kpod attach

Attach to a running container

Signed-off-by: baude <bbaude@redhat.com>

Closes: #95
Approved by: rhatdan

test/kpod_attach.bats

@@ -0,0 +1,32 @@
+#!/usr/bin/env bats
+
+load helpers
+
+function teardown() {
+    cleanup_test
+}
+
+function setup() {
+    copy_images
+}
+
+@test "attach to a bogus container" {
+    run bash -c "${KPOD_BINARY} ${KPOD_OPTIONS} attach foobar"
+    echo "$output"
+    [ "$status" -eq 1 ]
+}
+
+@test "attach to non-running container" {
+    ${KPOD_BINARY} ${KPOD_OPTIONS} create --name foobar -d -i ${ALPINE} ls
+    run bash -c "${KPOD_BINARY} ${KPOD_OPTIONS} attach foobar"
+    echo "$output"
+    [ "$status" -eq 1 ]
+}
+
+@test "attach to multiple containers" {
+    ${KPOD_BINARY} ${KPOD_OPTIONS} run --name foobar1 -d -i ${ALPINE} /bin/sh
+    ${KPOD_BINARY} ${KPOD_OPTIONS} run --name foobar2 -d -i ${ALPINE} /bin/sh
+    run bash -c "${KPOD_BINARY} ${KPOD_OPTIONS} attach foobar1 foobar2"
+    echo "$output"
+    [ "$status" -eq 1 ]
+}