Add sample test file to Nasal/

Nasal/test_math.nut

@@ -0,0 +1,47 @@
+
+
+# fgcommand("nasal-test", props.Node.new({"path":"test_math.nut"}));
+
+
+# note you can omit this if not needed
+var setUp = func {
+    print("Did set-up");
+};
+
+# same, cab be ommitted
+var tearDown = func {
+    print("Did tear-down");
+};
+
+
+# all test macros take an option 'message' argument
+var test_abc = func {
+    print("Ran test ABC");
+
+# fails if first argument is zero
+    unitTest.assert(1 == 1, "Math equality");
+    unitTest.assert(1 < 2, "Math less than");
+  
+  # always fails the test
+  #  unitTest.fail("broken");
+
+    print("Fofofo");
+    unitTest.assert(4 != 1, "Math inequality");
+
+    var c = "ap" ~ "ples";
+    unitTest.assert_equal("apples", c);
+};
+
+var test_def = func {
+    print("Ran test DEF");
+
+    var a = 1.0 + 2.0;
+    var b = 99.0;
+
+    unitTest.assert_equal(a,  3, "addition");
+
+# compare with a tolerance, this will fail
+    unitTest.assert_doubles_equal(3.141, 3, 0.1, "Pi-ish");
+}
+
+