pkgbits_test.go

     1  // Copyright 2024 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 pkgbits_test
     6  
     7  import (
     8  	"internal/pkgbits"
     9  	"strings"
    10  	"testing"
    11  )
    12  
    13  func TestRoundTrip(t *testing.T) {
    14  	for _, version := range []pkgbits.Version{
    15  		pkgbits.V0,
    16  		pkgbits.V1,
    17  		pkgbits.V2,
    18  	} {
    19  		pw := pkgbits.NewPkgEncoder(version, -1)
    20  		w := pw.NewEncoder(pkgbits.RelocMeta, pkgbits.SyncPublic)
    21  		w.Flush()
    22  
    23  		var b strings.Builder
    24  		_ = pw.DumpTo(&b)
    25  		input := b.String()
    26  
    27  		pr := pkgbits.NewPkgDecoder("package_id", input)
    28  		r := pr.NewDecoder(pkgbits.RelocMeta, pkgbits.PublicRootIdx, pkgbits.SyncPublic)
    29  
    30  		if r.Version() != w.Version() {
    31  			t.Errorf("Expected reader version %q to be the writer version %q", r.Version(), w.Version())
    32  		}
    33  	}
    34  }
    35  
    36  // Type checker to enforce that know V* have the constant values they must have.
    37  var _ [0]bool = [pkgbits.V0]bool{}
    38  var _ [1]bool = [pkgbits.V1]bool{}
    39  
    40  func TestVersions(t *testing.T) {
    41  	type vfpair struct {
    42  		v pkgbits.Version
    43  		f pkgbits.Field
    44  	}
    45  
    46  	// has field tests
    47  	for _, c := range []vfpair{
    48  		{pkgbits.V1, pkgbits.Flags},
    49  		{pkgbits.V2, pkgbits.Flags},
    50  		{pkgbits.V0, pkgbits.HasInit},
    51  		{pkgbits.V1, pkgbits.HasInit},
    52  		{pkgbits.V0, pkgbits.DerivedFuncInstance},
    53  		{pkgbits.V1, pkgbits.DerivedFuncInstance},
    54  		{pkgbits.V0, pkgbits.DerivedInfoNeeded},
    55  		{pkgbits.V1, pkgbits.DerivedInfoNeeded},
    56  		{pkgbits.V2, pkgbits.AliasTypeParamNames},
    57  	} {
    58  		if !c.v.Has(c.f) {
    59  			t.Errorf("Expected version %v to have field %v", c.v, c.f)
    60  		}
    61  	}
    62  
    63  	// does not have field tests
    64  	for _, c := range []vfpair{
    65  		{pkgbits.V0, pkgbits.Flags},
    66  		{pkgbits.V2, pkgbits.HasInit},
    67  		{pkgbits.V2, pkgbits.DerivedFuncInstance},
    68  		{pkgbits.V2, pkgbits.DerivedInfoNeeded},
    69  		{pkgbits.V0, pkgbits.AliasTypeParamNames},
    70  		{pkgbits.V1, pkgbits.AliasTypeParamNames},
    71  	} {
    72  		if c.v.Has(c.f) {
    73  			t.Errorf("Expected version %v to not have field %v", c.v, c.f)
    74  		}
    75  	}
    76  }
    77
View as plain text