From 92f0711404965a4233ee2c7df492bdcab2076af2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89ric=20Lemoine?= <eric.lemoine@gmail.com>
Date: Tue, 25 Sep 2012 00:02:22 +0200
Subject: [PATCH] Jasmine tests for ol.interaction.ResolutionConstraint

---
 test/ol.html                                  |   1 +
 .../interaction/resolutionconstraint.test.js  | 187 ++++++++++++++++++
 2 files changed, 188 insertions(+)
 create mode 100644 test/spec/ol/interaction/resolutionconstraint.test.js

diff --git a/test/ol.html b/test/ol.html
index e93f333def..7381ba1002 100644
--- a/test/ol.html
+++ b/test/ol.html
@@ -79,6 +79,7 @@
   <script type="text/javascript" src="spec/ol/tilecoord.test.js"></script>
   <script type="text/javascript" src="spec/ol/projection.test.js"></script>
   <script type="text/javascript" src="spec/ol/tileurlfunction.test.js"></script>
+  <script type="text/javascript" src="spec/ol/interaction/resolutionconstraint.test.js"></script>
 
   <script type="text/javascript">
     (function() {
diff --git a/test/spec/ol/interaction/resolutionconstraint.test.js b/test/spec/ol/interaction/resolutionconstraint.test.js
new file mode 100644
index 0000000000..1fcfef09d7
--- /dev/null
+++ b/test/spec/ol/interaction/resolutionconstraint.test.js
@@ -0,0 +1,187 @@
+goog.require('ol.interaction.ResolutionConstraint');
+
+describe('ol.interaction.ResolutionConstraint', function() {
+
+  describe('SnapToResolution', function() {
+
+    var resolutionConstraint;
+
+    beforeEach(function() {
+      resolutionConstraint =
+            ol.interaction.ResolutionConstraint.createSnapToResolutions(
+                [1000, 500, 250, 100]);
+    });
+
+    describe('delta 0', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1000, 0)).toEqual(1000);
+        expect(resolutionConstraint(500, 0)).toEqual(500);
+        expect(resolutionConstraint(250, 0)).toEqual(250);
+        expect(resolutionConstraint(100, 0)).toEqual(100);
+      });
+    });
+
+    describe('zoom in', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1000, 1)).toEqual(500);
+        expect(resolutionConstraint(500, 1)).toEqual(250);
+        expect(resolutionConstraint(250, 1)).toEqual(100);
+        expect(resolutionConstraint(100, 1)).toEqual(100);
+      });
+    });
+
+    describe('zoom out', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1000, -1)).toEqual(1000);
+        expect(resolutionConstraint(500, -1)).toEqual(1000);
+        expect(resolutionConstraint(250, -1)).toEqual(500);
+        expect(resolutionConstraint(100, -1)).toEqual(250);
+      });
+    });
+  });
+
+  describe('SnapToResolutions Nearest', function() {
+
+    var resolutionConstraint;
+
+    beforeEach(function() {
+      resolutionConstraint =
+          ol.interaction.ResolutionConstraint.createSnapToResolutions(
+              [1000, 500, 250, 100]);
+    });
+
+    describe('delta 0', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1050, 0)).toEqual(1000);
+        expect(resolutionConstraint(950, 0)).toEqual(1000);
+        expect(resolutionConstraint(550, 0)).toEqual(500);
+        expect(resolutionConstraint(400, 0)).toEqual(500);
+        expect(resolutionConstraint(300, 0)).toEqual(250);
+        expect(resolutionConstraint(200, 0)).toEqual(250);
+        expect(resolutionConstraint(150, 0)).toEqual(100);
+        expect(resolutionConstraint(50, 0)).toEqual(100);
+      });
+    });
+
+    describe('zoom in', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1050, 1)).toEqual(500);
+        expect(resolutionConstraint(950, 1)).toEqual(500);
+        expect(resolutionConstraint(550, 1)).toEqual(250);
+        expect(resolutionConstraint(450, 1)).toEqual(250);
+        expect(resolutionConstraint(300, 1)).toEqual(100);
+        expect(resolutionConstraint(200, 1)).toEqual(100);
+        expect(resolutionConstraint(150, 1)).toEqual(100);
+        expect(resolutionConstraint(50, 1)).toEqual(100);
+      });
+    });
+
+    describe('zoom out', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1050, -1)).toEqual(1000);
+        expect(resolutionConstraint(950, -1)).toEqual(1000);
+        expect(resolutionConstraint(550, -1)).toEqual(1000);
+        expect(resolutionConstraint(450, -1)).toEqual(1000);
+        expect(resolutionConstraint(300, -1)).toEqual(500);
+        expect(resolutionConstraint(200, -1)).toEqual(500);
+        expect(resolutionConstraint(150, -1)).toEqual(250);
+        expect(resolutionConstraint(50, -1)).toEqual(250);
+      });
+    });
+  });
+
+  describe('createSnapToPower', function() {
+
+    var resolutionConstraint;
+
+    beforeEach(function() {
+      resolutionConstraint =
+          ol.interaction.ResolutionConstraint.createSnapToPower(2, 1024, 10);
+    });
+
+    describe('delta 0', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1024, 0)).toEqual(1024);
+        expect(resolutionConstraint(512, 0)).toEqual(512);
+        expect(resolutionConstraint(256, 0)).toEqual(256);
+        expect(resolutionConstraint(128, 0)).toEqual(128);
+        expect(resolutionConstraint(64, 0)).toEqual(64);
+        expect(resolutionConstraint(32, 0)).toEqual(32);
+        expect(resolutionConstraint(16, 0)).toEqual(16);
+        expect(resolutionConstraint(8, 0)).toEqual(8);
+        expect(resolutionConstraint(4, 0)).toEqual(4);
+        expect(resolutionConstraint(2, 0)).toEqual(2);
+        expect(resolutionConstraint(1, 0)).toEqual(1);
+      });
+    });
+
+    describe('zoom in', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1024, 1)).toEqual(512);
+        expect(resolutionConstraint(512, 1)).toEqual(256);
+        expect(resolutionConstraint(256, 1)).toEqual(128);
+        expect(resolutionConstraint(128, 1)).toEqual(64);
+        expect(resolutionConstraint(64, 1)).toEqual(32);
+        expect(resolutionConstraint(32, 1)).toEqual(16);
+        expect(resolutionConstraint(16, 1)).toEqual(8);
+        expect(resolutionConstraint(8, 1)).toEqual(4);
+        expect(resolutionConstraint(4, 1)).toEqual(2);
+        expect(resolutionConstraint(2, 1)).toEqual(1);
+        expect(resolutionConstraint(1, 1)).toEqual(1);
+      });
+    });
+
+    describe('zoom out', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1024, -1)).toEqual(1024);
+        expect(resolutionConstraint(512, -1)).toEqual(1024);
+        expect(resolutionConstraint(256, -1)).toEqual(512);
+        expect(resolutionConstraint(128, -1)).toEqual(256);
+        expect(resolutionConstraint(64, -1)).toEqual(128);
+        expect(resolutionConstraint(32, -1)).toEqual(64);
+        expect(resolutionConstraint(16, -1)).toEqual(32);
+        expect(resolutionConstraint(8, -1)).toEqual(16);
+        expect(resolutionConstraint(4, -1)).toEqual(8);
+        expect(resolutionConstraint(2, -1)).toEqual(4);
+        expect(resolutionConstraint(1, -1)).toEqual(2);
+      });
+    });
+  });
+
+  describe('createSnapToPower Nearest', function() {
+
+    var resolutionConstraint;
+
+    beforeEach(function() {
+      resolutionConstraint =
+          ol.interaction.ResolutionConstraint.createSnapToPower(2, 1024, 10);
+    });
+
+    describe('delta 0', function() {
+      it('returns expected resolution value', function() {
+        expect(resolutionConstraint(1050, 0)).toEqual(1024);
+        expect(resolutionConstraint(9050, 0)).toEqual(1024);
+        expect(resolutionConstraint(550, 0)).toEqual(512);
+        expect(resolutionConstraint(450, 0)).toEqual(512);
+        expect(resolutionConstraint(300, 0)).toEqual(256);
+        expect(resolutionConstraint(250, 0)).toEqual(256);
+        expect(resolutionConstraint(150, 0)).toEqual(128);
+        expect(resolutionConstraint(100, 0)).toEqual(128);
+        expect(resolutionConstraint(75, 0)).toEqual(64);
+        expect(resolutionConstraint(50, 0)).toEqual(64);
+        expect(resolutionConstraint(40, 0)).toEqual(32);
+        expect(resolutionConstraint(30, 0)).toEqual(32);
+        expect(resolutionConstraint(20, 0)).toEqual(16);
+        expect(resolutionConstraint(12, 0)).toEqual(16);
+        expect(resolutionConstraint(9, 0)).toEqual(8);
+        expect(resolutionConstraint(7, 0)).toEqual(8);
+        expect(resolutionConstraint(5, 0)).toEqual(4);
+        expect(resolutionConstraint(3.5, 0)).toEqual(4);
+        expect(resolutionConstraint(2.1, 0)).toEqual(2);
+        expect(resolutionConstraint(1.9, 0)).toEqual(2);
+        expect(resolutionConstraint(1.1, 0)).toEqual(1);
+        expect(resolutionConstraint(0.9, 0)).toEqual(1);
+      });
+    });
+  });
+});