text: // Copyright 2009 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  package pflag
  
  import (
  	"fmt"
  	"testing"
  )
  
  func setUpSAFlagSet(sap *[]string) *FlagSet {
  	f := NewFlagSet("test", ContinueOnError)
  	f.StringArrayVar(sap, "sa", []string{}, "Command separated list!")
  	return f
  }
  
  func setUpSAFlagSetWithDefault(sap *[]string) *FlagSet {
  	f := NewFlagSet("test", ContinueOnError)
  	f.StringArrayVar(sap, "sa", []string{"default", "values"}, "Command separated list!")
  	return f
  }
  
  func TestEmptySA(t *testing.T) {
  	var sa []string
  	f := setUpSAFlagSet(&sa)
  	err := f.Parse([]string{})
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  
  	getSA, err := f.GetStringArray("sa")
  	if err != nil {
  		t.Fatal("got an error from GetStringArray():", err)
  	}
  	if len(getSA) != 0 {
  		t.Fatalf("got sa %v with len=%d but expected length=0", getSA, len(getSA))
  	}
  }
  
  func TestEmptySAValue(t *testing.T) {
  	var sa []string
  	f := setUpSAFlagSet(&sa)
  	err := f.Parse([]string{"--sa="})
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  
  	getSA, err := f.GetStringArray("sa")
  	if err != nil {
  		t.Fatal("got an error from GetStringArray():", err)
  	}
  	if len(getSA) != 0 {
  		t.Fatalf("got sa %v with len=%d but expected length=0", getSA, len(getSA))
  	}
  }
  
  func TestSADefault(t *testing.T) {
  	var sa []string
  	f := setUpSAFlagSetWithDefault(&sa)
  
  	vals := []string{"default", "values"}
  
  	err := f.Parse([]string{})
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  	for i, v := range sa {
  		if vals[i] != v {
  			t.Fatalf("expected sa[%d] to be %s but got: %s", i, vals[i], v)
  		}
  	}
  
  	getSA, err := f.GetStringArray("sa")
  	if err != nil {
  		t.Fatal("got an error from GetStringArray():", err)
  	}
  	for i, v := range getSA {
  		if vals[i] != v {
  			t.Fatalf("expected sa[%d] to be %s from GetStringArray but got: %s", i, vals[i], v)
  		}
  	}
  }
  
  func TestSAWithDefault(t *testing.T) {
  	var sa []string
  	f := setUpSAFlagSetWithDefault(&sa)
  
  	val := "one"
  	arg := fmt.Sprintf("--sa=%s", val)
  	err := f.Parse([]string{arg})
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  
  	if len(sa) != 1 {
  		t.Fatalf("expected number of values to be %d but %d", 1, len(sa))
  	}
  
  	if sa[0] != val {
  		t.Fatalf("expected value to be %s but got: %s", sa[0], val)
  	}
  
  	getSA, err := f.GetStringArray("sa")
  	if err != nil {
  		t.Fatal("got an error from GetStringArray():", err)
  	}
  
  	if len(getSA) != 1 {
  		t.Fatalf("expected number of values to be %d but %d", 1, len(getSA))
  	}
  
  	if getSA[0] != val {
  		t.Fatalf("expected value to be %s but got: %s", getSA[0], val)
  	}
  }
  
  func TestSACalledTwice(t *testing.T) {
  	var sa []string
  	f := setUpSAFlagSet(&sa)
  
  	in := []string{"one", "two"}
  	expected := []string{"one", "two"}
  	argfmt := "--sa=%s"
  	arg1 := fmt.Sprintf(argfmt, in[0])
  	arg2 := fmt.Sprintf(argfmt, in[1])
  	err := f.Parse([]string{arg1, arg2})
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  
  	if len(expected) != len(sa) {
  		t.Fatalf("expected number of sa to be %d but got: %d", len(expected), len(sa))
  	}
  	for i, v := range sa {
  		if expected[i] != v {
  			t.Fatalf("expected sa[%d] to be %s but got: %s", i, expected[i], v)
  		}
  	}
  
  	values, err := f.GetStringArray("sa")
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  
  	if len(expected) != len(values) {
  		t.Fatalf("expected number of values to be %d but got: %d", len(expected), len(sa))
  	}
  	for i, v := range values {
  		if expected[i] != v {
  			t.Fatalf("expected got sa[%d] to be %s but got: %s", i, expected[i], v)
  		}
  	}
  }
  
  func TestSAWithSpecialChar(t *testing.T) {
  	var sa []string
  	f := setUpSAFlagSet(&sa)
  
  	in := []string{"one,two", `"three"`, `"four,five",six`, "seven eight"}
  	expected := []string{"one,two", `"three"`, `"four,five",six`, "seven eight"}
  	argfmt := "--sa=%s"
  	arg1 := fmt.Sprintf(argfmt, in[0])
  	arg2 := fmt.Sprintf(argfmt, in[1])
  	arg3 := fmt.Sprintf(argfmt, in[2])
  	arg4 := fmt.Sprintf(argfmt, in[3])
  	err := f.Parse([]string{arg1, arg2, arg3, arg4})
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  
  	if len(expected) != len(sa) {
  		t.Fatalf("expected number of sa to be %d but got: %d", len(expected), len(sa))
  	}
  	for i, v := range sa {
  		if expected[i] != v {
  			t.Fatalf("expected sa[%d] to be %s but got: %s", i, expected[i], v)
  		}
  	}
  
  	values, err := f.GetStringArray("sa")
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  
  	if len(expected) != len(values) {
  		t.Fatalf("expected number of values to be %d but got: %d", len(expected), len(values))
  	}
  	for i, v := range values {
  		if expected[i] != v {
  			t.Fatalf("expected got sa[%d] to be %s but got: %s", i, expected[i], v)
  		}
  	}
  }
  
  func TestSAWithSquareBrackets(t *testing.T) {
  	var sa []string
  	f := setUpSAFlagSet(&sa)
  
  	in := []string{"][]-[", "[a-z]", "[a-z]+"}
  	expected := []string{"][]-[", "[a-z]", "[a-z]+"}
  	argfmt := "--sa=%s"
  	arg1 := fmt.Sprintf(argfmt, in[0])
  	arg2 := fmt.Sprintf(argfmt, in[1])
  	arg3 := fmt.Sprintf(argfmt, in[2])
  	err := f.Parse([]string{arg1, arg2, arg3})
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  
  	if len(expected) != len(sa) {
  		t.Fatalf("expected number of sa to be %d but got: %d", len(expected), len(sa))
  	}
  	for i, v := range sa {
  		if expected[i] != v {
  			t.Fatalf("expected sa[%d] to be %s but got: %s", i, expected[i], v)
  		}
  	}
  
  	values, err := f.GetStringArray("sa")
  	if err != nil {
  		t.Fatal("expected no error; got", err)
  	}
  
  	if len(expected) != len(values) {
  		t.Fatalf("expected number of values to be %d but got: %d", len(expected), len(values))
  	}
  	for i, v := range values {
  		if expected[i] != v {
  			t.Fatalf("expected got sa[%d] to be %s but got: %s", i, expected[i], v)
  		}
  	}
  }
  