add ansible tests for docker builder

test/fixtures/provisioner-ansible/docker.json

@@ -0,0 +1,26 @@
+{
+    "variables": {},
+    "provisioners": [
+      {
+        "type": "shell",
+        "inline": [
+          "apt-get update",
+          "apt-get -y install python"
+        ]
+      }, {
+        "type":  "ansible",
+        "playbook_file": "./playbook.yml",
+        "extra_arguments": [
+        ],
+        "sftp_command": "/usr/bin/false",
+        "use_sftp": false
+      }
+    ],
+    "builders": [
+      {
+        "type": "docker",
+        "image": "debian:jessie",
+        "discard": true
+      }
+    ]
+}

test/provisioner_ansible.bats

@@ -43,6 +43,12 @@ teardown() {
     rm -rf $FIXTURE_ROOT/fetched-dir
 }
 
+@test "ansible provisioner: build docker.json" {
+    cd $FIXTURE_ROOT
+    run packer build ${USER_VARS} $FIXTURE_ROOT/docker.json
+    [ "$status" -eq 0 ]
+    diff -r dir fetched-dir/default/tmp/remote-dir > /dev/null
+}
 @test "ansible provisioner: build minimal.json" {
     cd $FIXTURE_ROOT
     run packer build ${USER_VARS} $FIXTURE_ROOT/minimal.json