tables_test.go

Documentation: golang.org/x/text/unicode/bidi

     1  // Copyright 2015 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 bidi
     6  
     7  import (
     8  	"testing"
     9  
    10  	"golang.org/x/text/internal/gen"
    11  	"golang.org/x/text/internal/testtext"
    12  	"golang.org/x/text/internal/ucd"
    13  )
    14  
    15  var labels = []string{
    16  	AL:  "AL",
    17  	AN:  "AN",
    18  	B:   "B",
    19  	BN:  "BN",
    20  	CS:  "CS",
    21  	EN:  "EN",
    22  	ES:  "ES",
    23  	ET:  "ET",
    24  	L:   "L",
    25  	NSM: "NSM",
    26  	ON:  "ON",
    27  	R:   "R",
    28  	S:   "S",
    29  	WS:  "WS",
    30  
    31  	LRO: "LRO",
    32  	RLO: "RLO",
    33  	LRE: "LRE",
    34  	RLE: "RLE",
    35  	PDF: "PDF",
    36  	LRI: "LRI",
    37  	RLI: "RLI",
    38  	FSI: "FSI",
    39  	PDI: "PDI",
    40  }
    41  
    42  func TestTables(t *testing.T) {
    43  	testtext.SkipIfNotLong(t)
    44  
    45  	ucd.Parse(gen.OpenUCDFile("BidiBrackets.txt"), func(p *ucd.Parser) {
    46  		r1 := p.Rune(0)
    47  		want := p.Rune(1)
    48  
    49  		e, _ := LookupRune(r1)
    50  		if got := e.reverseBracket(r1); got != want {
    51  			t.Errorf("Reverse(%U) = %U; want %U", r1, got, want)
    52  		}
    53  	})
    54  
    55  	done := map[rune]bool{}
    56  	test := func(name string, r rune, want string) {
    57  		str := string(r)
    58  		e, _ := LookupString(str)
    59  		if got := labels[e.Class()]; got != want {
    60  			t.Errorf("%s:%U: got %s; want %s", name, r, got, want)
    61  		}
    62  		if e2, sz := LookupRune(r); e != e2 || sz != len(str) {
    63  			t.Errorf("LookupRune(%U) = %v, %d; want %v, %d", r, e2, e, sz, len(str))
    64  		}
    65  		if e2, sz := Lookup([]byte(str)); e != e2 || sz != len(str) {
    66  			t.Errorf("Lookup(%U) = %v, %d; want %v, %d", r, e2, e, sz, len(str))
    67  		}
    68  		done[r] = true
    69  	}
    70  
    71  	// Insert the derived BiDi properties.
    72  	ucd.Parse(gen.OpenUCDFile("extracted/DerivedBidiClass.txt"), func(p *ucd.Parser) {
    73  		r := p.Rune(0)
    74  		test("derived", r, p.String(1))
    75  	})
    76  	visitDefaults(func(r rune, c Class) {
    77  		if !done[r] {
    78  			test("default", r, labels[c])
    79  		}
    80  	})
    81  
    82  }
    83
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