Use global for name of test image

- Moved logic from common_test.go to testing_common.go . That was legacy
  naming.

common_test.go

@@ -1,32 +0,0 @@
-package exif
-
-import (
-	"os"
-	"path"
-
-	"io/ioutil"
-
-	"github.com/dsoprea/go-logging"
-)
-
-var (
-	assetsPath   = ""
-	testExifData = make([]byte, 0)
-)
-
-func init() {
-	goPath := os.Getenv("GOPATH")
-	if goPath == "" {
-		log.Panicf("GOPATH is empty")
-	}
-
-	assetsPath = path.Join(goPath, "src", "github.com", "dsoprea", "go-exif", "assets")
-
-	// Load test EXIF data.
-
-	filepath := path.Join(assetsPath, "NDM_8901.jpg.exif")
-
-	var err error
-	testExifData, err = ioutil.ReadFile(filepath)
-	log.PanicIf(err)
-}

exif_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"fmt"
 	"os"
-	"path"
 	"reflect"
 	"testing"
 
@@ -26,8 +25,7 @@ func TestVisit(t *testing.T) {
 
 	// Open the file.
 
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-	f, err := os.Open(filepath)
+	f, err := os.Open(testImageFilepath)
 	log.PanicIf(err)
 
 	defer f.Close()
@@ -189,11 +187,9 @@ func TestVisit(t *testing.T) {
 }
 
 func TestSearchFileAndExtractExif(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
 	// Returns a slice starting with the EXIF data and going to the end of the
 	// image.
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	if bytes.Compare(rawExif[:len(testExifData)], testExifData) != 0 {
@@ -202,9 +198,7 @@ func TestSearchFileAndExtractExif(t *testing.T) {
 }
 
 func TestSearchAndExtractExif(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	imageData, err := ioutil.ReadFile(filepath)
+	imageData, err := ioutil.ReadFile(testImageFilepath)
 	log.PanicIf(err)
 
 	rawExif, err := SearchAndExtractExif(imageData)
@@ -223,9 +217,7 @@ func TestCollect(t *testing.T) {
 		}
 	}()
 
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()

ifd_builder_test.go

@@ -3,7 +3,6 @@ package exif
 import (
 	"bytes"
 	"fmt"
-	"path"
 	"reflect"
 	"strings"
 	"testing"
@@ -1292,9 +1291,7 @@ func TestIfdBuilder_CreateIfdBuilderFromExistingChain(t *testing.T) {
 		}
 	}()
 
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -1387,9 +1384,7 @@ func TestIfdBuilder_CreateIfdBuilderFromExistingChain(t *testing.T) {
 // TODO(dustin): !! Test with an actual GPS-attached image.
 
 func TestIfdBuilder_CreateIfdBuilderFromExistingChain_RealData(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	// Decode from binary.
@@ -1505,9 +1500,7 @@ func TestIfdBuilder_CreateIfdBuilderFromExistingChain_RealData(t *testing.T) {
 }
 
 // func TestIfdBuilder_CreateIfdBuilderFromExistingChain_RealData_WithUpdate(t *testing.T) {
-// 	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-// 	rawExif, err := SearchFileAndExtractExif(filepath)
+// 	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 // 	log.PanicIf(err)
 
 // 	// Decode from binary.
@@ -1644,9 +1637,7 @@ func TestIfdBuilder_CreateIfdBuilderFromExistingChain_RealData(t *testing.T) {
 // }
 
 func ExampleIfd_Thumbnail() {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -1667,9 +1658,7 @@ func ExampleIfd_Thumbnail() {
 }
 
 func ExampleBuilderTag_SetValue() {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -1722,9 +1711,7 @@ func ExampleBuilderTag_SetValue() {
 // encodes down to a new EXIF block, reparses, and validates that the value for
 // that tag is what we set it to.
 func ExampleIfdBuilder_SetStandardWithName() {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	// Boilerplate.

ifd_enumerate_test.go

@@ -48,9 +48,7 @@ func TestIfdTagEntry_ValueBytes_RealData(t *testing.T) {
 		}
 	}()
 
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -90,9 +88,7 @@ func TestIfdTagEntry_ValueBytes_RealData(t *testing.T) {
 }
 
 func TestIfd_FindTagWithId_Hit(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -116,9 +112,7 @@ func TestIfd_FindTagWithId_Hit(t *testing.T) {
 }
 
 func TestIfd_FindTagWithId_Miss(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -142,9 +136,7 @@ func TestIfd_FindTagWithId_Miss(t *testing.T) {
 }
 
 func TestIfd_FindTagWithName_Hit(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -168,9 +160,7 @@ func TestIfd_FindTagWithName_Hit(t *testing.T) {
 }
 
 func TestIfd_FindTagWithName_Miss(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -194,9 +184,7 @@ func TestIfd_FindTagWithName_Miss(t *testing.T) {
 }
 
 func TestIfd_FindTagWithName_NonStandard(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -220,9 +208,7 @@ func TestIfd_FindTagWithName_NonStandard(t *testing.T) {
 }
 
 func TestIfd_Thumbnail(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -298,9 +284,7 @@ func TestIfd_GpsInfo(t *testing.T) {
 }
 
 func TestIfd_EnumerateTagsRecursively(t *testing.T) {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -456,9 +440,7 @@ func TestIfd_EnumerateTagsRecursively(t *testing.T) {
 }
 
 func ExampleIfd_EnumerateTagsRecursively() {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -513,9 +495,7 @@ func ExampleIfd_GpsInfo() {
 }
 
 func ExampleIfd_FindTagWithName() {
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()

testing_common.go

@@ -1,12 +1,23 @@
 package exif
 
 import (
+	"os"
+	"path"
 	"reflect"
 	"testing"
 
+	"io/ioutil"
+
 	"github.com/dsoprea/go-logging"
 )
 
+var (
+	assetsPath        = ""
+	testImageFilepath = ""
+
+	testExifData = make([]byte, 0)
+)
+
 func getExifSimpleTestIb() *IfdBuilder {
 	defer func() {
 		if state := recover(); state != nil {
@@ -147,3 +158,22 @@ func validateExifSimpleTestIb(exifData []byte, t *testing.T) {
 		}
 	}
 }
+
+func init() {
+	goPath := os.Getenv("GOPATH")
+	if goPath == "" {
+		log.Panicf("GOPATH is empty")
+	}
+
+	assetsPath = path.Join(goPath, "src", "github.com", "dsoprea", "go-exif", "assets")
+
+	testImageFilepath = path.Join(assetsPath, "NDM_8901.jpg")
+
+	// Load test EXIF data.
+
+	filepath := path.Join(assetsPath, "NDM_8901.jpg.exif")
+
+	var err error
+	testExifData, err = ioutil.ReadFile(filepath)
+	log.PanicIf(err)
+}

value_context_test.go

@@ -2,7 +2,6 @@ package exif
 
 import (
 	"bytes"
-	"path"
 	"testing"
 
 	"github.com/dsoprea/go-logging"
@@ -16,9 +15,7 @@ func TestValueContext_ReadAscii(t *testing.T) {
 		}
 	}()
 
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()
@@ -67,9 +64,7 @@ func TestValueContext_Undefined(t *testing.T) {
 		}
 	}()
 
-	filepath := path.Join(assetsPath, "NDM_8901.jpg")
-
-	rawExif, err := SearchFileAndExtractExif(filepath)
+	rawExif, err := SearchFileAndExtractExif(testImageFilepath)
 	log.PanicIf(err)
 
 	im := NewIfdMapping()