openrosa-xpath-evaluator/test/integration/openrosa-xpath/geo.spec.js

Wrapper for browsers' XPath evaluator with added support for OpenRosa extensions.

const { initDoc, assertThrow, assertNumberValue } = require('../helpers');

describe('distance() and area() functions', () => {
    const SHAPE1 =
        '7.9377 -11.5845 0 0;7.9324 -11.5902 0 0;7.927 -11.5857 0 0;7.925 -11.578 0 0;7.9267 -11.5722 0 0;7.9325 -11.5708 0 0;7.9372 -11.5737 0 0;7.9393 -11.579 0 0;7.9377 -11.5845 0 0';
    const TRACE1 =
        '38.253094215699576 21.756382658677467;38.25021274773806 21.756382658677467;38.25007793942195 21.763892843919166;38.25290886154963 21.763935759263404;38.25146813817506 21.758421137528785';
    const TRACE2 =
        '38.25304740874071 21.75644703234866;38.25308110946615 21.763377860443143;38.25078942453431 21.763399318115262;38.25090738066984 21.756640151397733;38.25197740258244 21.75892539347842';
    const TRACE3 =
        '38.252845204059824 21.763313487426785;38.25303055837213 21.755867675201443;38.25072202094234 21.755803302185086;38.25062091543717 21.76294870700076;38.25183417221606 21.75692982997134';
    const LINE = '7.9377 -11.5845 0 0;7.9324 -11.5902 0 0';
    const SAME = '7.9377 -11.5845 0 0;7.9377 -11.5845 0 0';

    [
        [SHAPE1, 2333220.77, 5724.36],
        [TRACE1, 151451.76, 1800.69],
        [TRACE2, 122754.94, 1684.62],
        [TRACE3, 93911.49, 2076.24],
        [LINE, 0.0, 861.99],
        [SAME, 0.0, 0.0],
        ['0 0;0 1', 0.0, 111318.85],
        ['0 0;0 90', 0.0, 10018696.05],
        ['90 0;90 1', 0.0, 0.0],
        ['5000 5000; 5000 5000', NaN, NaN],
        ['a', NaN, NaN],
        ['', NaN, NaN],
    ].forEach((t, i) => {
        it(`area() works (${i + 1})`, () => {
            assertNumberValue(`area("${t[0]}")`, t[1]);
        });
        it(`distance() works (${i + 1})`, () => {
            assertNumberValue(`distance("${t[0]}")`, t[2]);
        });
    });

    describe('area with nodes', () => {
        let doc = null;
        beforeEach(() => {
            doc = initDoc(`
        <root>
          <div id="FunctionArea1">
            <div>7.9377 -11.5845 0 0</div>
            <div>7.9324 -11.5902 0 0</div>
            <div>7.927 -11.5857 0 0</div>
            <div>7.925 -11.578 0 0</div>
            <div>7.9267 -11.5722 0 0</div>
            <div>7.9325 -11.5708 0 0</div>
            <div>7.9372 -11.5737 0 0</div>
            <div>7.9393 -11.579 0 0</div>
            <div>7.9377 -11.5845 0 0</div>
          </div>
          <div id="FunctionArea2">
            <div>38.25304740874071 21.75644703234866</div>
            <div>38.25308110946615 21.763377860443143</div>
            <div>38.25078942453431 21.763399318115262</div>
            <div>38.25090738066984 21.756640151397733</div>
            <div>38.25197740258244 21.75892539347842</div>
          </div>
          <div id="FunctionArea3">
            <div>38.252845204059824 21.763313487426785</div>
            <div>38.25303055837213 21.755867675201443</div>
            <div>38.25072202094234 21.755803302185086</div>
            <div>38.25062091543717 21.76294870700076</div>
            <div>38.25183417221606 21.75692982997134</div>
          </div>

          <div id="FunctionArea4">7.9377 -11.5845 0 0;7.9324 -11.5902 0 0;7.927 -11.5857 0 0;7.925 -11.578 0 0;7.9267 -11.5722 0 0;7.9325 -11.5708 0 0;7.9372 -11.5737 0 0;7.9393 -11.579 0 0;7.9377 -11.5845 0 0</div>
        </root>`);
        });

        [
            ['FunctionArea1', './*', 2333220.77, 5724.36],
            ['FunctionArea4', '.', 2333220.77, 5724.36],
            ['FunctionArea2', './*', 122754.94, 1684.62],
            ['FunctionArea3', './*', 93911.49, 2076.24],
        ].forEach((t, i) => {
            it(`area() works (${i + 1})`, () => {
                const node = doc.getElementById(t[0]);
                assertNumberValue(node, null, `area(${t[1]})`, t[2]);
            });
            it(`distance() works (${i + 1})`, () => {
                const node = doc.getElementById(t[0]);
                assertNumberValue(node, null, `distance(${t[1]})`, t[3]);
            });
        });
    });

    describe('variadic distance', () => {
        // https://www.mapdevelopers.com/area_finder.php?polygons=[[[[38.253094215699576%2C21.756382658677467]%2C[38.25021274773806%2C21.756382658677467]]]]
        it('works with literal geopoint string arguments', () => {
            assertNumberValue(
                "distance('38.253094215699576 21.756382658677467 0 0', '38.25021274773806 21.756382658677467 0 0')",
                320.76
            );
        });

        it('works with nodeset reference arguments', () => {
            const doc = initDoc(`
                    <root id="root">
                        <point1>38.253094215699576 21.756382658677467 0 0</point1>
                        <point2>38.25021274773806 21.756382658677467 0 0</point2>
                    </root>
                `);

            const node = doc.getElementById('root');
            assertNumberValue(
                node,
                null,
                'distance(/root/point1, /root/point2)',
                320.76
            );
        });
    });

    it('throws error when no parameters are provided', () => {
        assertThrow('area()');
        assertThrow('distance()');
    });
});