issue9026.go

     1  package issue9026
     2  
     3  // This file appears in its own package since the assertion tests the
     4  // per-package counter used to create fresh identifiers.
     5  
     6  /*
     7  typedef struct { int i; } git_merge_file_input;
     8  
     9  typedef struct { int j; } git_merge_file_options;
    10  
    11  void git_merge_file(
    12          git_merge_file_input *in,
    13          git_merge_file_options *opts) {}
    14  */
    15  import "C"
    16  import (
    17  	"fmt"
    18  	"testing"
    19  )
    20  
    21  func Test(t *testing.T) {
    22  	var in C.git_merge_file_input
    23  	var opts *C.git_merge_file_options
    24  	C.git_merge_file(&in, opts)
    25  
    26  	// Test that the generated type names are deterministic.
    27  	// (Previously this would fail about 10% of the time.)
    28  	//
    29  	// Brittle: the assertion may fail spuriously when the algorithm
    30  	// changes, but should remain stable otherwise.
    31  	got := fmt.Sprintf("%T %T", in, opts)
    32  	want := "issue9026._Ctype_struct___0 *issue9026._Ctype_struct___1"
    33  	if got != want {
    34  		t.Errorf("Non-deterministic type names: got %s, want %s", got, want)
    35  	}
    36  }
    37
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