feat: add czv, czv-wasm, and czv-python (init release)

czv-python/tests/data/fruits.csv

@@ -0,0 +1,4 @@
+fruit,price
+apple,2.50
+banana,3.00
+strawberry,1.50

czv-python/tests/test_count.py

@@ -0,0 +1,24 @@
+import czv
+import pytest
+from .test_data import test_data
+
+class TestCountFunc:
+    @pytest.mark.parametrize(
+        "file_name,expected",
+        [("fruits.csv", 3), ("constituents_altnames.csv", 33971)],
+    )
+    def test_count(self, file_name, expected):
+        """Count the total number of non-header rows."""
+
+        result = czv.row_count(test_data[file_name].read_text())
+        assert result == expected
+
+    @pytest.mark.parametrize(
+        "file_name,expected",
+        [("fruits.csv", 4), ("constituents_altnames.csv", 33972)],
+    )
+    def test_include_header_row(self, file_name, expected):
+        """Count the total number of rows including the header row."""
+
+        result = czv.row_count(test_data[file_name].read_text(), include_header_row=True)
+        assert result == expected

czv-python/tests/test_data.py

@@ -0,0 +1,7 @@
+import pathlib
+
+data_path = pathlib.Path(__file__).parent.resolve().joinpath("data")
+test_data = {
+    file_name: data_path.joinpath(file_name)
+    for file_name in ["fruits.csv", "constituents_altnames.csv"]
+}