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tests/unit/modules/default/weather/weather_object_spec.js

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+const WeatherObject = require("../../../../../modules/default/weather/weatherobject");
+
+global.moment = require("moment-timezone");
+global.SunCalc = require("suncalc");
+
+describe("WeatherObject", () => {
+	let originalTimeZone;
+	let weatherobject;
+
+	beforeAll(() => {
+		originalTimeZone = moment.tz.guess();
+		moment.tz.setDefault("Africa/Dar_es_Salaam");
+		weatherobject = new WeatherObject();
+	});
+
+	it("should return true for daytime at noon", () => {
+		weatherobject.date = moment("12:00", "HH:mm");
+		weatherobject.updateSunTime(-6.774877582342688, 37.63345667023327);
+		expect(weatherobject.isDayTime()).toBe(true);
+	});
+
+	it("should return false for daytime at midnight", () => {
+		weatherobject.date = moment("00:00", "HH:mm");
+		weatherobject.updateSunTime(-6.774877582342688, 37.63345667023327);
+		expect(weatherobject.isDayTime()).toBe(false);
+	});
+
+	it("should return sunrise as the next sunaction", () => {
+		weatherobject.updateSunTime(-6.774877582342688, 37.63345667023327);
+		let midnight = moment("00:00", "HH:mm");
+		expect(weatherobject.nextSunAction(midnight)).toBe("sunrise");
+	});
+
+	it("should return sunset as the next sunaction", () => {
+		weatherobject.updateSunTime(-6.774877582342688, 37.63345667023327);
+		let noon = moment(weatherobject.sunrise).hour(14);
+		expect(weatherobject.nextSunAction(noon)).toBe("sunset");
+	});
+
+	it("should return an already defined feelsLike info", () => {
+		weatherobject.feelsLikeTemp = "feelsLikeTempValue";
+		expect(weatherobject.feelsLike()).toBe("feelsLikeTempValue");
+	});
+
+	afterAll(() => {
+		moment.tz.setDefault(originalTimeZone);
+	});
+});

tests/unit/modules/default/weather/weather_utils_spec.js

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+const weather = require("../../../../../modules/default/weather/weatherutils");
+const WeatherUtils = require("../../../../../modules/default/weather/weatherutils");
+
+describe("Weather utils tests", () => {
+	describe("windspeed conversion", () => {
+		it("should convert windspeed correctly from mps to beaufort", () => {
+			expect(Math.round(WeatherUtils.convertWind(5, "beaufort"))).toBe(3);
+			expect(Math.round(WeatherUtils.convertWind(300, "beaufort"))).toBe(12);
+		});
+
+		it("should convert windspeed correctly from mps to mps", () => {
+			expect(WeatherUtils.convertWind(11.75, "FOOBAR")).toBe(11.75);
+		});
+
+		it("should convert windspeed correctly from mps to kmh", () => {
+			expect(Math.round(WeatherUtils.convertWind(11.75, "kmh"))).toBe(42);
+		});
+
+		it("should convert windspeed correctly from mps to knots", () => {
+			expect(Math.round(WeatherUtils.convertWind(10, "knots"))).toBe(19);
+		});
+
+		it("should convert windspeed correctly from mph to mps", () => {
+			expect(Math.round(WeatherUtils.convertWindToMetric(93.951324266285))).toBe(42);
+		});
+
+		it("should convert windspeed correctly from kmh to mps", () => {
+			expect(Math.round(WeatherUtils.convertWindToMs(151.2))).toBe(42);
+		});
+	});
+
+	describe("wind direction conversion", () => {
+		it("should convert wind direction correctly from cardinal to value", () => {
+			expect(WeatherUtils.convertWindDirection("SSE")).toBe(157);
+		});
+	});
+
+	describe("feelsLike calculation", () => {
+		it("should return a calculated feelsLike info", () => {
+			expect(WeatherUtils.calculateFeelsLike(0, 20, 40)).toBe(-9.444444444444445);
+		});
+
+		it("should return a calculated feelsLike info", () => {
+			expect(WeatherUtils.calculateFeelsLike(30, 0, 60)).toBe(32.8320322777777);
+		});
+	});
+
+	describe("precipitationUnit conversion", () => {
+		it("should keep value and unit if outputUnit is undefined", () => {
+			const values = [1, 2];
+			const units = ["mm", "cm"];
+
+			for (let i = 0; i < values.length; i++) {
+				const result = weather.convertPrecipitationUnit(values[i], units[i], undefined);
+				expect(result).toBe(`${values[i].toFixed(2)} ${units[i]}`);
+			}
+		});
+
+		it("should keep value and unit if outputUnit is metric", () => {
+			const values = [1, 2];
+			const units = ["mm", "cm"];
+
+			for (let i = 0; i < values.length; i++) {
+				const result = weather.convertPrecipitationUnit(values[i], units[i], "metric");
+				expect(result).toBe(`${values[i].toFixed(2)} ${units[i]}`);
+			}
+		});
+
+		it("should use mm unit if input unit is undefined", () => {
+			const values = [1, 2];
+
+			for (let i = 0; i < values.length; i++) {
+				const result = weather.convertPrecipitationUnit(values[i], undefined, "metric");
+				expect(result).toBe(`${values[i].toFixed(2)} mm`);
+			}
+		});
+
+		it("should convert value and unit if outputUnit is imperial", () => {
+			const values = [1, 2];
+			const units = ["mm", "cm"];
+			const expectedValues = [0.04, 0.79];
+
+			for (let i = 0; i < values.length; i++) {
+				const result = weather.convertPrecipitationUnit(values[i], units[i], "imperial");
+				expect(result).toBe(`${expectedValues[i]} in`);
+			}
+		});
+
+		it("should round percentage values regardless of output units", () => {
+			const values = [0.1, 2.22, 9.999];
+			const output = [undefined, "imperial", "metric"];
+			const result = ["0 %", "2 %", "10 %"];
+
+			for (let i = 0; i < values.length; i++) {
+				expect(weather.convertPrecipitationUnit(values[i], "%", output[i])).toBe(result[i]);
+			}
+		});
+	});
+});