issue9026.go

     1  // Copyright 2014 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 issue9026
     6  
     7  // This file appears in its own package since the assertion tests the
     8  // per-package counter used to create fresh identifiers.
     9  
    10  /*
    11  typedef struct { int i; } git_merge_file_input;
    12  
    13  typedef struct { int j; } git_merge_file_options;
    14  
    15  void git_merge_file(
    16          git_merge_file_input *in,
    17          git_merge_file_options *opts) {}
    18  */
    19  import "C"
    20  import (
    21  	"fmt"
    22  	"testing"
    23  )
    24  
    25  func Test(t *testing.T) {
    26  	var in C.git_merge_file_input
    27  	var opts *C.git_merge_file_options
    28  	C.git_merge_file(&in, opts)
    29  
    30  	// Test that the generated type names are deterministic.
    31  	// (Previously this would fail about 10% of the time.)
    32  	//
    33  	// Brittle: the assertion may fail spuriously when the algorithm
    34  	// changes, but should remain stable otherwise.
    35  	got := fmt.Sprintf("%T %T", in, opts)
    36  	want := "issue9026._Ctype_struct___0 *issue9026._Ctype_struct___1"
    37  	if got != want {
    38  		t.Errorf("Non-deterministic type names: got %s, want %s", got, want)
    39  	}
    40  }
    41
View as plain text