vcf/io/writer/record/info/field/value/array: Add tests

noodles-vcf/src/io/writer/record/info/field/value/array.rs

@@ -71,3 +71,51 @@ where
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::variant::record_buf::info::field::value::Array as ArrayBuf;
+
+    #[test]
+    fn test_write_array() -> io::Result<()> {
+        fn t(buf: &mut Vec<u8>, array: &ArrayBuf, expected: &[u8]) -> io::Result<()> {
+            buf.clear();
+            write_array(buf, &array.into())?;
+            assert_eq!(buf, expected);
+            Ok(())
+        }
+
+        let mut buf = Vec::new();
+
+        let array = ArrayBuf::Integer(vec![Some(8)]);
+        t(&mut buf, &array, b"8")?;
+
+        let array = ArrayBuf::Integer(vec![Some(8), Some(13), None]);
+        t(&mut buf, &array, b"8,13,.")?;
+
+        let array = ArrayBuf::Float(vec![Some(0.333)]);
+        t(&mut buf, &array, b"0.333")?;
+
+        let array = ArrayBuf::Float(vec![Some(0.333), Some(0.667), None]);
+        t(&mut buf, &array, b"0.333,0.667,.")?;
+
+        let array = ArrayBuf::Character(vec![Some('n')]);
+        t(&mut buf, &array, b"n")?;
+
+        let array = ArrayBuf::Character(vec![Some('n'), Some(':'), None]);
+        t(&mut buf, &array, b"n,:,.")?; // FIXME
+
+        let array = ArrayBuf::String(vec![Some(String::from("noodles"))]);
+        t(&mut buf, &array, b"noodles")?;
+
+        let array = ArrayBuf::String(vec![
+            Some(String::from("noodles")),
+            Some(String::from(":")),
+            None,
+        ]);
+        t(&mut buf, &array, b"noodles,:,.")?; // FIXME
+
+        Ok(())
+    }
+}