token_test.go

     1  // Copyright 2019 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 token
     6  
     7  import "testing"
     8  
     9  func TestIsIdentifier(t *testing.T) {
    10  	tests := []struct {
    11  		name string
    12  		in   string
    13  		want bool
    14  	}{
    15  		{"Empty", "", false},
    16  		{"Space", " ", false},
    17  		{"SpaceSuffix", "foo ", false},
    18  		{"Number", "123", false},
    19  		{"Keyword", "func", false},
    20  
    21  		{"LettersASCII", "foo", true},
    22  		{"MixedASCII", "_bar123", true},
    23  		{"UppercaseKeyword", "Func", true},
    24  		{"LettersUnicode", "fóö", true},
    25  	}
    26  	for _, test := range tests {
    27  		t.Run(test.name, func(t *testing.T) {
    28  			if got := IsIdentifier(test.in); got != test.want {
    29  				t.Fatalf("IsIdentifier(%q) = %t, want %v", test.in, got, test.want)
    30  			}
    31  		})
    32  	}
    33  }
    34
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