Add lab 10 content

labs/L10/spec/arrays.spec.js

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+let array=require("../arrays.js");
+
+describe("range", function () {
+    it("empty", function () {
+        expect(array.range(2,1)).toEqual([]);
+    });
+    it("single", function () {
+        expect(array.range(2,2)).toEqual([2]);
+    });
+    it("multiple", function () {
+        expect(array.range(42,50)).toEqual([42,43,44,45,46,47,48,49,50]);
+    });
+    it("step", function() {
+        expect(array.range(2,10,2)).toEqual([2,4,6,8,10]);
+    })
+});
+
+describe("sum", function () {
+    it("empty", function () {
+        expect(array.sum([])).toBe(0);
+    });
+    it("single", function () {
+        expect(array.sum([2])).toBe(2);
+    });
+    it("multiple", function () {
+        expect(array.sum(array.range(1,10))).toBe(55);
+    })
+    it("stepped", function() {
+        expect(array.sum(array.range(2,10,2))).toBe(30)
+    });    
+});

labs/L10/spec/rec_arith.spec.js

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+let arith=require ("../rec-arith.js");
+
+describe("plus",
+	 function() {
+		it("1 + 1 = 2",
+			function() {
+				expect(arith.plus(1, 1)).toBe(2);
+			});
+		 it("0 + x = x",
+			function() {
+				expect(arith.plus(0, 1)).toBe(1);
+			});
+	});
+
+describe("mult",
+	 function() {
+		 it("0 * 2 = 0",
+		 	function() {
+				expect(arith.mult(0, 2)).toBe(0);
+			});
+
+		 it("1 * 2 = 2",
+			function() {
+				expect(arith.mult(1,2)).toBe(2);
+			});
+		 it("2 * 2 = 4",
+			function() {
+				expect(arith.mult(2, 2)).toBe(4);
+			});
+	 });

labs/L10/spec/rec_vs_loop.spec.js

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+let loop_arith=require ("../loop-arith.js");
+let rec_arith=require ("../rec-arith.js");
+
+describe("plus",
+	 function() {
+		it("1 + 1 = 2",
+			function() {
+				expect(loop_arith.plus(1, 1)).toBe(rec_arith.plus(1, 1));
+			});
+		 it("0 + x = x",
+			function() {
+				expect(loop_arith.plus(0, 1)).toBe(rec_arith.plus(0, 1));
+			});
+	});
+
+describe("mult",
+	 function() {
+		 it("0 * 2 = 0",
+		 	function() {
+				expect(loop_arith.mult(0, 2)).toBe(rec_arith.mult(0, 2));
+			});
+
+		 it("1 * 2 = 2",
+			function() {
+				expect(loop_arith.mult(1, 2)).toBe(rec_arith.mult(1, 2));
+			});
+		 it("2 * 2 = 4",
+			function() {
+				expect(loop_arith.mult(2, 2)).toBe(rec_arith.mult(2, 2));
+			});
+	 });

labs/L10/spec/support/jasmine.json

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+{
+  "spec_dir": "spec",
+  "spec_files": [
+    "**/*[sS]pec.?(m)js"
+  ],
+  "helpers": [
+    "helpers/**/*.?(m)js"
+  ],
+  "env": {
+    "stopSpecOnExpectationFailure": false,
+    "random": true
+  }
+}