diff --git a/codecov/tests/test_sentiment.py b/codecov/tests/test_sentiment.py
new file mode 100644
index 0000000000..e56e4ae37c
--- /dev/null
+++ b/codecov/tests/test_sentiment.py
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+from unittest.mock import patch
+
+import pytest
+
+from codecov.sentiment import SentimentAnalyzer
+
+
+@pytest.fixture
+def sentiment_analyzer():
+    return SentimentAnalyzer()
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_get_sentiment_positive(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.polarity = 0.5
+    assert sentiment_analyzer.get_sentiment("Great job!") == "positive"
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_get_sentiment_negative(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.polarity = -0.5
+    assert sentiment_analyzer.get_sentiment("Terrible experience.") == "negative"
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_get_sentiment_neutral(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.polarity = 0.0
+    assert sentiment_analyzer.get_sentiment("This is a neutral statement.") == "neutral"
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_get_polarity_score(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.polarity = 0.75
+    assert sentiment_analyzer.get_polarity_score("Excellent work!") == 0.75
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_get_subjectivity_score(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.subjectivity = 0.6
+    assert sentiment_analyzer.get_subjectivity_score("I think this is amazing!") == 0.6
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_is_neutral_true(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.polarity = 0.0
+    assert sentiment_analyzer.is_neutral("This is a fact.") == True
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_is_neutral_false(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.polarity = 0.5
+    assert sentiment_analyzer.is_neutral("This is great!") == False
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_is_positive_true(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.polarity = 0.5
+    assert sentiment_analyzer.is_positive("This is wonderful!") == True
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_is_positive_false(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.polarity = -0.5
+    assert sentiment_analyzer.is_positive("This is awful.") == False
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_private_get_polarity(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.polarity = 0.8
+    assert sentiment_analyzer._get_polarity("Amazing!") == 0.8
+
+
+@patch("codecov.sentiment.TextBlob")
+def test_private_get_subjectivity(mock_textblob, sentiment_analyzer):
+    mock_textblob.return_value.sentiment.subjectivity = 0.9
+    assert sentiment_analyzer._get_subjectivity("I absolutely love this!") == 0.9