From 0474103f6b2687ac67c56935f06cba8d17c6bd0e Mon Sep 17 00:00:00 2001
From: Sam Matthews <matthews.sam@gmail.com>
Date: Fri, 11 Nov 2016 10:01:25 -0800
Subject: [PATCH] min and max zoom getters (#3592)

---
 js/ui/map.js           | 15 +++++++++++++++
 test/js/ui/map.test.js | 16 ++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/js/ui/map.js b/js/ui/map.js
index 62aa217aa07..5e8e779552a 100755
--- a/js/ui/map.js
+++ b/js/ui/map.js
@@ -422,6 +422,13 @@ class Map extends Camera {
         } else throw new Error(`minZoom must be between ${defaultMinZoom} and the current maxZoom, inclusive`);
     }
 
+    /**
+     * Returns the map's minimum allowable zoom level.
+     *
+     * @returns {number} minZoom
+     */
+    getMinZoom() { return this.transform.minZoom; }
+
     /**
      * Sets or clears the map's maximum zoom level.
      * If the map's current zoom level is higher than the new maximum,
@@ -445,6 +452,14 @@ class Map extends Camera {
 
         } else throw new Error(`maxZoom must be between the current minZoom and ${defaultMaxZoom}, inclusive`);
     }
+
+    /**
+     * Returns the map's maximum allowable zoom level.
+     *
+     * @returns {number} maxZoom
+     */
+    getMaxZoom() { return this.transform.maxZoom; }
+
     /**
      * Returns a [`Point`](#Point) representing pixel coordinates, relative to the map's `container`,
      * that correspond to the specified geographical location.
diff --git a/test/js/ui/map.test.js b/test/js/ui/map.test.js
index 142f0364980..938ac550666 100755
--- a/test/js/ui/map.test.js
+++ b/test/js/ui/map.test.js
@@ -459,6 +459,14 @@ test('Map', (t) => {
         t.end();
     });
 
+    t.test('#getMinZoom', (t) => {
+        const map = createMap({zoom: 0});
+        t.equal(map.getMinZoom(), 0, 'returns default value');
+        map.setMinZoom(10);
+        t.equal(map.getMinZoom(), 10, 'returns custom value');
+        t.end();
+    });
+
     t.test('ignore minZooms over maxZoom', (t) => {
         const map = createMap({zoom:2, maxZoom:5});
         t.throws(() => {
@@ -485,6 +493,14 @@ test('Map', (t) => {
         t.end();
     });
 
+    t.test('#getMaxZoom', (t) => {
+        const map = createMap({zoom: 0});
+        t.equal(map.getMaxZoom(), 20, 'returns default value');
+        map.setMaxZoom(10);
+        t.equal(map.getMaxZoom(), 10, 'returns custom value');
+        t.end();
+    });
+
     t.test('ignore maxZooms over minZoom', (t) => {
         const map = createMap({minZoom:5});
         t.throws(() => {