Add initial ol.TileGrid tests

src/ol/tilegrid_test.js

@@ -0,0 +1,187 @@
+goog.require('goog.math.Coordinate');
+goog.require('goog.math.Size');
+goog.require('goog.positioning.Corner');
+goog.require('goog.testing.jsunit');
+goog.require('ol.Extent');
+goog.require('ol.TileCoord');
+goog.require('ol.TileGrid');
+
+
+var corner;
+var extent;
+var resolutions;
+var origin;
+var origins;
+var tileSize;
+
+
+function setUp() {
+  corner = goog.positioning.Corner.TOP_LEFT;
+  resolutions = [1000, 500, 250, 100];
+  extent = new ol.Extent(100000, 100000, 0, 0);
+  origin = new goog.math.Coordinate(0, 100000);
+  origins = [];
+  tileSize = new goog.math.Size(100, 100);
+}
+
+
+function testCreateValid() {
+  assertNotThrows(function() {
+    return new ol.TileGrid(resolutions, extent, corner, origin, tileSize);
+  });
+}
+
+
+function testCreateDuplicateResolutions() {
+  var resolutions = [100, 50, 50, 25, 10];
+  assertThrows(function() {
+    return new ol.TileGrid(resolutions, extent, corner, origin, tileSize);
+  });
+}
+
+
+function testCreateOutOfOrderResolutions() {
+  var resolutions = [100, 25, 50, 10];
+  assertThrows(function() {
+    return new ol.TileGrid(resolutions, extent, corner, origin, tileSize);
+  });
+}
+
+
+function testCreateOrigins() {
+  var resolutions = [100, 50, 25, 10];
+  var origins = [origin, origin, origin, origin];
+  assertNotThrows(function() {
+    return new ol.TileGrid(resolutions, extent, corner, origins, tileSize);
+  });
+}
+
+
+function testCreateTooFewOrigins() {
+  var resolutions = [100, 50, 25, 10];
+  var origins = [origin, origin, origin];
+  assertThrows(function() {
+    return new ol.TileGrid(resolutions, extent, corner, origins, tileSize);
+  });
+}
+
+
+function testCreateTooManyOrigins() {
+  var resolutions = [100, 50, 25, 10];
+  var origins = [origin, origin, origin, origin, origin];
+  assertThrows(function() {
+    return new ol.TileGrid(resolutions, extent, corner, origins, tileSize);
+  });
+}
+
+
+function testGetTileCoordTopLeft() {
+
+  corner = goog.positioning.Corner.TOP_LEFT;
+  origin = new goog.math.Coordinate(0, 100000);
+  var tileGrid =
+      new ol.TileGrid(resolutions, extent, corner, origin, tileSize);
+  var tileCoord;
+
+  tileCoord = tileGrid.getTileCoord(3, new goog.math.Coordinate(0, 0));
+  assertEquals(3, tileCoord.z);
+  assertEquals(0, tileCoord.x);
+  assertEquals(10, tileCoord.y);
+
+  tileCoord = tileGrid.getTileCoord(3, new goog.math.Coordinate(0, 100000));
+  assertEquals(3, tileCoord.z);
+  assertEquals(0, tileCoord.x);
+  assertEquals(0, tileCoord.y);
+
+  tileCoord = tileGrid.getTileCoord(3, new goog.math.Coordinate(100000, 0));
+  assertEquals(3, tileCoord.z);
+  assertEquals(10, tileCoord.x);
+  assertEquals(10, tileCoord.y);
+
+  tileCoord =
+      tileGrid.getTileCoord(3, new goog.math.Coordinate(100000, 100000));
+  assertEquals(3, tileCoord.z);
+  assertEquals(10, tileCoord.x);
+  assertEquals(0, tileCoord.y);
+
+}
+
+
+function testGetTileCoordBottomLeft() {
+
+  corner = goog.positioning.Corner.BOTTOM_LEFT;
+  origin = new goog.math.Coordinate(0, 0);
+  var tileGrid =
+      new ol.TileGrid(resolutions, extent, corner, origin, tileSize);
+  var tileCoord;
+
+  tileCoord = tileGrid.getTileCoord(3, new goog.math.Coordinate(0, 0));
+  assertEquals(3, tileCoord.z);
+  assertEquals(0, tileCoord.x);
+  assertEquals(0, tileCoord.y);
+
+  tileCoord = tileGrid.getTileCoord(3, new goog.math.Coordinate(0, 100000));
+  assertEquals(3, tileCoord.z);
+  assertEquals(0, tileCoord.x);
+  assertEquals(10, tileCoord.y);
+
+  tileCoord = tileGrid.getTileCoord(3, new goog.math.Coordinate(100000, 0));
+  assertEquals(3, tileCoord.z);
+  assertEquals(10, tileCoord.x);
+  assertEquals(0, tileCoord.y);
+
+  tileCoord =
+      tileGrid.getTileCoord(3, new goog.math.Coordinate(100000, 100000));
+  assertEquals(3, tileCoord.z);
+  assertEquals(10, tileCoord.x);
+  assertEquals(10, tileCoord.y);
+
+}
+
+
+function testGetTileCoordCenter() {
+
+  var tileGrid =
+      new ol.TileGrid(resolutions, extent, corner, origin, tileSize);
+  var center;
+
+  center = tileGrid.getTileCoordCenter(new ol.TileCoord(0, 0, 0));
+  assertEquals(50000, center.x);
+  assertEquals(50000, center.y);
+
+  center = tileGrid.getTileCoordCenter(new ol.TileCoord(3, 0, 0));
+  assertEquals(5000, center.x);
+  assertEquals(95000, center.y);
+
+  center = tileGrid.getTileCoordCenter(new ol.TileCoord(3, 9, 9));
+  assertEquals(95000, center.x);
+  assertEquals(5000, center.y);
+
+}
+
+
+function testGetTileCoordExtent() {
+
+  var tileGrid =
+      new ol.TileGrid(resolutions, extent, corner, origin, tileSize);
+  var tileCoordExtent;
+
+  tileCoordExtent = tileGrid.getTileCoordExtent(new ol.TileCoord(0, 0, 0));
+  assertEquals(tileCoordExtent.top, 100000);
+  assertEquals(tileCoordExtent.right, 100000);
+  assertEquals(tileCoordExtent.bottom, 0);
+  assertEquals(tileCoordExtent.left, 0);
+
+  tileCoordExtent = tileGrid.getTileCoordExtent(new ol.TileCoord(3, 9, 0));
+  assertEquals(tileCoordExtent.top, 100000);
+  assertEquals(tileCoordExtent.right, 100000);
+  assertEquals(tileCoordExtent.bottom, 90000);
+  assertEquals(tileCoordExtent.left, 90000);
+
+  tileCoordExtent = tileGrid.getTileCoordExtent(new ol.TileCoord(3, 0, 9));
+  assertEquals(tileCoordExtent.top, 10000);
+  assertEquals(tileCoordExtent.right, 10000);
+  assertEquals(tileCoordExtent.bottom, 0);
+  assertEquals(tileCoordExtent.left, 0);
+
+}