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

czv/tests/resources/fruits.csv

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

czv/tests/test_count.rs

@@ -0,0 +1,56 @@
+use czv;
+use czv::Result;
+
+#[test]
+fn test_row_count() -> Result<()> {
+    let cases = vec![
+        ("tests/resources/fruits.csv", 3),
+        ("tests/resources/constituents_altnames.csv", 33971),
+    ];
+    for (file_name, expected) in cases {
+        let got = czv::count::row_count(Some(file_name.into()), None, false)?;
+        assert_eq!(expected, got);
+    }
+    Ok(())
+}
+
+#[test]
+fn test_row_count_builder() -> Result<()> {
+    let cases = vec![
+        ("tests/resources/fruits.csv", 3),
+        ("tests/resources/constituents_altnames.csv", 33971),
+    ];
+    for (file_name, expected) in cases {
+        let got = czv::count::RowCount::new().file_path(file_name).execute()?;
+        assert_eq!(expected, got);
+    }
+    Ok(())
+}
+
+#[test]
+fn test_column_count() -> Result<()> {
+    let cases = vec![
+        ("tests/resources/fruits.csv", 2),
+        ("tests/resources/constituents_altnames.csv", 6),
+    ];
+    for (file_name, expected) in cases {
+        let got = czv::count::column_count(Some(file_name.into()), None)?;
+        assert_eq!(expected, got);
+    }
+    Ok(())
+}
+
+#[test]
+fn test_column_count_builder() -> Result<()> {
+    let cases = vec![
+        ("tests/resources/fruits.csv", 2),
+        ("tests/resources/constituents_altnames.csv", 6),
+    ];
+    for (file_name, expected) in cases {
+        let got = czv::count::ColumnCount::new()
+            .file_path(file_name)
+            .execute()?;
+        assert_eq!(expected, got);
+    }
+    Ok(())
+}

czv/tests/test_slice.rs

@@ -0,0 +1,75 @@
+use czv;
+use czv::Result;
+
+#[test]
+fn test_slice_start_end() -> Result<()> {
+    let cases = vec![(
+        "tests/resources/fruits.csv",
+        1,
+        3,
+        "banana,3.00\nstrawberry,1.50".to_string(),
+    )];
+    for (file_name, start, end, expected) in cases {
+        let got = czv::slice::slice(
+            Some(file_name.into()),
+            None,
+            Some(start),
+            Some(end),
+            None,
+            None,
+            false,
+        )?;
+        assert_eq!(expected, got);
+    }
+    Ok(())
+}
+
+#[test]
+fn test_slice_start_end_data() -> Result<()> {
+    let cases = vec![(
+        "fruit,price\napple,2.50\nbanana,3.00\nstrawberry,1.50".to_string(),
+        1,
+        3,
+        "banana,3.00\nstrawberry,1.50".to_string(),
+    )];
+    for (file_data, start, end, expected) in cases {
+        let got = czv::slice::slice(
+            None,
+            Some(file_data),
+            Some(start),
+            Some(end),
+            None,
+            None,
+            false,
+        )?;
+        assert_eq!(expected, got);
+    }
+    Ok(())
+}
+
+#[test]
+fn test_slice_start_0_end_3() -> Result<()> {
+    let expected = "apple,2.50\nbanana,3.00".to_string();
+    let got: String = czv::slice::Slice::new()
+        .file_path("tests/resources/fruits.csv")
+        .start(0)
+        .end(2) // exclusive
+        .include_header_row(false)
+        .execute()?;
+
+    assert_eq!(expected, got);
+    Ok(())
+}
+
+#[test]
+fn test_slice_index_2() -> Result<()> {
+    let expected = "strawberry,1.50".to_string();
+    let got: String = czv::slice::Slice::new()
+        .file_path("tests/resources/fruits.csv")
+        .index(2)
+        .include_header_row(false)
+        .execute()?;
+
+    assert_eq!(expected, got);
+    Ok(())
+}