Add support for dangling filter to volumes

The dangling filter determine whether a volume is dangling - IE,
it has no containers attached using it. Unlike our other filters,
this one is a boolean - must be true or false, not arbitrary
values.

Signed-off-by: Matthew Heon <matthew.heon@pm.me>

1 files changed, 27 insertions, 0 deletions

diff --git a/test/e2e/volume_ls_test.go b/test/e2e/volume_ls_test.go
index 7664e64bb..d2d75af9e 100644
--- a/test/e2e/volume_ls_test.go
+++ b/test/e2e/volume_ls_test.go
@@ -1,6 +1,7 @@
 package integration
 
 import (
+	"fmt"
 	"os"
 
 	. "github.com/containers/libpod/test/utils"
@@ -82,4 +83,30 @@ var _ = Describe("Podman volume ls", func() {
 		Expect(len(session.OutputToStringArray())).To(Equal(2))
 		Expect(session.OutputToStringArray()[1]).To(ContainSubstring(volName))
 	})
+
+	It("podman volume ls with --filter dangling", func() {
+		volName1 := "volume1"
+		session := podmanTest.Podman([]string{"volume", "create", volName1})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(0))
+
+		volName2 := "volume2"
+		session2 := podmanTest.Podman([]string{"volume", "create", volName2})
+		session2.WaitWithDefaultTimeout()
+		Expect(session2.ExitCode()).To(Equal(0))
+
+		ctr := podmanTest.Podman([]string{"create", "-v", fmt.Sprintf("%s:/test", volName2), ALPINE, "sh"})
+		ctr.WaitWithDefaultTimeout()
+		Expect(ctr.ExitCode()).To(Equal(0))
+
+		lsNoDangling := podmanTest.Podman([]string{"volume", "ls", "--filter", "dangling=false", "--quiet"})
+		lsNoDangling.WaitWithDefaultTimeout()
+		Expect(lsNoDangling.ExitCode()).To(Equal(0))
+		Expect(lsNoDangling.OutputToString()).To(ContainSubstring(volName2))
+
+		lsDangling := podmanTest.Podman([]string{"volume", "ls", "--filter", "dangling=true", "--quiet"})
+		lsDangling.WaitWithDefaultTimeout()
+		Expect(lsDangling.ExitCode()).To(Equal(0))
+		Expect(lsDangling.OutputToString()).To(ContainSubstring(volName1))
+	})
 })