flagdefs_test.go

     1  // Copyright 2019 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 test
     6  
     7  import (
     8  	"cmd/go/internal/cfg"
     9  	"cmd/go/internal/test/internal/genflags"
    10  	"internal/testenv"
    11  	"maps"
    12  	"os"
    13  	"testing"
    14  )
    15  
    16  func TestMain(m *testing.M) {
    17  	cfg.SetGOROOT(testenv.GOROOT(nil), false)
    18  	os.Exit(m.Run())
    19  }
    20  
    21  // TestPassFlagToTest ensures that the generated table of flags is
    22  // consistent with output of "go tool vet -flags", using the installed
    23  // go command---so if it fails, you may need to re-run make.bash.
    24  func TestPassFlagToTest(t *testing.T) {
    25  	wantNames := genflags.ShortTestFlags()
    26  
    27  	missing := map[string]bool{}
    28  	for _, name := range wantNames {
    29  		if !passFlagToTest[name] {
    30  			missing[name] = true
    31  		}
    32  	}
    33  	if len(missing) > 0 {
    34  		t.Errorf("passFlagToTest is missing entries: %v", missing)
    35  	}
    36  
    37  	extra := maps.Clone(passFlagToTest)
    38  	for _, name := range wantNames {
    39  		delete(extra, name)
    40  	}
    41  	if len(extra) > 0 {
    42  		t.Errorf("passFlagToTest contains extra entries: %v", extra)
    43  	}
    44  
    45  	if t.Failed() {
    46  		t.Logf("To regenerate:\n\tgo generate cmd/go/internal/test")
    47  	}
    48  }
    49  
    50  func TestPassAnalyzersToVet(t *testing.T) {
    51  	testenv.MustHaveGoBuild(t) // runs 'go tool vet -flags'
    52  
    53  	wantNames, err := genflags.VetAnalyzers()
    54  	if err != nil {
    55  		t.Fatal(err)
    56  	}
    57  
    58  	missing := map[string]bool{}
    59  	for _, name := range wantNames {
    60  		if !passAnalyzersToVet[name] {
    61  			missing[name] = true
    62  		}
    63  	}
    64  	if len(missing) > 0 {
    65  		t.Errorf("passAnalyzersToVet is missing entries: %v", missing)
    66  	}
    67  
    68  	extra := maps.Clone(passAnalyzersToVet)
    69  	for _, name := range wantNames {
    70  		delete(extra, name)
    71  	}
    72  	if len(extra) > 0 {
    73  		t.Errorf("passFlagToTest contains extra entries: %v", extra)
    74  	}
    75  
    76  	if t.Failed() {
    77  		t.Logf("To regenerate:\n\tgo generate cmd/go/internal/test")
    78  	}
    79  }
    80
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