From d80e3bfa2f372e2b210f46b8c46796a9754abf27 Mon Sep 17 00:00:00 2001
From: Pierre Ossman <ossman@cendio.se>
Date: Thu, 16 May 2024 16:53:49 +0200
Subject: [PATCH] Add unit tests for Tight gradient filter

---
 tests/test.tight.js | 74 ++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 70 insertions(+), 4 deletions(-)

diff --git a/tests/test.tight.js b/tests/test.tight.js
index b3457a88b..141d7b6e2 100644
--- a/tests/test.tight.js
+++ b/tests/test.tight.js
@@ -228,12 +228,59 @@ describe('Tight Decoder', function () {
         expect(display).to.have.displayed(targetData);
     });
 
-    it.skip('should handle uncompressed gradient rects', function () {
-        // Not implemented yet
+    it('should handle uncompressed gradient rects', function () {
+        let done;
+        let blueData = [ 0x40, 0x02, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00 ];
+        let greenData = [ 0x40, 0x02, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00 ];
+
+        done = testDecodeRect(decoder, 0, 0, 2, 1, blueData, display, 24);
+        expect(done).to.be.true;
+        done = testDecodeRect(decoder, 0, 1, 2, 1, blueData, display, 24);
+        expect(done).to.be.true;
+        done = testDecodeRect(decoder, 2, 0, 2, 1, greenData, display, 24);
+        expect(done).to.be.true;
+        done = testDecodeRect(decoder, 2, 1, 2, 1, greenData, display, 24);
+        expect(done).to.be.true;
+        done = testDecodeRect(decoder, 0, 2, 2, 1, greenData, display, 24);
+        expect(done).to.be.true;
+        done = testDecodeRect(decoder, 0, 3, 2, 1, greenData, display, 24);
+        expect(done).to.be.true;
+        done = testDecodeRect(decoder, 2, 2, 2, 1, blueData, display, 24);
+        expect(done).to.be.true;
+        done = testDecodeRect(decoder, 2, 3, 2, 1, blueData, display, 24);
+        expect(done).to.be.true;
+
+        let targetData = new Uint8Array([
+            0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
+            0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
+            0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
+            0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
+        ]);
+
+        expect(display).to.have.displayed(targetData);
     });
 
-    it.skip('should handle compressed gradient rects', function () {
-        // Not implemented yet
+    it('should handle compressed gradient rects', function () {
+        let data = [
+            // Control byte
+            0x40, 0x02,
+            // Pixels (compressed)
+            0x18,
+            0x78, 0x9c, 0x62, 0x60, 0xf8, 0xcf, 0x00, 0x04,
+            0xff, 0x19, 0x19, 0xd0, 0x00, 0x44, 0x84, 0xf1,
+            0x3f, 0x9a, 0x30, 0x00, 0x00, 0x00, 0xff, 0xff ];
+
+        let done = testDecodeRect(decoder, 0, 0, 4, 4, data, display, 24);
+
+        let targetData = new Uint8Array([
+            0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
+            0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
+            0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
+            0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
+        ]);
+
+        expect(done).to.be.true;
+        expect(display).to.have.displayed(targetData);
     });
 
     it('should handle empty copy rects', function () {
@@ -275,6 +322,25 @@ describe('Tight Decoder', function () {
         expect(display).to.have.displayed(targetData);
     });
 
+    it('should handle empty gradient rects', function () {
+        display.fillRect(0, 0, 4, 4, [ 0x00, 0x00, 0xff ]);
+        display.fillRect(2, 0, 2, 2, [ 0x00, 0xff, 0x00 ]);
+        display.fillRect(0, 2, 2, 2, [ 0x00, 0xff, 0x00 ]);
+
+        let done = testDecodeRect(decoder, 1, 2, 0, 0,
+                                  [ 0x40, 0x02 ], display, 24);
+
+        let targetData = new Uint8Array([
+            0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
+            0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255, 0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255,
+            0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255,
+            0x00, 0xff, 0x00, 255, 0x00, 0xff, 0x00, 255, 0x00, 0x00, 0xff, 255, 0x00, 0x00, 0xff, 255
+        ]);
+
+        expect(done).to.be.true;
+        expect(display).to.have.displayed(targetData);
+    });
+
     it('should handle empty fill rects', function () {
         display.fillRect(0, 0, 4, 4, [ 0x00, 0x00, 0xff ]);
         display.fillRect(2, 0, 2, 2, [ 0x00, 0xff, 0x00 ]);