github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/cmd/docgen/extract/extract_test.go (about)

     1  // Copyright 2017 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  package extract
    11  
    12  import (
    13  	"fmt"
    14  	"strings"
    15  	"testing"
    16  )
    17  
    18  func TestSplitGroup(t *testing.T) {
    19  	g, err := ParseGrammar(strings.NewReader(`
    20  a ::=
    21  	'A' b
    22  
    23  b ::=
    24  	c
    25  	| b ',' c
    26  
    27  c ::=
    28  	'B'
    29  	| 'C'
    30  `))
    31  	if err != nil {
    32  		t.Fatal(err)
    33  	}
    34  	if err := g.Inline("b", "c"); err != nil {
    35  		t.Fatal(err)
    36  	}
    37  	b, err := g.ExtractProduction("a", true, false, nil, nil)
    38  	if err != nil {
    39  		t.Fatal(err)
    40  	}
    41  	fmt.Println(string(b))
    42  }
    43  
    44  func TestSplitOpt(t *testing.T) {
    45  	g, err := ParseGrammar(strings.NewReader(`
    46  a ::=
    47  	'A' b
    48  
    49  b ::=
    50  	'B'
    51  	|
    52  `))
    53  	if err != nil {
    54  		t.Fatal(err)
    55  	}
    56  	if err := g.Inline("b"); err != nil {
    57  		t.Fatal(err)
    58  	}
    59  	b, err := g.ExtractProduction("a", true, false, nil, nil)
    60  	if err != nil {
    61  		t.Fatal(err)
    62  	}
    63  	fmt.Println(string(b))
    64  }