Source file src/pkg/ebnf/ebnf_test.go

// 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 ebnf

import (
    "io/ioutil"
    "testing"
)


var grammars = []string{
    `Program = .
    `,

    `Program = foo .
    foo = "foo" .
    `,

    `Program = "a" | "b" "c" .
    `,

    `Program = "a" ... "z" .
    `,

    `Program = Song .
     Song = { Note } .
     Note = Do | (Re | Mi | Fa | So | La) | Ti .
     Do = "c" .
     Re = "d" .
     Mi = "e" .
     Fa = "f" .
     So = "g" .
     La = "a" .
     Ti = ti .
     ti = "b" .
    `,
}


func check(t *testing.T, filename string, src []byte) {
    grammar, err := Parse(filename, src)
    if err != nil {
        t.Errorf("Parse(%s) failed: %v", src, err)
    }
    if err = Verify(grammar, "Program"); err != nil {
        t.Errorf("Verify(%s) failed: %v", src, err)
    }
}


func TestGrammars(t *testing.T) {
    for _, src := range grammars {
        check(t, "", []byte(src))
    }
}


var files = []string{
// TODO(gri) add some test files
}


func TestFiles(t *testing.T) {
    for _, filename := range files {
        src, err := ioutil.ReadFile(filename)
        if err != nil {
            t.Fatal(err)
        }
        check(t, filename, src)
    }
}