5595b94560
Moved test jstest/[a-i].js -> jstests/core/ and made changes to comply with write command api
125 lines
3.6 KiB
JavaScript
125 lines
3.6 KiB
JavaScript
/* Test boundary conditions for $minDistance option for $near and $nearSphere
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* queries. SERVER-9395.
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*/
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var t = db.geo_mindistance_boundaries;
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t.drop();
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t.insert({loc: [1, 0]}); // 1 degree of longitude from origin.
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/* $minDistance is supported for 2dsphere index only, not 2d or geoHaystack. */
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t.ensureIndex({loc: "2dsphere"});
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//
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// Useful constants.
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//
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var km = 1000,
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earthRadiusMeters = 6378.1 * km,
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geoJSONPoint = {type: 'Point', coordinates: [0, 0]},
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// One degree of longitude at the equator, about 111 km.
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degreeInMeters = 2 * Math.PI * earthRadiusMeters / 360,
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metersEpsilon = Number.MIN_VALUE;
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/* Grow epsilon's exponent until epsilon exceeds the margin of error for the
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* representation of degreeInMeters. The server uses 64-bit math, too, so we'll
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* find the smallest epsilon the server can detect.
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*/
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while (degreeInMeters + metersEpsilon == degreeInMeters) { metersEpsilon *= 2; }
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//
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// Test boundary conditions for $near and GeoJSON, in meters.
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//
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// minDistance must be within the args to $near, not on the side.
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assert.throws(function() { t.find({loc:{$near:{$geometry: geoJSONPoint},
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$minDistance:0.1}}).itcount();});
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assert.eq(
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1, t.find({loc: {
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$near: {$geometry: geoJSONPoint,
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$minDistance: degreeInMeters
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}}}).itcount(),
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"Expected to find (0, 1) within $minDistance 1 degree from origin"
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);
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assert.eq(
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1, t.find({loc: {
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$near: {$geometry: geoJSONPoint,
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$minDistance: degreeInMeters - metersEpsilon
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}}}).itcount(),
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"Expected to find (0, 1) within $minDistance (1 degree - epsilon) from origin"
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);
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assert.eq(
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0, t.find({loc: {
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$near: {$geometry: geoJSONPoint,
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$minDistance: degreeInMeters + metersEpsilon
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}}}).itcount(),
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"Expected *not* to find (0, 1) within $minDistance (1 degree + epsilon) from origin"
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);
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//
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// Test boundary conditions for $nearSphere and GeoJSON, in meters.
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//
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assert.eq(
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1, t.find({loc: {
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$nearSphere: {$geometry: geoJSONPoint,
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$minDistance: degreeInMeters
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}}}).itcount(),
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"Expected to find (0, 1) within $minDistance 1 degree from origin"
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);
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assert.eq(
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1, t.find({loc: {
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$nearSphere: geoJSONPoint,
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$minDistance: degreeInMeters - metersEpsilon
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}}).itcount(),
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"Expected to find (0, 1) within $minDistance (1 degree - epsilon) from origin"
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);
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assert.eq(
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0, t.find({loc: {
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$nearSphere: geoJSONPoint,
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$minDistance: degreeInMeters + metersEpsilon
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}}).itcount(),
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"Expected *not* to find (0, 1) within $minDistance (1 degree + epsilon) from origin"
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);
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//
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// Test boundary conditions for $nearSphere and a legacy point, in radians.
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//
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// $minDistance with legacy point requires $nearSphere; $near not
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// supported.
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//
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var legacyPoint = [0, 0],
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degreeInRadians = 2 * Math.PI / 360,
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radiansEpsilon = Number.MIN_VALUE;
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while (1 + radiansEpsilon == 1) { radiansEpsilon *= 2; }
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assert.eq(
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1, t.find({loc: {
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$nearSphere: legacyPoint,
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$minDistance: degreeInRadians
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}}).itcount(),
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"Expected to find (0, 1) within $minDistance 1 degree from origin"
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);
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assert.eq(
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1, t.find({loc: {
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$nearSphere: legacyPoint,
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$minDistance: degreeInRadians - radiansEpsilon
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}}).itcount(),
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"Expected to find (0, 1) within $minDistance (1 degree - epsilon) from origin"
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);
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assert.eq(
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0, t.find({loc: {
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$nearSphere: legacyPoint,
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$minDistance: degreeInRadians + radiansEpsilon
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}}).itcount(),
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"Expected *not* to find (0, 1) within $minDistance (1 degree + epsilon) from origin"
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);
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