Added implementation of setLocations along with tests

spec/PKPass.ts

@@ -45,4 +45,54 @@ describe("PKPass", () => {
 			expect(pass.props["beacons"].length).toBe(1);
 		});
 	});
+
+	describe("setLocations", () => {
+		it("should reset instance.props['locations'] if 'null' is passed as value", () => {
+			const pass = new PKPass({}, {});
+
+			pass.setLocations({
+				longitude: 0.25456342344,
+				latitude: 0.26665773234,
+			});
+
+			expect(pass.props["locations"].length).toBe(1);
+
+			pass.setLocations(null);
+
+			expect(pass.props["locations"]).toBeUndefined();
+		});
+
+		it("should filter out invalid beacons objects", () => {
+			const pass = new PKPass({}, {});
+
+			pass.setLocations(
+				{
+					// @ts-expect-error
+					longitude: "unknown",
+					// @ts-expect-error
+					latitude: "unknown",
+				},
+				{
+					altitude: "say hello from here",
+					longitude: 0.25456342344,
+				},
+				{
+					longitude: 0.25456342344,
+					latitude: 0.26665773234,
+					altitude: 12552.31233321,
+					relevantText:
+						/** Hi mom, see how do I fly! */
+						"Ciao mamma, guarda come volooo!",
+				},
+			);
+
+			expect(pass.props["locations"].length).toBe(1);
+			expect(pass.props["locations"][0].longitude).toBe(0.25456342344);
+			expect(pass.props["locations"][0].latitude).toBe(0.26665773234);
+			expect(pass.props["locations"][0].altitude).toBe(12552.31233321);
+			expect(pass.props["locations"][0].relevantText).toBe(
+				"Ciao mamma, guarda come volooo!",
+			);
+		});
+	});
 });