Add a few tests for building images

It's nowhere near exhaustive, but it's a start.

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

Closes: #59
Approved by: rhatdan

tests/bud.bats

@@ -0,0 +1,170 @@
+#!/usr/bin/env bats
+
+load helpers
+
+@test "bud-from-scratch" {
+  target=scratch-image
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} ${TESTSDIR}/bud/from-scratch
+  cid=$(buildah from ${target})
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}
+
+@test "bud-from-multiple-files-one-from" {
+  target=scratch-image
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} -f ${TESTSDIR}/bud/from-multiple-files/Dockerfile1.scratch -f ${TESTSDIR}/bud/from-multiple-files/Dockerfile2.nofrom
+  cid=$(buildah from ${target})
+  root=$(buildah mount ${cid})
+  cmp $root/Dockerfile1 ${TESTSDIR}/bud/from-multiple-files/Dockerfile1.scratch
+  cmp $root/Dockerfile2.nofrom ${TESTSDIR}/bud/from-multiple-files/Dockerfile2.nofrom
+  run test -s $root/etc/passwd
+  [ "$status" -ne 0 ]
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+
+  target=alpine-image
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} -f ${TESTSDIR}/bud/from-multiple-files/Dockerfile1.alpine -f ${TESTSDIR}/bud/from-multiple-files/Dockerfile2.nofrom
+  cid=$(buildah from ${target})
+  root=$(buildah mount ${cid})
+  cmp $root/Dockerfile1 ${TESTSDIR}/bud/from-multiple-files/Dockerfile1.alpine
+  cmp $root/Dockerfile2.nofrom ${TESTSDIR}/bud/from-multiple-files/Dockerfile2.nofrom
+  run test -s $root/etc/passwd
+  [ "$status" -eq 0 ]
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}
+
+@test "bud-from-multiple-files-two-froms" {
+  target=scratch-image
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} -f ${TESTSDIR}/bud/from-multiple-files/Dockerfile1.scratch -f ${TESTSDIR}/bud/from-multiple-files/Dockerfile2.withfrom
+  cid=$(buildah from ${target})
+  root=$(buildah mount ${cid})
+  cmp $root/Dockerfile1 ${TESTSDIR}/bud/from-multiple-files/Dockerfile1.scratch
+  cmp $root/Dockerfile2.withfrom ${TESTSDIR}/bud/from-multiple-files/Dockerfile2.withfrom
+  run test -s $root/etc/passwd
+  [ "$status" -ne 0 ]
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+
+  target=alpine-image
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} -f ${TESTSDIR}/bud/from-multiple-files/Dockerfile1.alpine -f ${TESTSDIR}/bud/from-multiple-files/Dockerfile2.withfrom
+  cid=$(buildah from ${target})
+  root=$(buildah mount ${cid})
+  cmp $root/Dockerfile1 ${TESTSDIR}/bud/from-multiple-files/Dockerfile1.alpine
+  cmp $root/Dockerfile2.withfrom ${TESTSDIR}/bud/from-multiple-files/Dockerfile2.withfrom
+  run test -s $root/etc/passwd
+  [ "$status" -eq 0 ]
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}
+
+@test "bud-preserve-subvolumes" {
+  # This Dockerfile needs us to be able to handle a working RUN instruction.
+  if ! which runc ; then
+    skip
+  fi
+  target=volume-image
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} ${TESTSDIR}/bud/preserve-volumes
+  cid=$(buildah from ${target})
+  root=$(buildah mount ${cid})
+  test -s $root/vol/subvol/subsubvol/subsubvolfile
+  run test -s $root/vol/subvol/subvolfile
+  [ "$status" -ne 0 ]
+  test -s $root/vol/volfile
+  run test -s $root/vol/anothervolfile
+  [ "$status" -ne 0 ]
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}
+
+@test "bud-http-Dockerfile" {
+  starthttpd ${TESTSDIR}/bud/from-scratch
+  target=scratch-image
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} -f http://0.0.0.0:${HTTP_SERVER_PORT}/Dockerfile .
+  stophttpd
+  cid=$(buildah from ${target})
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}
+
+@test "bud-http-context-with-Dockerfile" {
+  starthttpd ${TESTSDIR}/bud/http-context
+  target=scratch-image
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} http://0.0.0.0:${HTTP_SERVER_PORT}/context.tar
+  stophttpd
+  cid=$(buildah from ${target})
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}
+
+@test "bud-http-context-dir-with-Dockerfile-pre" {
+  starthttpd ${TESTSDIR}/bud/http-context-subdir
+  target=scratch-image
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} -f context/Dockerfile http://0.0.0.0:${HTTP_SERVER_PORT}/context.tar
+  stophttpd
+  cid=$(buildah from ${target})
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}
+
+@test "bud-http-context-dir-with-Dockerfile-post" {
+  starthttpd ${TESTSDIR}/bud/http-context-subdir
+  target=scratch-image
+  buildah bud http://0.0.0.0:${HTTP_SERVER_PORT}/context.tar --signature-policy ${TESTSDIR}/policy.json -t ${target} -f context/Dockerfile
+  stophttpd
+  cid=$(buildah from ${target})
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}
+
+@test "bud-git-context" {
+  # We need git and ssh to be around to handle cloning a repository.
+  if ! which git ; then
+    skip
+  fi
+  if ! which ssh ; then
+    skip
+  fi
+  target=giturl-image
+  # Any repo should do, but this one is small and is FROM: scratch.
+  gitrepo=git://github.com/projectatomic/nulecule-library
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} "${gitrepo}"
+  cid=$(buildah from ${target})
+  buildah rm ${cid}
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}
+
+@test "bud-github-context" {
+  target=github-image
+  # Any repo should do, but this one is small and is FROM: scratch.
+  gitrepo=github.com/projectatomic/nulecule-library
+  buildah bud --signature-policy ${TESTSDIR}/policy.json -t ${target} "${gitrepo}"
+  cid=$(buildah from ${target})
+  buildah rm ${cid}
+  buildah --debug=false images -q
+  buildah rmi $(buildah --debug=false images -q)
+  run buildah --debug=false images -q
+  [ "$output" = "" ]
+}

tests/bud/from-multiple-files/Dockerfile1.alpine

@@ -0,0 +1,2 @@
+FROM alpine
+COPY Dockerfile1.alpine /Dockerfile1

tests/bud/from-multiple-files/Dockerfile1.scratch

@@ -0,0 +1,2 @@
+FROM scratch
+COPY Dockerfile1.scratch /Dockerfile1

tests/bud/from-multiple-files/Dockerfile2.nofrom

@@ -0,0 +1 @@
+COPY Dockerfile2.nofrom /

tests/bud/from-multiple-files/Dockerfile2.withfrom

@@ -0,0 +1,2 @@
+FROM alpine
+COPY Dockerfile2.withfrom /

tests/bud/from-scratch/Dockerfile

@@ -0,0 +1 @@
+FROM scratch

tests/bud/preserve-volumes/Dockerfile

@@ -0,0 +1,16 @@
+FROM alpine
+RUN mkdir -p /vol/subvol/subsubvol
+RUN dd if=/dev/zero bs=512 count=1 of=/vol/subvol/subsubvol/subsubvolfile
+VOLUME /vol/subvol
+# At this point, the contents below /vol/subvol should be frozen.
+RUN dd if=/dev/zero bs=512 count=1 of=/vol/subvol/subvolfile
+# In particular, /vol/subvol/subvolfile should be wiped out.
+RUN dd if=/dev/zero bs=512 count=1 of=/vol/volfile
+# However, /vol/volfile should exist.
+VOLUME /vol
+# And this should be redundant.
+VOLUME /vol/subvol
+# And now we've frozen /vol.
+RUN dd if=/dev/zero bs=512 count=1 of=/vol/anothervolfile
+# Which means that in the image we're about to commit, /vol/anothervolfile
+# shouldn't exist, either.

tests/helpers.bash

@@ -12,7 +12,7 @@ function setup() {
 }
 
 function starthttpd() {
-	pushd ${2:-${BATS_TMPDIR}} > /dev/null
+	pushd ${2:-${TESTDIR}} > /dev/null
 	cp ${TESTSDIR}/serve.go .
 	go build serve.go
 	HTTP_SERVER_PORT=$((RANDOM+32768))