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Update diff apply test to check sub directories

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
(cherry picked from commit 5c05b8447d06793530e3d860b99a6e878685275a)
Signed-off-by: Tibor Vass <tibor@docker.com>

Derek McGowan authored on 2016/07/27 03:56:38
Showing 2 changed files
... ...
@@ -199,6 +199,7 @@ func DriverTestDiffApply(t testing.TB, fileCount int, drivername string, driverO
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 	upper := stringid.GenerateRandomID()
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 	deleteFile := "file-remove.txt"
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 	deleteFileContent := []byte("This file should get removed in upper!")
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+	deleteDir := "var/lib"
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 	if err := driver.Create(base, "", "", nil); err != nil {
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 		t.Fatal(err)
... ...
@@ -212,6 +213,10 @@ func DriverTestDiffApply(t testing.TB, fileCount int, drivername string, driverO
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 		t.Fatal(err)
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 	}
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+	if err := addDirectory(driver, base, deleteDir); err != nil {
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+		t.Fatal(err)
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+	}
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+
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 	if err := driver.Create(upper, base, "", nil); err != nil {
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 		t.Fatal(err)
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 	}
... ...
@@ -220,7 +225,7 @@ func DriverTestDiffApply(t testing.TB, fileCount int, drivername string, driverO
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 		t.Fatal(err)
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 	}
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-	if err := removeFile(driver, upper, deleteFile); err != nil {
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+	if err := removeAll(driver, upper, deleteFile, deleteDir); err != nil {
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 		t.Fatal(err)
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 	}
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... ...
@@ -271,6 +276,10 @@ func DriverTestDiffApply(t testing.TB, fileCount int, drivername string, driverO
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 	if err := checkFileRemoved(driver, diff, deleteFile); err != nil {
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 		t.Fatal(err)
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 	}
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+
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+	if err := checkFileRemoved(driver, diff, deleteDir); err != nil {
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+		t.Fatal(err)
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+	}
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 }
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 // DriverTestChanges tests computed changes on a layer matches changes made
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@@ -78,14 +78,29 @@ func addFile(drv graphdriver.Driver, layer, filename string, content []byte) err
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 	return ioutil.WriteFile(path.Join(root, filename), content, 0755)
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 }
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-func removeFile(drv graphdriver.Driver, layer, filename string) error {
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+func addDirectory(drv graphdriver.Driver, layer, dir string) error {
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 	root, err := drv.Get(layer, "")
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 	if err != nil {
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 		return err
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 	}
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 	defer drv.Put(layer)
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-	return os.Remove(path.Join(root, filename))
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+	return os.MkdirAll(path.Join(root, dir), 0755)
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+}
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+
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+func removeAll(drv graphdriver.Driver, layer string, names ...string) error {
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+	root, err := drv.Get(layer, "")
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+	if err != nil {
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+		return err
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+	}
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+	defer drv.Put(layer)
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+
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+	for _, filename := range names {
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+		if err := os.RemoveAll(path.Join(root, filename)); err != nil {
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+			return err
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+		}
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+	}
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+	return nil
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 }
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 func checkFileRemoved(drv graphdriver.Driver, layer, filename string) error {