No HCL object could be decoded

[zachzeid]

• terrascan version: 0.1.0 (development mode)
• Python version: 3.6.1
• Operating System: OS X 10.13.6

Description

Trying to run tests against terraform templates with terrascan set up in development

What I Did

terrascan -l . -t all

This is one of many similar tracebacks

ERROR: test_aws_security_group_rule_open (terrascan.checks.security_group.TestSecurityGroups)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/zachary.zeid/github/terrascan/terrascan/.eggs/terraform_validate-2.5.0-py3.6.egg/terraform_validate/terraform_validate.py", line 464, in parse_terraform_directory
    hcl.loads(new_terraform)
  File "/Users/zachary.zeid/github/terrascan/terrascan/.eggs/pyhcl-0.3.10-py3.6.egg/hcl/api.py", line 61, in loads
    if isHcl(s):
  File "/Users/zachary.zeid/github/terrascan/terrascan/.eggs/pyhcl-0.3.10-py3.6.egg/hcl/api.py", line 39, in isHcl
    raise ValueError("No HCL object could be decoded")
ValueError: No HCL object could be decoded

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/zachary.zeid/github/terrascan/terrascan/terrascan/checks/security_group.py", line 21, in setUp
    self.v = terraform_validate.Validator(self.path)
  File "/Users/zachary.zeid/github/terrascan/terrascan/.eggs/terraform_validate-2.5.0-py3.6.egg/terraform_validate/terraform_validate.py", line 431, in __init__
    self.terraform_config = self.parse_terraform_directory(path)
  File "/Users/zachary.zeid/github/terrascan/terrascan/.eggs/terraform_validate-2.5.0-py3.6.egg/terraform_validate/terraform_validate.py", line 466, in parse_terraform_directory
    raise TerraformSyntaxException("Invalid terraform configuration in {0}\n{1}".format(os.path.join(directory,file),e))
terraform_validate.terraform_validate.TerraformSyntaxException: Invalid terraform configuration in /Users/zachary.zeid/github/terrascan/terrascan/variables.tf
No HCL object could be decoded

----------------------------------------------------------------------
Ran 5 tests in 0.036s

FAILED (errors=5)  ```

[zachzeid]

I found the resolution to this issue, as my variables.tf file was empty. However, this error needs to have better error handling.