+
+JS.Test.describe('fast lerp', function () { with (this) {
+ var lerp = m.lerp;
+ var A = "Do you like green eggs and ham?";
+ var B = "I do not like them, Sam-I-am.";
+
+ it("handles empty strings", function () { with (this) {
+ assertEqual("", lerp("", "", -1));
+ assertEqual("", lerp("", "", 0));
+ assertEqual("", lerp("", "", 0.5));
+ assertEqual("", lerp("", "", 1));
+ assertEqual("", lerp("", "", 2));
+ }});
+
+ it("maintains identity", function () { with (this) {
+ for (var i = -1; i < 2; i += 1/1024) {
+ assertEqual(A, lerp(A, A, i));
+ assertEqual(B, lerp(B, B, i));
+ }
+ }});
+
+ it("handles lows", function () { with (this) {
+ assertEqual(A, lerp(A, B, -Infinity));
+ assertEqual(A, lerp(A, B, -1));
+ assertEqual(A, lerp(A, B, 0));
+ }});
+
+ it("handles highs", function () { with (this) {
+ assertEqual(B, lerp(A, B, 1));
+ assertEqual(B, lerp(A, B, 2));
+ assertEqual(B, lerp(A, B, Infinity));
+ }});
+}});