separate out test function and refactor line sample

pdf2d/samples_test.go

@@ -1,35 +1,19 @@
+// See also test_test.go
+
 package pdf2d_test
 
 import (
 	"testing"
 
 	"github.com/stanim/draw2d"
-	"github.com/stanim/draw2d/pdf2d"
-
 	"github.com/stanim/draw2d.samples"
 	"github.com/stanim/draw2d.samples/android"
 	"github.com/stanim/draw2d.samples/frameimage"
 	"github.com/stanim/draw2d.samples/gopher"
 	"github.com/stanim/draw2d.samples/helloworld"
+	"github.com/stanim/draw2d.samples/line"
 )
 
-func test(t *testing.T, sample draw2d.Sample) {
-	// Initialize the graphic context on an RGBA image
-	dest := pdf2d.NewPdf("L", "mm", "A4")
-	gc := pdf2d.NewGraphicContext(dest)
-	// Draw Android logo
-	fn, err := sample(gc, "pdf")
-	if err != nil {
-		t.Errorf("Drawing %q failed: %v", fn, err)
-		return
-	}
-	// Save to png
-	err = pdf2d.SaveToPdfFile(fn, dest)
-	if err != nil {
-		t.Errorf("Saving %q failed: %v", fn, err)
-	}
-}
-
 func TestSampleAndroid(t *testing.T) {
 	test(t, android.Main)
 }
@@ -49,3 +33,7 @@ func TestSampleHelloWorld(t *testing.T) {
 func TestSampleFrameImage(t *testing.T) {
 	test(t, frameimage.Main)
 }
+
+func TestSampleLine(t *testing.T) {
+	test(t, line.Main)
+}

pdf2d/test_test.go

@@ -0,0 +1,28 @@
+// Package pdf2d_test gives test coverage with the command:
+// go test -cover ./... | grep -v "no test"
+// (It should be run from its parent draw2d directory.)
+package pdf2d_test
+
+import (
+	"testing"
+
+	"github.com/stanim/draw2d"
+	"github.com/stanim/draw2d/pdf2d"
+)
+
+func test(t *testing.T, sample draw2d.Sample) {
+	// Initialize the graphic context on an pdf document
+	dest := pdf2d.NewPdf("L", "mm", "A4")
+	gc := pdf2d.NewGraphicContext(dest)
+	// Draw Android logo
+	fn, err := sample(gc, "pdf")
+	if err != nil {
+		t.Errorf("Drawing %q failed: %v", fn, err)
+		return
+	}
+	// Save to png
+	err = pdf2d.SaveToPdfFile(fn, dest)
+	if err != nil {
+		t.Errorf("Saving %q failed: %v", fn, err)
+	}
+}

samples_test.go

@@ -1,37 +1,19 @@
-// Package draw2d_test gives test coverage with the command:
-// go test -cover ./... | grep -v "no test"
+// See also test_test.go
+
 package draw2d_test
 
 import (
-	"image"
 	"testing"
 
 	"github.com/stanim/draw2d"
-
 	"github.com/stanim/draw2d.samples"
 	"github.com/stanim/draw2d.samples/android"
 	"github.com/stanim/draw2d.samples/frameimage"
 	"github.com/stanim/draw2d.samples/gopher"
 	"github.com/stanim/draw2d.samples/helloworld"
+	"github.com/stanim/draw2d.samples/line"
 )
 
-func test(t *testing.T, draw draw2d.Sample) {
-	// Initialize the graphic context on an RGBA image
-	dest := image.NewRGBA(image.Rect(0, 0, 297, 210.0))
-	gc := draw2d.NewGraphicContext(dest)
-	// Draw Android logo
-	fn, err := draw(gc, "png")
-	if err != nil {
-		t.Errorf("Drawing %q failed: %v", fn, err)
-		return
-	}
-	// Save to png
-	err = draw2d.SaveToPngFile(fn, dest)
-	if err != nil {
-		t.Errorf("Saving %q failed: %v", fn, err)
-	}
-}
-
 func TestSampleAndroid(t *testing.T) {
 	test(t, android.Main)
 }
@@ -49,3 +31,7 @@ func TestSampleHelloWorld(t *testing.T) {
 func TestSampleFrameImage(t *testing.T) {
 	test(t, frameimage.Main)
 }
+
+func TestSampleLine(t *testing.T) {
+	test(t, line.Main)
+}

test_test.go

@@ -0,0 +1,27 @@
+// Package draw2d_test gives test coverage with the command:
+// go test -cover ./... | grep -v "no test"
+package draw2d_test
+
+import (
+	"image"
+	"testing"
+
+	"github.com/stanim/draw2d"
+)
+
+func test(t *testing.T, draw draw2d.Sample) {
+	// Initialize the graphic context on an RGBA image
+	dest := image.NewRGBA(image.Rect(0, 0, 297, 210.0))
+	gc := draw2d.NewGraphicContext(dest)
+	// Draw Android logo
+	fn, err := draw(gc, "png")
+	if err != nil {
+		t.Errorf("Drawing %q failed: %v", fn, err)
+		return
+	}
+	// Save to png
+	err = draw2d.SaveToPngFile(fn, dest)
+	if err != nil {
+		t.Errorf("Saving %q failed: %v", fn, err)
+	}
+}