1 files changed, 129 insertions, 0 deletions
diff --git a/tests/test_casing.py b/tests/test_casing.py
new file mode 100644
index 0000000..b16d326
--- /dev/null
+++ b/tests/test_casing.py
@@ -0,0 +1,129 @@
+import pytest
+
+from aristaproto.casing import (
+    camel_case,
+    pascal_case,
+    snake_case,
+)
+
+
+@pytest.mark.parametrize(
+    ["value", "expected"],
+    [
+        ("", ""),
+        ("a", "A"),
+        ("foobar", "Foobar"),
+        ("fooBar", "FooBar"),
+        ("FooBar", "FooBar"),
+        ("foo.bar", "FooBar"),
+        ("foo_bar", "FooBar"),
+        ("FOOBAR", "Foobar"),
+        ("FOOBar", "FooBar"),
+        ("UInt32", "UInt32"),
+        ("FOO_BAR", "FooBar"),
+        ("FOOBAR1", "Foobar1"),
+        ("FOOBAR_1", "Foobar1"),
+        ("FOO1BAR2", "Foo1Bar2"),
+        ("foo__bar", "FooBar"),
+        ("_foobar", "Foobar"),
+        ("foobaR", "FoobaR"),
+        ("foo~bar", "FooBar"),
+        ("foo:bar", "FooBar"),
+        ("1foobar", "1Foobar"),
+    ],
+)
+def test_pascal_case(value, expected):
+    actual = pascal_case(value, strict=True)
+    assert actual == expected, f"{value} => {expected} (actual: {actual})"
+
+
+@pytest.mark.parametrize(
+    ["value", "expected"],
+    [
+        ("", ""),
+        ("a", "a"),
+        ("foobar", "foobar"),
+        ("fooBar", "fooBar"),
+        ("FooBar", "fooBar"),
+        ("foo.bar", "fooBar"),
+        ("foo_bar", "fooBar"),
+        ("FOOBAR", "foobar"),
+        ("FOO_BAR", "fooBar"),
+        ("FOOBAR1", "foobar1"),
+        ("FOOBAR_1", "foobar1"),
+        ("FOO1BAR2", "foo1Bar2"),
+        ("foo__bar", "fooBar"),
+        ("_foobar", "foobar"),
+        ("foobaR", "foobaR"),
+        ("foo~bar", "fooBar"),
+        ("foo:bar", "fooBar"),
+        ("1foobar", "1Foobar"),
+    ],
+)
+def test_camel_case_strict(value, expected):
+    actual = camel_case(value, strict=True)
+    assert actual == expected, f"{value} => {expected} (actual: {actual})"
+
+
+@pytest.mark.parametrize(
+    ["value", "expected"],
+    [
+        ("foo_bar", "fooBar"),
+        ("FooBar", "fooBar"),
+        ("foo__bar", "foo_Bar"),
+        ("foo__Bar", "foo__Bar"),
+    ],
+)
+def test_camel_case_not_strict(value, expected):
+    actual = camel_case(value, strict=False)
+    assert actual == expected, f"{value} => {expected} (actual: {actual})"
+
+
+@pytest.mark.parametrize(
+    ["value", "expected"],
+    [
+        ("", ""),
+        ("a", "a"),
+        ("foobar", "foobar"),
+        ("fooBar", "foo_bar"),
+        ("FooBar", "foo_bar"),
+        ("foo.bar", "foo_bar"),
+        ("foo_bar", "foo_bar"),
+        ("foo_Bar", "foo_bar"),
+        ("FOOBAR", "foobar"),
+        ("FOOBar", "foo_bar"),
+        ("UInt32", "u_int32"),
+        ("FOO_BAR", "foo_bar"),
+        ("FOOBAR1", "foobar1"),
+        ("FOOBAR_1", "foobar_1"),
+        ("FOOBAR_123", "foobar_123"),
+        ("FOO1BAR2", "foo1_bar2"),
+        ("foo__bar", "foo_bar"),
+        ("_foobar", "foobar"),
+        ("foobaR", "fooba_r"),
+        ("foo~bar", "foo_bar"),
+        ("foo:bar", "foo_bar"),
+        ("1foobar", "1_foobar"),
+        ("GetUInt64", "get_u_int64"),
+    ],
+)
+def test_snake_case_strict(value, expected):
+    actual = snake_case(value)
+    assert actual == expected, f"{value} => {expected} (actual: {actual})"
+
+
+@pytest.mark.parametrize(
+    ["value", "expected"],
+    [
+        ("fooBar", "foo_bar"),
+        ("FooBar", "foo_bar"),
+        ("foo_Bar", "foo__bar"),
+        ("foo__bar", "foo__bar"),
+        ("FOOBar", "foo_bar"),
+        ("__foo", "__foo"),
+        ("GetUInt64", "get_u_int64"),
+    ],
+)
+def test_snake_case_not_strict(value, expected):
+    actual = snake_case(value, strict=False)
+    assert actual == expected, f"{value} => {expected} (actual: {actual})"