test: Moved tests to seprate files under tests folder for more structure

1 files changed, 130 insertions, 0 deletions

diff --git a/tests/test_parse_array.rs b/tests/test_parse_array.rs
new file mode 100644
index 0000000..48e8826
--- /dev/null
+++ b/tests/test_parse_array.rs
@@ -0,0 +1,130 @@
+use codecrafters_redis::resp_parser::*;
+
+#[test]
+fn test_valid_arrays() {
+    // Simple array with strings
+    let arr = vec![
+        RespType::BulkString("hello".into()),
+        RespType::BulkString("world".into()),
+    ];
+    assert_eq!(
+        parse_array(b"*2\r\n$5\r\nhello\r\n$5\r\nworld\r\n")
+            .unwrap()
+            .0,
+        RespType::Array(arr)
+    );
+
+    // Array with mixed types
+    let arr = vec![
+        RespType::Integer(42),
+        RespType::SimpleString("OK".to_string()),
+        RespType::Null(),
+    ];
+    assert_eq!(
+        parse_array(b"*3\r\n:42\r\n+OK\r\n_\r\n").unwrap().0,
+        RespType::Array(arr)
+    );
+
+    // Nested array
+    let arr = vec![
+        RespType::Array(vec![
+            RespType::BulkString("nested".into()),
+            RespType::Integer(123),
+        ]),
+        RespType::SimpleError("ERR test".to_string()),
+    ];
+    assert_eq!(
+        parse_array(b"*2\r\n*2\r\n$6\r\nnested\r\n:123\r\n-ERR test\r\n")
+            .unwrap()
+            .0,
+        RespType::Array(arr)
+    );
+
+    // Empty array
+    let arr = vec![];
+    assert_eq!(parse_array(b"*0\r\n").unwrap().0, RespType::Array(arr));
+}
+
+#[test]
+fn test_invalid_arrays() {
+    // Wrong data type marker
+    assert_eq!(
+        parse_array(b"+2\r\n$5\r\nhello\r\n")
+            .err()
+            .unwrap()
+            .message(),
+        "ERR Invalid data type"
+    );
+
+    // Missing \r\n terminator
+    assert_eq!(
+        parse_array(b"*2\r\n$5\r\nhello\r\n$5\r\nworld")
+            .err()
+            .unwrap()
+            .message(),
+        "ERR Unexpected end of input"
+    );
+
+    // Invalid length
+    assert_eq!(
+        parse_array(b"*-1\r\n").err().unwrap().message(),
+        "ERR invalid value"
+    );
+
+    // Non-numeric length
+    assert_eq!(
+        parse_array(b"*abc\r\n").err().unwrap().message(),
+        "ERR invalid value"
+    );
+
+    // Incomplete array elements
+    assert_eq!(
+        parse_array(b"*2\r\n$5\r\nhello\r\n")
+            .err()
+            .unwrap()
+            .message(),
+        "ERR Unexpected end of input"
+    );
+
+    // Empty input
+    assert_eq!(parse_array(b"").err().unwrap().message(), "ERR Empty data");
+
+    // Just the marker
+    assert_eq!(
+        parse_array(b"*").err().unwrap().message(),
+        "ERR Unexpected end of input"
+    );
+
+    // Invalid element type
+    assert_eq!(
+        parse_array(b"*1\r\n@invalid\r\n").err().unwrap().message(),
+        "ERR Invalid data type"
+    );
+}
+
+#[test]
+fn test_array_remaining_bytes() {
+    // Test with remaining data
+    let arr = vec![RespType::BulkString("test".into()), RespType::Integer(99)];
+    let (value, remaining) = parse_array(b"*2\r\n$4\r\ntest\r\n:99\r\n+OK\r\n").unwrap();
+    assert_eq!(value, RespType::Array(arr));
+    assert_eq!(remaining, b"+OK\r\n");
+
+    // Test with no remaining data
+    let arr = vec![RespType::SimpleString("PONG".to_string())];
+    let (value, remaining) = parse_array(b"*1\r\n+PONG\r\n").unwrap();
+    assert_eq!(value, RespType::Array(arr));
+    assert_eq!(remaining, b"");
+
+    // Test with multiple commands
+    let arr = vec![RespType::Null()];
+    let (value, remaining) = parse_array(b"*1\r\n_\r\n*0\r\n").unwrap();
+    assert_eq!(value, RespType::Array(arr));
+    assert_eq!(remaining, b"*0\r\n");
+
+    // Test with empty array and remaining data
+    let arr = vec![];
+    let (value, remaining) = parse_array(b"*0\r\n-ERR test\r\n").unwrap();
+    assert_eq!(value, RespType::Array(arr));
+    assert_eq!(remaining, b"-ERR test\r\n");
+}