diff --git a/.travis.yml b/.travis.yml
index 1bda860..bbe353f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,22 @@ language: python
 python:
   - "2.7"
   - "3.6"
+
+notifications:
+  email: false
+
+install:
+  - pip install tox-travis
+  - pip install coveralls
+
+script:
+  - tox
+
+after_success:
+  - coveralls
+
 install:
   - pip install -e .
   - pip install -r requirements.txt
-script: py.test
\ No newline at end of file
+script: py.test
+
diff --git a/README.md b/README.md
index d1b1e23..32b88db 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,18 @@
 
+# data-structures
+
+### Bubble Sort
+
+```
+Bubble sort takes in a list of numbers and uses a bubble sort method to return a sorted list.
+
+To use bubble_sort, from bubble_sort import bubble_sort.
+Pass in a list of numbers bubble_sort(list).
+
+* _bubble_sort(list) (O(n^2))_
+
+
+
 # Data-Structures
 
 Where a variety of data-structures found in python are being explored, such as:
diff --git a/src/bubble_sort.py b/src/bubble_sort.py
new file mode 100644
index 0000000..b4e09d2
--- /dev/null
+++ b/src/bubble_sort.py
@@ -0,0 +1,53 @@
+"""Function to run a bubble sort on a given list of numbers."""
+import time
+from random import randint
+
+
+def bubble_sort(list):
+    """Bubble sort function."""
+    global looped
+    looped = 1
+    for i in range(len(list) - looped):
+        if list[i] > list[i + 1]:
+            list[i], list[i + 1] = list[i + 1], list[i]
+        else:
+            continue  # pragma: no cover
+        looped += 1
+        bubble_sort(list)
+    return list
+
+if __name__ == '__main__':
+
+    short_list = [randint(1, 50) for _ in range(10)]
+    print('\nCASE 1: A small list to be sorted:\n', short_list)
+    short_list = timeit.timeit("bubble_sort(short_list)", setup="from __main__ import short_list, bubble_sort")
+    print('Short list time: ', short_list)
+
+    print('\nCASE 2: A list of 100 numbers:\n')
+    hundred = [randint(1, 100000) for x in range(100)]
+    start_hundred = time.time()
+    solve_hundred = (time.time() - start_hundred) * 1000
+    print(bubble_sort(hundred))
+    print('\nSorted using bubble_sort() in {} seconds.'.format(solve_hundred))
+
+    print('\nCASE 3: A list of 1,000 random numbers:')
+    thousand = [randint(1, 100000) for x in range(1000)]
+    start_thousand = time.time()
+    solve_thousand = (time.time() - start_thousand) * 1000
+    print(thousand)
+    print(bubble_sort(thousand))
+    print('\nSorted using bubble_sort() {} seconds'.format(solve_thousand))
+
+    print('\nCASE 4: A list of 10,000 numbers (not shown):\n')
+    ten = [randint(1, 100000) for x in range(10000)]
+    start_ten = time.time()
+    solve_ten = (time.time() - start_ten) * 1000
+    print(bubble_sort(ten))
+    print('\nSorted using bubble_sort() in {} seconds.'.format(solve_ten))
+
+    print('\nCASE 5: A list of 100,000 words:\n')
+    mil = [randint(1, 100000) for x in range(100000)]
+    start_mil = time.time()
+    solve_mil = (time.time() - start_mil) * 1000
+    print(bubble_sort(mil))
+    print('\nSorted using bubble_sort() in {} seconds.'.format(solve_mil))
diff --git a/src/test_bubble_sort.py b/src/test_bubble_sort.py
new file mode 100644
index 0000000..3262d7c
--- /dev/null
+++ b/src/test_bubble_sort.py
@@ -0,0 +1,39 @@
+"""Test bubble sort."""
+
+from bubble_sort import bubble_sort
+
+
+def test_bubble_sort_on_empty_list_returns_empty():
+    """Test bubble sort on empty list retruns empty list."""
+    test = []
+    assert bubble_sort(test) == []
+
+
+def test_bubble_sort_on_list_of_three():
+    """Test bubble sort on list of three retuned sorted."""
+    test = [6, 8, 2]
+    assert bubble_sort(test) == [2, 6, 8]
+
+
+def test_bubble_sort_with_sorted_list_no_change():
+    """Test bubble sort with sorted list returns no change."""
+    test = [1, 2, 3, 4, 5, 6, 7, 8, 9]
+    assert bubble_sort(test) == [1, 2, 3, 4, 5, 6, 7, 8, 9]
+
+
+def test_bubble_sort_on_reverse_sort_returns_sorted():
+    """Test bubble sort with reverse sort returns sorted."""
+    test = [9, 8, 7, 6, 5, 4, 3, 2, 1]
+    assert bubble_sort(test) == [1, 2, 3, 4, 5, 6, 7, 8, 9]
+
+
+def test_bubble_sort_of_all_nums_same_returns_same():
+    """Test bubble sort if all nums same returns the same."""
+    test = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+    assert bubble_sort(test) == test
+
+
+def test_bubble_sort_with_one_variant_returns_sorted():
+    """Test bubble sort with one variant returns sorted."""
+    test = [0, 0, 0, 0, 0, 0, 1, 0, 0, 0]
+    assert bubble_sort(test) == [0, 0, 0, 0, 0, 0, 0, 0, 0, 1]
\ No newline at end of file