diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..2b0d6bd
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,24 @@
+#!/usr/bin/python3
+
+import pytest
+
+
+def pytest_addoption(parser):
+    parser.addoption(
+        "--manual", action="store_true", help="Run tests that need a human for verification.")
+
+
+def pytest_collection_modifyitems(config, items):
+    if config.getoption('--manual'):
+        skip_normal = pytest.mark.skip(reason=f"Only manual tests get run when --manual is set.")
+
+        for item in items:
+            if not "manual" in item.keywords:
+                item.add_marker(skip_normal)
+
+    else:
+        skip_manual = pytest.mark.skip(reason=f"Only normal tests get run when --manual is not set.")
+
+        for item in items:
+            if "manual" in item.keywords:
+                item.add_marker(skip_manual)
\ No newline at end of file
diff --git a/tests/text/test_format.py b/tests/text/test_format.py
index 769339b..dffa08c 100644
--- a/tests/text/test_format.py
+++ b/tests/text/test_format.py
@@ -1,15 +1,25 @@
 #!/usr/bin/python3
 
+import sys
+import pytest
+
 from wobbl_tools.text.format import format_string
 from wobbl_tools.text import format
+sys.path.append("..")
+from utils import is_right  # noqa
 
-print("\n==== wobbl_tools.text.format =====")
 
-formats = list(format.color_ansi.keys())
-formats.remove("rs")
-formats.remove("reset")
+@pytest.mark.manual
+def test_formatting():
+    print("\n==== wobbl_tools.text.format =====")
 
-print("Is this shit looking right?\n")
+    formats = list(format.color_ansi.keys())
+    formats.remove("rs")
+    formats.remove("reset")
 
-for format_name in formats:
-    print(f"{format_name.title().replace("_", " ")} text: {format_string(f"§{format_name}Text")}")
+    print("Is this shit looking right?\n")
+
+    for format_name in formats:
+        print(f"{format_name.title().replace('_', ' ')} text: {format_string(f'§{format_name}Text')}")
+
+    assert is_right()
diff --git a/tests/text/test_log.py b/tests/text/test_log.py
index 7d37852..1ad86e9 100644
--- a/tests/text/test_log.py
+++ b/tests/text/test_log.py
@@ -1,22 +1,33 @@
 #!/usr/bin/python3
 
+import sys
 import pytest
-from wobbl_tools.text.log import Log
 
-print("\n==== wobbl_tools.text.log =====")
+from wobbl_tools.text import Log
+sys.path.append("..")
+from utils import is_right  # noqa
 
-test_log = Log("test_log.txt")
-test_log.clear()
 
-test_log.write("Testing the log module...")
-test_log.write("This should be fine...", "ok")
-test_log.write("Something happened...", "warning")
-test_log.write("Oh shit!", "error")
+@pytest.mark.manual
+def test_writing():
+    print("\n==== wobbl_tools.text.log =====")
 
-print("Logfile contents:")
-print(test_log.read())
+    log = Log("test_log.txt")
+    log.clear()
 
-without_file = Log()
+    log.write("Testing the log module...")
+    log.write("This should be fine...", "ok")
+    log.write("Something happened...", "warning")
+    log.write("Oh shit!", "error")
 
-with pytest.raises(FileNotFoundError, match="You didn't specify a log path at the log instance definition."):
-    without_file.read()
+    print("Logfile contents:")
+    print(log.read())
+
+    assert is_right()
+
+
+def test_exception_without_file_on_read():
+    log = Log()
+
+    with pytest.raises(FileNotFoundError, match="You didn't specify a log path at the log instance definition."):
+        log.read()
diff --git a/tests/utils.py b/tests/utils.py
new file mode 100644
index 0000000..9c7cc91
--- /dev/null
+++ b/tests/utils.py
@@ -0,0 +1,13 @@
+#!/usr/bin/python3
+
+
+def is_right() -> bool:
+    """
+    Ask the developer if the output of the test is right.
+    """
+
+    yn = input("\nIs this right? (y/n): ")
+
+    print("\n")
+
+    return yn.lower() == "y"