mirror of
https://github.com/gotenberg/gotenberg.git
synced 2026-08-09 09:02:15 +01:00
71911cb1a7
* add new metadata functions to pdf engine interface * add exiftool module with relevant test cases * use exiftool to overwrite metadata in libreoffice * use exiftool to overwrite metadata in chromium * fix linter issues * fix more linter issues * more test cases for better coverage * remove utils * minor changes * remove metadata from pdfoptions * correct indentation * read/write metadata one file at a time.
419 lines
10 KiB
Go
419 lines
10 KiB
Go
package exiftool
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"os"
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"reflect"
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"testing"
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"github.com/stretchr/testify/assert"
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"go.uber.org/zap"
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"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
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)
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func TestMetadataValueTypeError_Error(t *testing.T) {
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instance := MetadataValueTypeError{
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Entries: map[string]interface{}{
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"foo": "foo",
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},
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}
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assert.True(t, len(instance.Error()) > 0)
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}
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func TestMetadataValueTypeError_GetKeys(t *testing.T) {
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for i, tc := range []struct {
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instance MetadataValueTypeError
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expect []string
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}{
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{
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instance: MetadataValueTypeError{
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Entries: map[string]interface{}{},
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},
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expect: []string{},
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},
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{
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instance: MetadataValueTypeError{
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Entries: map[string]interface{}{
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"foo": "foo",
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},
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},
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expect: []string{"foo"},
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},
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{
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instance: MetadataValueTypeError{
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Entries: map[string]interface{}{
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"foo": "foo",
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"bar": float64(123),
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"baz": 4.56,
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"qux": true,
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"quux": nil,
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},
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},
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expect: []string{"foo", "bar", "baz", "qux", "quux"},
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},
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} {
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actual := tc.instance.GetKeys()
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if !assert.ElementsMatch(t, actual, tc.expect) {
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t.Errorf("test %d: expected %+v but got: %+v", i, tc.expect, actual)
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}
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}
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}
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func TestExifTool_Descriptor(t *testing.T) {
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descriptor := new(ExifTool).Descriptor()
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actual := reflect.TypeOf(descriptor.New())
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expect := reflect.TypeOf(new(ExifTool))
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if actual != expect {
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t.Errorf("expected '%s' but got '%s'", expect, actual)
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}
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}
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func TestExifTool_Provision(t *testing.T) {
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engine := new(ExifTool)
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ctx := gotenberg.NewContext(gotenberg.ParsedFlags{}, nil)
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err := engine.Provision(ctx)
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if err != nil {
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t.Errorf("expected no error but got: %v", err)
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}
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}
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func TestExifTool_Validate(t *testing.T) {
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for _, tc := range []struct {
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scenario string
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binPath string
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expectError bool
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}{
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{
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scenario: "empty bin path",
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binPath: "",
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expectError: true,
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},
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{
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scenario: "bin path does not exist",
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binPath: "/foo",
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expectError: true,
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},
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{
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scenario: "validate success",
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binPath: os.Getenv("EXIFTOOL_BIN_PATH"),
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expectError: false,
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},
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} {
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t.Run(tc.scenario, func(t *testing.T) {
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engine := new(ExifTool)
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engine.binPath = tc.binPath
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err := engine.Validate()
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if !tc.expectError && err != nil {
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t.Fatalf("expected no error but got: %v", err)
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}
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if tc.expectError && err == nil {
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t.Fatal("expected error but got none")
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}
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})
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}
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}
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func TestExiftool_Merge(t *testing.T) {
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engine := new(ExifTool)
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err := engine.Merge(context.Background(), zap.NewNop(), nil, "")
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if !errors.Is(err, gotenberg.ErrPdfEngineMethodNotSupported) {
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t.Errorf("expected error %v, but got: %v", gotenberg.ErrPdfEngineMethodNotSupported, err)
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}
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}
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func TestExiftool_Convert(t *testing.T) {
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engine := new(ExifTool)
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err := engine.Convert(context.Background(), zap.NewNop(), gotenberg.PdfFormats{}, "", "")
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if !errors.Is(err, gotenberg.ErrPdfEngineMethodNotSupported) {
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t.Errorf("expected error %v, but got: %v", gotenberg.ErrPdfEngineMethodNotSupported, err)
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}
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}
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func TestExiftool_ReadMetadata(t *testing.T) {
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for _, tc := range []struct {
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scenario string
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ctx context.Context
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inputPath string
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subset map[string]interface{}
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expectError bool
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expectDiff bool
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}{
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{
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scenario: "invalid input path",
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ctx: context.TODO(),
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inputPath: "foo",
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expectError: true,
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},
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{
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scenario: "single file success",
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ctx: context.TODO(),
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inputPath: "/tests/test/testdata/pdfengines/sample1.pdf",
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subset: map[string]interface{}{
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"FileName": "sample1.pdf",
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"FileTypeExtension": "pdf",
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"MIMEType": "application/pdf",
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"PDFVersion": 1.4,
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"PageCount": float64(3),
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"CreateDate": "2018:12:06 17:50:06+00:00",
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"ModifyDate": "2018:12:06 17:50:06+00:00",
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"Directory": "/tests/test/testdata/pdfengines",
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"FileType": "PDF",
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"Linearized": "No",
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"Creator": "Chromium",
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"Producer": "Skia/PDF m70",
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"SourceFile": "/tests/test/testdata/pdfengines/sample1.pdf",
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},
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},
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{
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scenario: "single file incorrect metadata",
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ctx: context.TODO(),
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inputPath: "/tests/test/testdata/pdfengines/sample1.pdf",
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subset: map[string]interface{}{
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"FileName": "sample1.pdf",
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"FileTypeExtension": "pdf",
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"MIMEType": "application/pdf",
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"PDFVersion": 1.4,
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"PageCount": float64(3),
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"CreateDate": "2018:12:06 17:50:06+00:00",
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"ModifyDate": "2018:12:06 17:50:06+00:00",
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"Directory": "/tests/test/testdata/pdfengines",
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"FileType": "PDF",
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"Linearized": "No",
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"Creator": "INVALID",
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"Producer": "Skia/PDF m70",
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"SourceFile": "/tests/test/testdata/pdfengines/sample1.pdf",
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},
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expectDiff: true,
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},
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} {
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t.Run(tc.scenario, func(t *testing.T) {
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engine := new(ExifTool)
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err := engine.Provision(nil)
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if err != nil {
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t.Fatalf("expected error but got: %v", err)
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}
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actualMetadata := map[string]interface{}{}
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err = engine.ReadMetadata(tc.ctx, zap.NewNop(), tc.inputPath, actualMetadata)
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if !tc.expectError && err != nil {
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t.Fatalf("expected no error but got: %v", err)
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}
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if tc.expectError && err == nil {
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t.Fatal("expected error but got none")
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}
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if tc.subset != nil && err == nil {
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if !tc.expectDiff && !isMapSubset(actualMetadata, tc.subset) {
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t.Errorf("test: %s: expected: %+v to be a subset of: %+v at path: %s",
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tc.scenario, tc.subset, actualMetadata, tc.inputPath)
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} else if tc.expectDiff && isMapSubset(actualMetadata, tc.subset) {
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t.Errorf("test: %s: expected: %+v to be not be a subset of: %+v at path: %s",
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tc.scenario, tc.subset, actualMetadata, tc.inputPath)
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}
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}
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})
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}
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}
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func TestExiftool_WriteMetadata(t *testing.T) {
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for _, tc := range []struct {
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scenario string
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ctx context.Context
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inputPath string
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newMetadata map[string]interface{}
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contains map[string]interface{}
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expectError bool
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expectDiff bool
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}{
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{
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scenario: "single file success",
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ctx: context.TODO(),
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inputPath: "/tests/test/testdata/pdfengines/sample1.pdf",
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newMetadata: map[string]interface{}{
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"Producer": "foo",
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},
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contains: map[string]interface{}{
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"Producer": "foo",
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},
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expectError: false,
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expectDiff: false,
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},
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{
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scenario: "single file not same metadata",
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ctx: context.TODO(),
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inputPath: "/tests/test/testdata/pdfengines/sample1.pdf",
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newMetadata: map[string]interface{}{
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"Producer": "foo",
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},
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contains: map[string]interface{}{
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"Producer": "foobar",
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},
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expectError: false,
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expectDiff: true,
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},
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{
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scenario: "single file unknown type",
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ctx: context.TODO(),
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inputPath: "/tests/test/testdata/pdfengines/sample1.pdf",
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newMetadata: map[string]interface{}{
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"foo": map[string]string{},
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},
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expectError: true,
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expectDiff: false,
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},
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} {
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t.Run(tc.scenario, func(t *testing.T) {
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engine := new(ExifTool)
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err := engine.Provision(nil)
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if err != nil {
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t.Fatalf("expected error but got: %v", err)
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}
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fs := gotenberg.NewFileSystem()
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outputDir, err := fs.MkdirAll()
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if err != nil {
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t.Fatalf("expected error but got: %v", err)
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}
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defer func() {
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err = os.RemoveAll(fs.WorkingDirPath())
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if err != nil {
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t.Fatalf("expected no error while cleaning up but got: %v", err)
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}
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}()
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copyPath := fmt.Sprintf("%s/copy_temp.pdf", outputDir)
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// open the source file
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source, err := os.Open(tc.inputPath)
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if err != nil {
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t.Fatalf("error in opening file: %v", err)
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}
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// create the destination file
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destination, err := os.Create(copyPath)
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if err != nil {
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t.Fatalf("error in creating file: %v", err)
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}
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// copy the contents of source to destination file
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_, err = io.Copy(destination, source)
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if err != nil {
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t.Fatalf("error in copying file: %v", err)
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}
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err = source.Close()
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if err != nil {
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t.Fatalf("error in source file close: %v", err)
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}
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err = destination.Close()
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if err != nil {
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t.Fatalf("error in destination file close: %v", err)
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}
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// write metadata to new copy files
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err = engine.WriteMetadata(tc.ctx, zap.NewNop(), copyPath, tc.newMetadata)
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if !tc.expectError && err != nil {
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t.Fatalf("expected no error but got: %v", err)
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}
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if tc.expectError && err == nil {
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t.Fatal("expected error but got none")
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}
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if err == nil {
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readMetadata := map[string]interface{}{}
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readErr := engine.ReadMetadata(tc.ctx, zap.NewNop(), copyPath, readMetadata)
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if tc.contains != nil && readErr == nil {
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// match metadata
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if !tc.expectDiff && !isMapSubset(readMetadata, tc.contains) {
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t.Errorf("test: %s: expected: %+v to be a subset of: %+v at path: %s",
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tc.scenario, tc.contains, readMetadata, copyPath)
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} else if tc.expectDiff && isMapSubset(readMetadata, tc.contains) {
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t.Errorf("test: %s: expected: %+v to be not be a subset of: %+v at path: %s",
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tc.scenario, tc.contains, readMetadata, copyPath)
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}
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}
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}
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})
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}
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}
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func isMapSubset(mapSet interface{}, mapSubset interface{}) bool {
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mapSetValue := reflect.ValueOf(mapSet)
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mapSubsetValue := reflect.ValueOf(mapSubset)
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if mapSetValue.Kind() != reflect.Map || mapSubsetValue.Kind() != reflect.Map {
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return false
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}
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if reflect.TypeOf(mapSetValue) != reflect.TypeOf(mapSubsetValue) {
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return false
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}
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if len(mapSubsetValue.MapKeys()) == 0 {
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return true
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}
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iterMapSubset := mapSubsetValue.MapRange()
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for iterMapSubset.Next() {
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k := iterMapSubset.Key()
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v := iterMapSubset.Value()
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v2 := mapSetValue.MapIndex(k)
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if !v2.IsValid() {
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return false
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}
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if isValueKind(v, reflect.Slice) && isValueKind(v2, reflect.Slice) {
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vSlice := convertSlice(v)
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v2Slice := convertSlice(v2)
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if !equal(vSlice, v2Slice) {
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return false
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}
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} else if v.Interface() != v2.Interface() {
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return false
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}
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}
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return true
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}
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func isValueKind(value reflect.Value, kind reflect.Kind) bool {
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return reflect.TypeOf(value.Interface()).Kind() == kind
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}
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func convertSlice(value reflect.Value) []interface{} {
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slice := make([]interface{}, reflect.ValueOf(value.Interface()).Len())
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for i := range slice {
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slice = append(slice, reflect.ValueOf(value.Interface()).Index(i).Interface())
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}
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return slice
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}
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// equal tells whether a and b contain the same elements.
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// A nil argument is equivalent to an empty slice.
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func equal(a, b []interface{}) bool {
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if len(a) != len(b) {
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return false
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}
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for i, v := range a {
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if v != b[i] {
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return false
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}
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}
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return true
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}
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