cuelang.org/go@v0.10.1/encoding/protobuf/protobuf_test.go (about)

     1  // Copyright 2019 CUE Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package protobuf
    16  
    17  import (
    18  	"bytes"
    19  	"fmt"
    20  	"io/fs"
    21  	"os"
    22  	"path/filepath"
    23  	"strings"
    24  	"testing"
    25  
    26  	"github.com/google/go-cmp/cmp"
    27  
    28  	"cuelang.org/go/cue/ast"
    29  	"cuelang.org/go/cue/errors"
    30  	"cuelang.org/go/cue/format"
    31  	"cuelang.org/go/internal/cuetest"
    32  )
    33  
    34  func TestExtractDefinitions(t *testing.T) {
    35  	testCases := []string{
    36  		"networking/v1alpha3/gateway.proto",
    37  		"mixer/v1/attributes.proto",
    38  		"mixer/v1/config/client/client_config.proto",
    39  		"other/trailcomment.proto",
    40  	}
    41  	for _, file := range testCases {
    42  		t.Run(file, func(t *testing.T) {
    43  			root := "testdata/istio.io/api"
    44  			filename := filepath.Join(root, filepath.FromSlash(file))
    45  			c := &Config{
    46  				Paths: []string{"testdata", root},
    47  			}
    48  
    49  			out := &bytes.Buffer{}
    50  
    51  			if f, err := Extract(filename, nil, c); err != nil {
    52  				fmt.Fprintln(out, err)
    53  			} else {
    54  				b, _ := format.Node(f, format.Simplify())
    55  				out.Write(b)
    56  			}
    57  
    58  			wantFile := filepath.Join("testdata", filepath.Base(file)+".out.cue")
    59  			if cuetest.UpdateGoldenFiles {
    60  				_ = os.WriteFile(wantFile, out.Bytes(), 0644)
    61  				return
    62  			}
    63  
    64  			b, err := os.ReadFile(wantFile)
    65  			if err != nil {
    66  				t.Fatal(err)
    67  			}
    68  
    69  			if diff := cmp.Diff(out.String(), string(b)); diff != "" {
    70  				t.Error(diff)
    71  			}
    72  		})
    73  	}
    74  }
    75  
    76  func TestBuild(t *testing.T) {
    77  	cwd, _ := os.Getwd()
    78  	root := filepath.Join(cwd, "testdata/istio.io/api")
    79  	c := &Config{
    80  		Root:   root,
    81  		Module: "istio.io/api@v0",
    82  		Paths: []string{
    83  			root,
    84  			filepath.Join(cwd, "testdata"),
    85  		},
    86  	}
    87  
    88  	b := NewExtractor(c)
    89  	_ = b.AddFile("networking/v1alpha3/gateway.proto", nil)
    90  	_ = b.AddFile("mixer/v1/attributes.proto", nil)
    91  	_ = b.AddFile("mixer/v1/mixer.proto", nil)
    92  	_ = b.AddFile("mixer/v1/config/client/client_config.proto", nil)
    93  
    94  	files, err := b.Files()
    95  	if err != nil {
    96  		t.Fatal(errors.Details(err, nil))
    97  	}
    98  
    99  	if cuetest.UpdateGoldenFiles {
   100  		for _, f := range files {
   101  			b, err := format.Node(f)
   102  			if err != nil {
   103  				t.Fatal(err)
   104  			}
   105  			_ = os.MkdirAll(filepath.Dir(f.Filename), 0755)
   106  			err = os.WriteFile(f.Filename, b, 0644)
   107  			if err != nil {
   108  				t.Fatal(err)
   109  			}
   110  		}
   111  		return
   112  	}
   113  
   114  	gotFiles := map[string]*ast.File{}
   115  
   116  	for _, f := range files {
   117  		rel, err := filepath.Rel(cwd, f.Filename)
   118  		if err != nil {
   119  			t.Fatal(err)
   120  		}
   121  		gotFiles[rel] = f
   122  	}
   123  
   124  	_ = filepath.WalkDir("testdata/istio.io/api", func(path string, entry fs.DirEntry, err error) error {
   125  		if err != nil || entry.IsDir() || !strings.HasSuffix(path, ".cue") {
   126  			return err
   127  		}
   128  
   129  		f := gotFiles[path]
   130  		if f == nil {
   131  			t.Errorf("did not produce file %q", path)
   132  			return nil
   133  		}
   134  		delete(gotFiles, path)
   135  
   136  		got, err := format.Node(f)
   137  		if err != nil {
   138  			t.Fatal(err)
   139  		}
   140  
   141  		want, err := os.ReadFile(path)
   142  		if err != nil {
   143  			t.Fatal(err)
   144  		}
   145  
   146  		if !bytes.Equal(got, want) {
   147  			t.Errorf("%s: files differ", path)
   148  		}
   149  		return nil
   150  	})
   151  
   152  	for filename := range gotFiles {
   153  		t.Errorf("did not expect file %q", filename)
   154  	}
   155  }