diff --git a/tests/test_pysnooper.py b/tests/test_pysnooper.py
index 78dbc80..3a80d52 100644
--- a/tests/test_pysnooper.py
+++ b/tests/test_pysnooper.py
@@ -8,6 +8,8 @@ import time
 import types
 import os
 import sys
+import zipfile
+import importlib
 
 from pysnooper.utils import truncate
 import pytest
@@ -1914,3 +1916,147 @@ def test_exception_on_entry():
 
     with pytest.raises(TypeError):
         f()
+
+
+def test_valid_zipfile():
+    with mini_toolbox.create_temp_folder(prefix='pysnooper') as folder, \
+                                    mini_toolbox.TempSysPathAdder(str(folder)):
+        module_name = 'my_valid_zip_module'
+        zip_name = 'valid.zip'
+        zip_base_path = 'ansible/modules'
+        python_file_path = folder / ('%s/%s/%s.py' % (zip_name, zip_base_path, module_name))
+        os.makedirs(folder / ('%s/%s' % (zip_name, zip_base_path)))
+        sys.path.insert(0, str(folder / (zip_name)))
+        content = textwrap.dedent(u'''
+            import pysnooper
+            @pysnooper.snoop(color=False)
+            def f(x):
+                return x
+        ''')
+        with python_file_path.open('w') as python_file:
+            python_file.write(content)
+
+        module = importlib.import_module('%s.%s' % ('.'.join(zip_base_path.split('/')), module_name))
+
+        with zipfile.ZipFile(folder / 'foo_bar.zip', 'w') as myZipFile:
+            myZipFile.write(folder.joinpath('%s/%s/%s.py' % (zip_name, zip_base_path, module_name)), '%s/%s.py' % (zip_base_path, module_name,), zipfile.ZIP_DEFLATED)
+
+        python_file_path.unlink()
+        os.rename(folder.joinpath(zip_name), folder.joinpath('%s.delete' % (zip_name)),)
+        os.rename(folder / 'foo_bar.zip', folder.joinpath(zip_name),)
+
+        with mini_toolbox.OutputCapturer(stdout=False,
+                                         stderr=True) as output_capturer:
+            result = getattr(module, 'f')(7)
+        assert result == 7
+        output = output_capturer.output
+
+        assert_output(
+            output,
+            (
+                SourcePathEntry(),
+                VariableEntry(stage='starting'),
+                CallEntry('def f(x):'),
+                LineEntry('return x'),
+                ReturnEntry('return x'),
+                ReturnValueEntry('7'),
+                ElapsedTimeEntry(),
+            )
+        )
+
+
+def test_invalid_zipfile():
+    with mini_toolbox.create_temp_folder(prefix='pysnooper') as folder, \
+                                    mini_toolbox.TempSysPathAdder(str(folder)):
+        module_name = 'my_invalid_zip_module'
+        zip_name = 'invalid.zip'
+        zip_base_path = 'invalid/modules/path'
+        python_file_path = folder / ('%s/%s/%s.py' % (zip_name, zip_base_path, module_name))
+        os.makedirs(folder / ('%s/%s' % (zip_name, zip_base_path)))
+        sys.path.insert(0, str(folder / (zip_name)))
+        content = textwrap.dedent(u'''
+            import pysnooper
+            @pysnooper.snoop(color=False)
+            def f(x):
+                return x
+        ''')
+        with python_file_path.open('w') as python_file:
+            python_file.write(content)
+
+        module = importlib.import_module('%s.%s' % ('.'.join(zip_base_path.split('/')), module_name))
+
+        with zipfile.ZipFile(folder / 'foo_bar.zip', 'w') as myZipFile:
+            myZipFile.write(folder.joinpath('%s/%s/%s.py' % (zip_name, zip_base_path, module_name)), '%s/%s.py' % (zip_base_path, module_name,), zipfile.ZIP_DEFLATED)
+
+        python_file_path.unlink()
+        os.rename(folder.joinpath(zip_name), folder.joinpath('%s.delete' % (zip_name)),)
+        os.rename(folder / 'foo_bar.zip', folder.joinpath(zip_name),)
+
+        with mini_toolbox.OutputCapturer(stdout=False,
+                                         stderr=True) as output_capturer:
+            result = getattr(module, 'f')(7)
+        assert result == 7
+        output = output_capturer.output
+
+        assert_output(
+            output,
+            (
+                SourcePathEntry(),
+                VariableEntry(stage='starting'),
+                CallEntry('SOURCE IS UNAVAILABLE'),
+                LineEntry('SOURCE IS UNAVAILABLE'),
+                ReturnEntry('SOURCE IS UNAVAILABLE'),
+                ReturnValueEntry('7'),
+                ElapsedTimeEntry(),
+            )
+        )
+
+
+def test_valid_damaged_zipfile():
+    with mini_toolbox.create_temp_folder(prefix='pysnooper') as folder, \
+                                    mini_toolbox.TempSysPathAdder(str(folder)):
+        module_name = 'my_damaged_module'
+        zip_name = 'damaged.zip'
+        zip_base_path = 'ansible/modules'
+        python_file_path = folder / ('%s/%s/%s.py' % (zip_name, zip_base_path, module_name))
+        os.makedirs(folder / ('%s/%s' % (zip_name, zip_base_path)))
+        sys.path.insert(0, str(folder / (zip_name)))
+        content = textwrap.dedent(u'''
+            import pysnooper
+            @pysnooper.snoop(color=False)
+            def f(x):
+                return x
+        ''')
+        with python_file_path.open('w') as python_file:
+            python_file.write(content)
+
+        module = importlib.import_module('%s.%s' % ('.'.join(zip_base_path.split('/')), module_name))
+
+        python_file_path.unlink()
+        os.rename(folder.joinpath(zip_name), folder.joinpath('%s.delete' % (zip_name)),)
+
+        content_damaged_zip = textwrap.dedent(u'''
+            I am not a zip file
+        ''')
+
+        with folder.joinpath(zip_name).open('w') as damaged_zip_file:
+            damaged_zip_file.write(content_damaged_zip)
+
+        with mini_toolbox.OutputCapturer(stdout=False,
+                                         stderr=True) as output_capturer:
+            result = getattr(module, 'f')(7)
+        assert result == 7
+        output = output_capturer.output
+
+        assert_output(
+            output,
+            (
+                SourcePathEntry(),
+                VariableEntry(stage='starting'),
+                CallEntry('SOURCE IS UNAVAILABLE'),
+                LineEntry('SOURCE IS UNAVAILABLE'),
+                ReturnEntry('SOURCE IS UNAVAILABLE'),
+                ReturnValueEntry('7'),
+                ElapsedTimeEntry(),
+            )
+        )