[tests] Updated tests to reflect no-satisfying-test scenario

spec/SelectArraySpec.js

@@ -5,16 +5,20 @@ const Select = require('../Select');
 /* global describe it expect */
 describe("Select", () => {
 
-	it("Should return array [ 'Is 10', 'Greater than 10', 'Lesser than 10' ]",
-		() => {
-			const a = [ 10, 20, 0 ];
+	it("Should return array" +
+		"[ 'Is 10', 'Greater than 10', 'Lesser than 10', null ]",
+	() => {
+		const a = [ 10, 20, 0, 'UnexpectedString' ];
 
-			const result = new Select(a)
-				.for(x => x > 10, () => 'Greater than 10')
-				.for(x => x < 10, () => 'Lesser than 10')
-				.for(x => x === 10, () => `Is 10`);
+		const result = new Select(a)
+			.for(x => x > 10, () => 'Greater than 10')
+			.for(x => x < 10, () => 'Lesser than 10')
+			.for(x => x === 10, () => `Is 10`);
 
-			expect(result.resolve())
-				.toEqual([ 'Is 10', 'Greater than 10', 'Lesser than 10' ]);
-		});
+		expect(result.resolve())
+			.toEqual([ 'Is 10',
+				'Greater than 10',
+				'Lesser than 10',
+				null ]);
+	});
 });

spec/SelectSpec.js

@@ -11,9 +11,9 @@ describe("Select", () => {
 		const result = new Select(a)
 			.for(x => x > 10, () => 'Greater than 10')
 			.for(x => x < 10, () => 'Lesser than 10')
-			.for(x => x === 10, () => `Is 10`);
+			.for(x => x === 10, () => 'Is 10');
 
-		expect(result.resolve()).toBe(`Is 10`);
+		expect(result.resolve()).toBe('Is 10');
 	});
 
 	it("Should return 'Less than 10'", () => {
@@ -37,4 +37,15 @@ describe("Select", () => {
 
 		expect(result.resolve()).toBe('Greater than 10');
 	});
+
+	it("Should return 'null'", () => {
+		const a = 'UnexpectedString';
+
+		const result = new Select(a)
+			.for(x => x > 10, () => 'Greater than 10')
+			.for(x => x < 10, () => 'Lesser than 10')
+			.for(x => x === 10, () => `Is 10`);
+
+		expect(result.resolve()).toBe(null);
+	});
 });