diff --git a/tests/test_tftest.py b/tests/test_tftest.py
index dd125d0..10c7696 100644
--- a/tests/test_tftest.py
+++ b/tests/test_tftest.py
@@ -21,22 +21,28 @@
 
 
 _ARGS_TESTS = (
+    ({'auto_approve': True}, ['-auto-approve']),
     ({'auto_approve': False}, []),
     ({'backend': True}, []),
     ({'backend': None}, []),
     ({'backend': False}, ['-backend=false']),
     ({'color': True}, []),
-    ({'input': True}, []),
-    ({'json_format': False}, []),
-    ({'lock': True}, []),
-    ({'plugin_dir': ''}, []),
-    ({'auto_approve': True}, ['-auto-approve']),
     ({'color': False}, ['-no-color']),
+    ({'color': False, 'input': False}, ['-no-color', '-input=false']),
+    ({'force_copy': True}, ['-force-copy']),
+    ({'force_copy': None}, []),
+    ({'force_copy': False}, []),
+    ({'input': True}, []),
     ({'input': False}, ['-input=false']),
     ({'json_format': True}, ['-json']),
+    ({'json_format': False}, []),
+    ({'lock': True}, []),
     ({'lock': False}, ['-lock=false']),
+    ({'plugin_dir': ''}, []),
     ({'plugin_dir': 'abc'}, ['-plugin-dir', 'abc']),
-    ({'color': False, 'input': False}, ['-no-color', '-input=false'])
+    ({'refresh': True}, []),
+    ({'refresh': None}, []),
+    ({'refresh': False}, ['-refresh=false']),
 )
 _AUTORUN_CALLS = [
     ['terraform', 'init', '-no-color', '-input=false'],
diff --git a/tftest.py b/tftest.py
index 7d1a388..52906e7 100644
--- a/tftest.py
+++ b/tftest.py
@@ -63,6 +63,8 @@ def parse_args(init_vars=None, tf_vars=None, **kw):
     cmd_args.append('-backend=false')
   if kw.get('color') is False:
     cmd_args.append('-no-color')
+  if kw.get('force_copy'):
+    cmd_args.append('-force-copy')
   if kw.get('input') is False:
     cmd_args.append('-input=false')
   if kw.get('json_format') is True:
@@ -71,6 +73,8 @@ def parse_args(init_vars=None, tf_vars=None, **kw):
     cmd_args.append('-lock=false')
   if kw.get('plugin_dir'):
     cmd_args += ['-plugin-dir', kw['plugin_dir']]
+  if kw.get('refresh') is False:
+    cmd_args.append('-refresh=false')
   if isinstance(init_vars, dict):
     cmd_args += ['-backend-config=\'{}={}\''.format(k, v)
                  for k, v in init_vars.items()]
@@ -282,15 +286,18 @@ def teardown(self, tf_vars=None):
     except TerraformTestError:
       _LOGGER.exception('error in teardown destroy')
 
-  def init(self, input=False, color=False, plugin_dir=None, init_vars=None, backend=True):
+  def init(self, input=False, color=False, force_copy=False, plugin_dir=None,
+           init_vars=None, backend=True):
     """Run Terraform init command."""
     cmd_args = parse_args(input=input, color=color, backend=backend,
-                          plugin_dir=plugin_dir, init_vars=init_vars)
+                          force_copy=force_copy, plugin_dir=plugin_dir,
+                          init_vars=init_vars)
     return self.execute_command('init', *cmd_args).out
 
-  def plan(self, input=False, color=False, tf_vars=None):
+  def plan(self, input=False, color=False, refresh=True, tf_vars=None):
     """Run Terraform plan command."""
-    cmd_args = parse_args(input=input, color=color, tf_vars=tf_vars)
+    cmd_args = parse_args(input=input, color=color,
+                          refresh=refresh, tf_vars=tf_vars)
     return self.execute_command('plan', *cmd_args).out
 
   def apply(self, input=False, color=False, auto_approve=True, tf_vars=None):