Exit
}()
reset()
type myPanic struct{}
var errbuf bytes.Buffer
stderr = &errbuf
_, file, line, _ := runtime.Caller(0)
String('s', "default")
line++ // line is now the line number of the first call to Flag.
exit = func(i int) { panic(myPanic{}) }
defer func() {
p := recover()
if _, ok := p.(myPanic); ok {
err := errbuf.String()
if !strings.Contains(err, "-s already declared") || !strings.Contains(err, fmt.Sprintf("%s:%d", file, line)) {
t.Errorf("unexpected error: %q\nshould contain \"-s already declared\" and \"%s:%d\"", err, file, line)
}
} else if p == nil {
t.Errorf("Second call to Flag did not fail")
} else {
t.Errorf("panic %v", p)
}
}()
String('s', "default")
}
|
