@maplibre/maplibre-gl-style-spec/src/validate/validate_number_array.test.ts

a specification for maplibre styles

import {validate} from './validate';
import {validateNumberArray} from './validate_number_array';
import {describe, test, expect} from 'vitest';

describe('Validate NumberArray', () => {
    test('Should return error if type is not number or array', () => {
        let errors = validateNumberArray({
            validateSpec: validate,
            key: 'numberArray',
            value: '3'
        });
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray: number expected, string found');

        errors = validateNumberArray({validateSpec: validate, key: 'numberArray', value: true});
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray: number expected, boolean found');

        errors = validateNumberArray({validateSpec: validate, key: 'numberArray', value: null});
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray: number expected, null found');

        errors = validateNumberArray({
            validateSpec: validate,
            key: 'numberArray',
            value: {x: 1, y: 1}
        });
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray: number expected, object found');

        errors = validateNumberArray({validateSpec: validate, key: 'numberArray', value: NaN});
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray: number expected, NaN found');
    });

    test('Should pass if type is number', () => {
        const errors = validateNumberArray({
            validateSpec: validate,
            key: 'numberArray',
            value: 1
        });
        expect(errors).toHaveLength(0);
    });
    test('Should return error if array contains non-numeric values', () => {
        let errors = validateNumberArray({
            validateSpec: validate,
            key: 'numberArray',
            value: ['1']
        });
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray[0]: number expected, string found');

        errors = validateNumberArray({validateSpec: validate, key: 'numberArray', value: [true]});
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray[0]: number expected, boolean found');

        errors = validateNumberArray({validateSpec: validate, key: 'numberArray', value: [NaN]});
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray[0]: number expected, NaN found');

        errors = validateNumberArray({
            validateSpec: validate,
            key: 'numberArray',
            value: [{x: 1}]
        });
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray[0]: number expected, object found');

        errors = validateNumberArray({
            validateSpec: validate,
            key: 'numberArray',
            value: [1, 3, false]
        });
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe('numberArray[2]: number expected, boolean found');

        errors = validateNumberArray({
            validateSpec: validate,
            key: 'numberArray',
            value: ['1', 3, false]
        });
        expect(errors).toHaveLength(2);
        expect(errors[0].message).toBe('numberArray[0]: number expected, string found');
        expect(errors[1].message).toBe('numberArray[2]: number expected, boolean found');
    });

    test('Should pass if type is numeric array', () => {
        let errors = validateNumberArray({validateSpec: validate, key: 'numberArray', value: []});
        expect(errors).toHaveLength(1);
        expect(errors[0].message).toBe(
            'numberArray: array length at least 1 expected, length 0 found'
        );
        errors = validateNumberArray({validateSpec: validate, key: 'numberArray', value: [1]});
        expect(errors).toHaveLength(0);
        errors = validateNumberArray({
            validateSpec: validate,
            key: 'numberArray',
            value: [1, 1, 1]
        });
        expect(errors).toHaveLength(0);
        errors = validateNumberArray({
            validateSpec: validate,
            key: 'numberArray',
            value: [1, 1, 1, 1, 1, 1, 1, 1]
        });
        expect(errors).toHaveLength(0);
    });
});