feat(change_detection): uppercase and lowercase pipes

because the world needs more uppercase madness

[✔] clang-format
[✔] tests

modules/angular2/test/change_detection/pipes/lowercase_pipe_spec.js

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+import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
+
+import {LowerCasePipe} from 'angular2/src/change_detection/pipes/lowercase_pipe';
+
+export function main() {
+  describe("LowerCasePipe", () => {
+    var str;
+    var upper;
+    var lower;
+    var pipe;
+
+    beforeEach(() => {
+      str = 'something';
+      lower = 'something';
+      upper = 'SOMETHING';
+      pipe = new LowerCasePipe();
+    });
+
+    describe("supports", () => {
+      it("should support strings", () => {
+        expect(pipe.supports(str)).toBe(true);
+      });
+
+      it("should not support other objects", () => {
+        expect(pipe.supports(new Object())).toBe(false);
+        expect(pipe.supports(null)).toBe(false);
+      });
+    });
+
+    describe("transform", () => {
+
+      it("should return lowercase", () => {
+        var val = pipe.transform(upper);
+        expect(val).toEqual(lower);
+      });
+
+      it("should lowercase when there is a new value", () => {
+        var val = pipe.transform(upper);
+        expect(val).toEqual(lower);
+        var val2 = pipe.transform('WAT');
+        expect(val2).toEqual('wat');
+      });
+
+    });
+
+  });
+}

modules/angular2/test/change_detection/pipes/uppercase_pipe_spec.js

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+import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
+
+import {UpperCasePipe} from 'angular2/src/change_detection/pipes/uppercase_pipe';
+
+export function main() {
+  describe("UpperCasePipe", () => {
+    var str;
+    var upper;
+    var lower;
+    var pipe;
+
+    beforeEach(() => {
+      str = 'something';
+      lower = 'something';
+      upper = 'SOMETHING';
+      pipe = new UpperCasePipe();
+    });
+
+    describe("supports", () => {
+      it("should support strings", () => {
+        expect(pipe.supports(str)).toBe(true);
+      });
+
+      it("should not support other objects", () => {
+        expect(pipe.supports(new Object())).toBe(false);
+        expect(pipe.supports(null)).toBe(false);
+      });
+    });
+
+    describe("transform", () => {
+
+      it("should return uppercase", () => {
+        var val = pipe.transform(lower);
+        expect(val).toEqual(upper);
+      });
+
+      it("should uppercase when there is a new value", () => {
+        var val = pipe.transform(lower);
+        expect(val).toEqual(upper);
+        var val2 = pipe.transform('wat');
+        expect(val2).toEqual('WAT');
+      });
+
+    });
+
+  });
+}