moving test info to dev docs

builtin/providers/vsphere/README.md

@@ -8,15 +8,15 @@ Thank-you [@tkak](https://github.com/tkak) and [Rakuten, Inc.](https://github.co
 
 Both [README.md](../../../README.md) and [BUILDING.md](../../../BUILDING.md) should be read first!
 
-## Base API Dependency ~ [govmomi](https://github.com/vmware/govmomi) 
+## Base API Dependency ~ [govmomi](https://github.com/vmware/govmomi)
 
 This provider utilizes [govmomi](https://github.com/vmware/govmomi) Go Library for communicating to VMware vSphere APIs (ESXi and/or vCenter).
 Because of the dependency this provider is compatible with VMware systems that are supported by govmomi. Much thanks to the dev team that maintains govmomi, and
 even more thanks to their guidance with the development of this provider. We have had many issues answered by the govmomi team!
 
 #### vSphere CLI ~ [govc](https://github.com/vmware/govmomi/blob/master/govc/README.md)
 
-One of the great tools that govmomi contains is [govc](https://github.com/vmware/govmomi/blob/master/govc/README.md). It is a command line tool for using the govmomi API. Not only is it a tool to use, but also it's 
+One of the great tools that govmomi contains is [govc](https://github.com/vmware/govmomi/blob/master/govc/README.md). It is a command line tool for using the govmomi API. Not only is it a tool to use, but also it's
 [source base](https://github.com/vmware/govmomi/blob/master/govc/) is a great resource of examples on how to exercise the API.
 
 ## Required privileges for running Terraform as non-administrative user
@@ -30,13 +30,13 @@ Click on "+" icon (Create role action), give it appropraite name and select foll
  - Remove file
  - Update virtual machine files
  - Update virtual machine metadata
- 
+
  * Folder (all)
  - Create folder
  - Delete folder
  - Move folder
  - Rename folder
- 
+
  * Network
  - Assign network
 
@@ -54,4 +54,59 @@ Click on "+" icon (Create role action), give it appropraite name and select foll
 These settings were tested with [vSphere 6.0](https://pubs.vmware.com/vsphere-60/index.jsp?topic=%2Fcom.vmware.vsphere.security.doc%2FGUID-18071E9A-EED1-4968-8D51-E0B4F526FDA3.html) and [vSphere 5.5](https://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.security.doc%2FGUID-18071E9A-EED1-4968-8D51-E0B4F526FDA3.html). For additional information on roles and permissions, please refer to official VMware documentation.
 
 This section is a work in progress and additional contributions are more than welcome.
-
+
+# Acceptance Tests
+
+The VMware vSphere provider's acceptance tests require the above provider
+configuration fields to be set using the documented environment variables.
+
+## Environment Variables
+
+In addition, the following environment variables are used in tests, and must be
+set to valid values for your VMware vSphere environment:
+
+ * VSPHERE\_IPV4\_GATEWAY
+ * VSPHERE\_IPV4\_ADDRESS
+ * VSPHERE\_IPV6\_GATEWAY
+ * VSPHERE\_IPV6\_ADDRESS
+ * VSPHERE\_NETWORK\_LABEL
+ * VSPHERE\_NETWORK\_LABEL\_DHCP
+ * VSPHERE\_TEMPLATE
+
+The following environment variables depend on your vSphere environment:
+
+ * VSPHERE\_DATACENTER
+ * VSPHERE\_CLUSTER
+ * VSPHERE\_RESOURCE\_POOL
+ * VSPHERE\_DATASTORE
+
+The following additional environment variables are needed for running the
+"Mount ISO as CDROM media" acceptance tests.
+
+ * VSPHERE\_CDROM\_DATASTORE
+ * VSPHERE\_CDROM\_PATH
+
+ The following environment variable is needed from running the "Create With Existing VMDK"
+ acceptance tests
+
+ * VSPHERE\_VMDK\_PATH
+
+ Refer to the TF documentation in regards to logging but at the current time
+
+ * TF\_LOG=DEBUG
+
+ As always refer to the acceptance test source code for the latest variables.
+
+## Running tests
+
+Once all these variables are in place, the tests can be run like this:
+
+```
+make testacc TEST=./builtin/providers/vsphere
+```
+
+In order to run a single test `TESTARGS` Envrionment variable can be set:
+
+```
+export TESTARGS="-run TestAccVSphereVirtualMachine_ipv4Andipv6"
+```