Add integ test for unpublished ports in ps o/p

- This is a test to assert the fix #13734

Signed-off-by: Alessandro Boch <aboch@docker.com>

integration-cli/docker_cli_port_test.go

@@ -1,8 +1,10 @@
 package main
 
 import (
+	"fmt"
 	"net"
 	"os/exec"
+	"regexp"
 	"sort"
 	"strings"
 
@@ -221,3 +223,96 @@ func (s *DockerSuite) TestPortExposeHostBinding(c *check.C) {
 		c.Error("Port is still bound after the Container is removed")
 	}
 }
+
+func stopRemoveContainer(id string, c *check.C) {
+	runCmd := exec.Command(dockerBinary, "rm", "-f", id)
+	_, _, err := runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+}
+
+func (s *DockerSuite) TestUnpublishedPortsInPsOutput(c *check.C) {
+	// Run busybox with command line expose (equivalent to EXPOSE in image's Dockerfile) for the following ports
+	port1 := 80
+	port2 := 443
+	expose1 := fmt.Sprintf("--expose=%d", port1)
+	expose2 := fmt.Sprintf("--expose=%d", port2)
+	runCmd := exec.Command(dockerBinary, "run", "-d", expose1, expose2, "busybox", "sleep", "5")
+	out, _, err := runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+
+	// Check docker ps o/p for last created container reports the unpublished ports
+	unpPort1 := fmt.Sprintf("%d/tcp", port1)
+	unpPort2 := fmt.Sprintf("%d/tcp", port2)
+	runCmd = exec.Command(dockerBinary, "ps", "-n=1")
+	out, _, err = runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+	if !strings.Contains(out, unpPort1) || !strings.Contains(out, unpPort2) {
+		c.Errorf("Missing unpublished ports(s) (%s, %s) in docker ps output: %s", unpPort1, unpPort2, out)
+	}
+
+	// Run the container forcing to publish the exposed ports
+	runCmd = exec.Command(dockerBinary, "run", "-d", "-P", expose1, expose2, "busybox", "sleep", "5")
+	out, _, err = runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+
+	// Check docker ps o/p for last created container reports the exposed ports in the port bindings
+	expBndRegx1 := regexp.MustCompile(`0.0.0.0:\d\d\d\d\d->` + unpPort1)
+	expBndRegx2 := regexp.MustCompile(`0.0.0.0:\d\d\d\d\d->` + unpPort2)
+	runCmd = exec.Command(dockerBinary, "ps", "-n=1")
+	out, _, err = runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+	if !expBndRegx1.MatchString(out) || !expBndRegx2.MatchString(out) {
+		c.Errorf("Cannot find expected port binding ports(s) (0.0.0.0:xxxxx->%s, 0.0.0.0:xxxxx->%s) in docker ps output:\n%s",
+			unpPort1, unpPort2, out)
+	}
+
+	// Run the container specifying explicit port bindings for the exposed ports
+	offset := 10000
+	pFlag1 := fmt.Sprintf("%d:%d", offset+port1, port1)
+	pFlag2 := fmt.Sprintf("%d:%d", offset+port2, port2)
+	runCmd = exec.Command(dockerBinary, "run", "-d", "-p", pFlag1, "-p", pFlag2, expose1, expose2, "busybox", "sleep", "5")
+	out, _, err = runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+	id := strings.TrimSpace(out)
+
+	// Check docker ps o/p for last created container reports the specified port mappings
+	expBnd1 := fmt.Sprintf("0.0.0.0:%d->%s", offset+port1, unpPort1)
+	expBnd2 := fmt.Sprintf("0.0.0.0:%d->%s", offset+port2, unpPort2)
+	runCmd = exec.Command(dockerBinary, "ps", "-n=1")
+	out, _, err = runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+	if !strings.Contains(out, expBnd1) || !strings.Contains(out, expBnd2) {
+		c.Errorf("Cannot find expected port binding(s) (%s, %s) in docker ps output: %s", expBnd1, expBnd2, out)
+	}
+	// Remove container now otherwise it will interfeer with next test
+	stopRemoveContainer(id, c)
+
+	// Run the container with explicit port bindings and no exposed ports
+	runCmd = exec.Command(dockerBinary, "run", "-d", "-p", pFlag1, "-p", pFlag2, "busybox", "sleep", "5")
+	out, _, err = runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+	id = strings.TrimSpace(out)
+
+	// Check docker ps o/p for last created container reports the specified port mappings
+	runCmd = exec.Command(dockerBinary, "ps", "-n=1")
+	out, _, err = runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+	if !strings.Contains(out, expBnd1) || !strings.Contains(out, expBnd2) {
+		c.Errorf("Cannot find expected port binding(s) (%s, %s) in docker ps output: %s", expBnd1, expBnd2, out)
+	}
+	// Remove container now otherwise it will interfeer with next test
+	stopRemoveContainer(id, c)
+
+	// Run the container with one unpublished exposed port and one explicit port binding
+	runCmd = exec.Command(dockerBinary, "run", "-d", expose1, "-p", pFlag2, "busybox", "sleep", "5")
+	out, _, err = runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+
+	// Check docker ps o/p for last created container reports the specified unpublished port and port mapping
+	runCmd = exec.Command(dockerBinary, "ps", "-n=1")
+	out, _, err = runCommandWithOutput(runCmd)
+	c.Assert(err, check.IsNil)
+	if !strings.Contains(out, unpPort1) || !strings.Contains(out, expBnd2) {
+		c.Errorf("Missing unpublished ports or port binding (%s, %s) in docker ps output: %s", unpPort1, expBnd2, out)
+	}
+}