From 7c0b4374c1c6f049a6fe68d07bed87e7c22431d4 Mon Sep 17 00:00:00 2001
From: Akshay <nerdy@peppe.rs>
Date: Wed, 3 Mar 2021 19:11:26 +0530
Subject: add basic tests

---
 tests/serde.rs | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 tests/serde.rs

diff --git a/tests/serde.rs b/tests/serde.rs
new file mode 100644
index 0000000..295b8d0
--- /dev/null
+++ b/tests/serde.rs
@@ -0,0 +1,44 @@
+use std::io::Cursor;
+use std::mem::size_of;
+
+use obi::{CompressionType, Image, ImageInfoHeader};
+
+#[test]
+fn size_of_image_info_header() {
+    let file_header_size = size_of::<ImageInfoHeader>();
+    assert_eq!(16, file_header_size);
+}
+
+#[test]
+fn compression() {
+    let img = Image::new(50, 5);
+    let encoded = img.encode().unwrap();
+    let mut cursor = Cursor::new(encoded);
+    let decoded = Image::decode(&mut cursor).unwrap();
+    assert_eq!(
+        CompressionType::from_u32(decoded.image_info_header.compression_type),
+        CompressionType::None
+    );
+}
+
+#[test]
+fn size_no_rounding() {
+    let img = Image::new(100, 80);
+    let encoded = img.encode().unwrap();
+    assert_eq!(encoded.len(), 26 + 100 * 80 / 8);
+    let mut cursor = Cursor::new(encoded);
+    let decoded = Image::decode(&mut cursor).unwrap();
+    assert_eq!(decoded.image_info_header.width, 100);
+    assert_eq!(decoded.image_info_header.height, 80);
+}
+
+#[test]
+fn size_round_nearest() {
+    let img = Image::new(50, 5);
+    let encoded = img.encode().unwrap();
+    assert_eq!(encoded.len(), 26 + 256 / 8);
+    let mut cursor = Cursor::new(encoded);
+    let decoded = Image::decode(&mut cursor).unwrap();
+    assert_eq!(decoded.image_info_header.width, 50);
+    assert_eq!(decoded.image_info_header.height, 5);
+}
-- 
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