From 4297d51c26186385755c7dab5331a97a0889e878 Mon Sep 17 00:00:00 2001
From: Ansis Brammanis <ansis@mapbox.com>
Date: Mon, 16 Apr 2018 15:43:27 -0400
Subject: [PATCH] add `handleWrapJump` tests (fixup)

---
 test/unit/source/source_cache.test.js       | 26 +++++++++++++++++++++
 test/unit/symbol/cross_tile_symbol_index.js | 21 +++++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/test/unit/source/source_cache.test.js b/test/unit/source/source_cache.test.js
index f35cdfa7c95..02c297dbcca 100644
--- a/test/unit/source/source_cache.test.js
+++ b/test/unit/source/source_cache.test.js
@@ -706,6 +706,32 @@ test('SourceCache#update', (t) => {
         sourceCache.onAdd();
     });
 
+    t.test('reassigns tiles for large jumps in longitude', (t) => {
+
+        const transform = new Transform();
+        transform.resize(511, 511);
+        transform.zoom = 0;
+
+        const sourceCache = createSourceCache({});
+        sourceCache.on('data', (e) => {
+            if (e.sourceDataType === 'metadata') {
+                transform.center = new LngLat(360, 0);
+                const tileID = new OverscaledTileID(0, 1, 0, 0, 0);
+                sourceCache.update(transform);
+                t.deepEqual(sourceCache.getIds(), [tileID.key]);
+                const tile = sourceCache.getTile(tileID);
+
+                transform.center = new LngLat(0, 0);
+                const wrappedTileID = new OverscaledTileID(0, 0, 0, 0, 0);
+                sourceCache.update(transform);
+                t.deepEqual(sourceCache.getIds(), [wrappedTileID.key]);
+                t.equal(sourceCache.getTile(wrappedTileID), tile);
+                t.end();
+            }
+        });
+        sourceCache.onAdd();
+    });
+
     t.end();
 });
 
diff --git a/test/unit/symbol/cross_tile_symbol_index.js b/test/unit/symbol/cross_tile_symbol_index.js
index 7876bdadab9..429e77dac10 100644
--- a/test/unit/symbol/cross_tile_symbol_index.js
+++ b/test/unit/symbol/cross_tile_symbol_index.js
@@ -192,6 +192,27 @@ test('CrossTileSymbolIndex.addLayer', (t) => {
         t.end();
     });
 
+    t.test('reuses indexes when longitude is wrapped', (t) => {
+        const index = new CrossTileSymbolIndex();
+        const longitude = 370;
+
+        const tileID = new OverscaledTileID(6, 1, 6, 8, 8);
+        const firstInstances = [
+            makeSymbolInstance(1000, 1000, ""), // A
+        ];
+        const tile = makeTile(tileID, firstInstances);
+
+        index.addLayer(styleLayer, [tile], longitude);
+        t.equal(firstInstances[0].crossTileID, 1); // A
+
+        tile.tileID = tileID.wrapped();
+
+        index.addLayer(styleLayer, [tile], longitude % 360);
+        t.equal(firstInstances[0].crossTileID, 1);
+        t.end();
+
+    });
+
     t.end();
 });