diff --git a/kibot/out_compress.py b/kibot/out_compress.py
index 853c7bb8..089abcb4 100644
--- a/kibot/out_compress.py
+++ b/kibot/out_compress.py
@@ -65,7 +65,7 @@ class CompressOptions(BaseOptions):
         super().config()
         if isinstance(self.files, type):
             self.files = []
-            logger.warning(W_EMPTYZIP+' No files provided, creating an empty archive')
+            logger.warning(W_EMPTYZIP+'No files provided, creating an empty archive')
 
     def create_zip(self, output, files):
         with ZipFile(output, 'w', compression=self.ZIP_ALGORITHMS[self.compression], compresslevel=9) as zip:
@@ -90,7 +90,7 @@ class CompressOptions(BaseOptions):
             except FileNotFoundError:
                 logger.error('Missing `rar` command, install it')
                 exit(MISSING_TOOL)
-            except CalledProcessError as e:  # pragma: no cover
+            except CalledProcessError as e:
                 logger.error('Failed to invoke rar command, error {}'.format(e.returncode))
                 if e.output:
                     logger.debug('Output from command: '+e.output.decode())
diff --git a/tests/test_plot/test_gerber.py b/tests/test_plot/test_gerber.py
index 72db627b..924063ed 100644
--- a/tests/test_plot/test_gerber.py
+++ b/tests/test_plot/test_gerber.py
@@ -96,12 +96,14 @@ def test_gerber_2layer():
 def test_gerber_inner_ok():
     prj = 'good-project'
     ctx = context.TestContext('Gerber_Inner', prj, 'gerber_inner', GERBER_DIR)
+    rarfile = prj+'-result.rar'
+    ctx.create_dummy_out_file(rarfile)
     ctx.run()
     files = [prj+'_GND_Cu.gbr', prj+'_Signal1.gbr', 'test-'+prj+'.gbrjob']
     files = [os.path.join(GERBER_DIR, f) for f in files]
     for f in files:
         ctx.expect_out_file(f)
-    ctx.test_compress(prj+'-result.rar', files)
+    ctx.test_compress(rarfile, files)
     ctx.clean_up()
 
 
diff --git a/tests/test_plot/test_misc.py b/tests/test_plot/test_misc.py
index 6073351f..79a09b8d 100644
--- a/tests/test_plot/test_misc.py
+++ b/tests/test_plot/test_misc.py
@@ -31,6 +31,9 @@ pytest-3 --log-cli-level debug
 import os
 import sys
 import shutil
+import pytest
+import coverage
+from subprocess import CalledProcessError
 import logging
 # Look for the 'utils' module from where the script is running
 prev_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
@@ -42,11 +45,15 @@ prev_dir = os.path.dirname(prev_dir)
 if prev_dir not in sys.path:
     sys.path.insert(0, prev_dir)
 from kibot.misc import (EXIT_BAD_ARGS, EXIT_BAD_CONFIG, NO_PCB_FILE, NO_SCH_FILE, EXAMPLE_CFG, WONT_OVERWRITE, CORRUPTED_PCB,
-                        PCBDRAW_ERR, NO_PCBNEW_MODULE, NO_YAML_MODULE)
+                        PCBDRAW_ERR, NO_PCBNEW_MODULE, NO_YAML_MODULE, MISSING_TOOL, WRONG_INSTALL)
+from kibot.kiplot import load_actions
+from kibot.registrable import RegOutput
+from kibot.gs import GS
 
 
 POS_DIR = 'positiondir'
 MK_TARGETS = ['position']
+cov = coverage.Coverage()
 
 
 def test_skip_pre_and_outputs():
@@ -566,3 +573,75 @@ def test_makefile_1():
     assert os.path.abspath(targets[targets['position']]) == ctx.board_file
     logging.debug('- Target `position` OK')
     ctx.clean_up()
+
+
+def test_empty_zip():
+    prj = 'test_v5'
+    ctx = context.TestContext('test_empty_zip', prj, 'empty_zip', '')
+    ctx.run()
+    ctx.expect_out_file(prj+'-result.zip')
+    ctx.search_err('No files provided, creating an empty archive')
+    ctx.clean_up()
+
+
+def mocked_check_output(cmd, stderr=None):
+    raise FileNotFoundError()
+
+
+def run_compress(ctx):
+    # Load the plug-ins
+    load_actions()
+    # Create a compress object with the dummy file as source
+    out = RegOutput.get_class_for('compress')()
+    out.set_tree({'options': {'format': 'RAR', 'files': [{'source': ctx.get_out_path('*')}]}})
+    out.config()
+    # Setup the GS output dir, needed for the output path
+    GS.out_dir = '.'
+    # Start coverage
+    cov.load()
+    cov.start()
+    # Run the compression and catch the error
+    with pytest.raises(SystemExit) as pytest_wrapped_e:
+        out.run('')
+    # Stop coverage
+    cov.stop()
+    cov.save()
+    return pytest_wrapped_e
+
+
+def test_no_rar(caplog, monkeypatch):
+    # Create a silly context to get the output path
+    ctx = context.TestContext('test_no_rar', 'test_v5', 'empty_zip', '')
+    # The file we pretend to compress
+    ctx.create_dummy_out_file('Test.txt')
+    # We will patch subprocess.check_output to make rar fail
+    with monkeypatch.context() as m:
+        m.setattr("subprocess.check_output", mocked_check_output)
+        pytest_wrapped_e = run_compress(ctx)
+    # Check we exited because rar isn't installed
+    assert pytest_wrapped_e.type == SystemExit
+    assert pytest_wrapped_e.value.code == MISSING_TOOL
+    assert "Missing `rar` command" in caplog.text
+
+
+def mocked_check_output_2(cmd, stderr=None):
+    e = CalledProcessError(10, 'rar')
+    e.output = b'THE_ERROR'
+    raise e
+
+
+def test_rar_fail(caplog, monkeypatch):
+    # Create a silly context to get the output path
+    ctx = context.TestContext('test_no_rar', 'test_v5', 'empty_zip', '')
+    # The file we pretend to compress
+    ctx.create_dummy_out_file('Test.txt')
+    # We will patch subprocess.check_output to make rar fail
+    with monkeypatch.context() as m:
+        m.setattr("subprocess.check_output", mocked_check_output_2)
+        pytest_wrapped_e = run_compress(ctx)
+    # Check we exited because rar isn't installed
+    assert pytest_wrapped_e.type == SystemExit
+    assert pytest_wrapped_e.value.code == WRONG_INSTALL
+    assert "Failed to invoke rar command, error 10" in caplog.text
+    assert "THE_ERROR" in caplog.text
+
diff --git a/tests/yaml_samples/empty_zip.kibot.yaml b/tests/yaml_samples/empty_zip.kibot.yaml
new file mode 100644
index 00000000..70efa72d
--- /dev/null
+++ b/tests/yaml_samples/empty_zip.kibot.yaml
@@ -0,0 +1,9 @@
+# Example KiBot config file for a basic 2-layer board
+kibot:
+  version: 1
+
+outputs:
+  - name: result
+    comment: Test rar compress
+    type: compress
+