quoted_test.go

     1  // Copyright 2020 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package quoted
     6  
     7  import (
     8  	"reflect"
     9  	"strings"
    10  	"testing"
    11  )
    12  
    13  func TestSplit(t *testing.T) {
    14  	for _, test := range []struct {
    15  		name    string
    16  		value   string
    17  		want    []string
    18  		wantErr string
    19  	}{
    20  		{name: "empty", value: "", want: nil},
    21  		{name: "space", value: " ", want: nil},
    22  		{name: "one", value: "a", want: []string{"a"}},
    23  		{name: "leading_space", value: " a", want: []string{"a"}},
    24  		{name: "trailing_space", value: "a ", want: []string{"a"}},
    25  		{name: "two", value: "a b", want: []string{"a", "b"}},
    26  		{name: "two_multi_space", value: "a  b", want: []string{"a", "b"}},
    27  		{name: "two_tab", value: "a\tb", want: []string{"a", "b"}},
    28  		{name: "two_newline", value: "a\nb", want: []string{"a", "b"}},
    29  		{name: "quote_single", value: `'a b'`, want: []string{"a b"}},
    30  		{name: "quote_double", value: `"a b"`, want: []string{"a b"}},
    31  		{name: "quote_both", value: `'a '"b "`, want: []string{"a ", "b "}},
    32  		{name: "quote_contains", value: `'a "'"'b"`, want: []string{`a "`, `'b`}},
    33  		{name: "escape", value: `\'`, want: []string{`\'`}},
    34  		{name: "quote_unclosed", value: `'a`, wantErr: "unterminated ' string"},
    35  	} {
    36  		t.Run(test.name, func(t *testing.T) {
    37  			got, err := Split(test.value)
    38  			if err != nil {
    39  				if test.wantErr == "" {
    40  					t.Fatalf("unexpected error: %v", err)
    41  				} else if errMsg := err.Error(); !strings.Contains(errMsg, test.wantErr) {
    42  					t.Fatalf("error %q does not contain %q", errMsg, test.wantErr)
    43  				}
    44  				return
    45  			}
    46  			if test.wantErr != "" {
    47  				t.Fatalf("unexpected success; wanted error containing %q", test.wantErr)
    48  			}
    49  			if !reflect.DeepEqual(got, test.want) {
    50  				t.Errorf("got %q; want %q", got, test.want)
    51  			}
    52  		})
    53  	}
    54  }
    55  
    56  func TestJoin(t *testing.T) {
    57  	for _, test := range []struct {
    58  		name          string
    59  		args          []string
    60  		want, wantErr string
    61  	}{
    62  		{name: "empty", args: nil, want: ""},
    63  		{name: "one", args: []string{"a"}, want: "a"},
    64  		{name: "two", args: []string{"a", "b"}, want: "a b"},
    65  		{name: "space", args: []string{"a ", "b"}, want: "'a ' b"},
    66  		{name: "newline", args: []string{"a\n", "b"}, want: "'a\n' b"},
    67  		{name: "quote", args: []string{`'a `, "b"}, want: `"'a " b`},
    68  		{name: "unquoteable", args: []string{`'"`}, wantErr: "contains both single and double quotes and cannot be quoted"},
    69  	} {
    70  		t.Run(test.name, func(t *testing.T) {
    71  			got, err := Join(test.args)
    72  			if err != nil {
    73  				if test.wantErr == "" {
    74  					t.Fatalf("unexpected error: %v", err)
    75  				} else if errMsg := err.Error(); !strings.Contains(errMsg, test.wantErr) {
    76  					t.Fatalf("error %q does not contain %q", errMsg, test.wantErr)
    77  				}
    78  				return
    79  			}
    80  			if test.wantErr != "" {
    81  				t.Fatalf("unexpected success; wanted error containing %q", test.wantErr)
    82  			}
    83  			if got != test.want {
    84  				t.Errorf("got %s; want %s", got, test.want)
    85  			}
    86  		})
    87  	}
    88  }
    89
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