test(config-resolver): getResolvedSigningRegion.spec.ts

Author: trivikr

packages/config-resolver/src/regionInfo/getResolvedSigningRegion.spec.ts

@@ -0,0 +1,61 @@
+import { getResolvedSigningRegion } from "./getResolvedSigningRegion";
+import { isFipsRegion } from "./isFipsRegion";
+
+jest.mock("./isFipsRegion");
+
+describe(getResolvedSigningRegion.name, () => {
+  const mockRegion = "mockRegion";
+  const mockSigningRegion = "mockSigningRegion";
+  const mockHostname = "mockHostname";
+  const mockRegionRegex = "mockRegionRegex";
+
+  const mockOptions = {
+    hostname: mockHostname,
+    regionRegex: mockRegionRegex,
+  };
+
+  beforeEach(() => {
+    (isFipsRegion as jest.Mock).mockReturnValue(false);
+  });
+
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it("returns signingRegion if passed in options", () => {
+    expect(getResolvedSigningRegion(mockRegion, { ...mockOptions, signingRegion: mockSigningRegion })).toEqual(
+      mockSigningRegion
+    );
+    expect(isFipsRegion).not.toHaveBeenCalled();
+  });
+
+  describe("returns undefined if signingRegion is not present and", () => {
+    it("region is not FIPS", () => {
+      expect(getResolvedSigningRegion(mockRegion, mockOptions)).not.toBeDefined();
+      expect(isFipsRegion).toHaveBeenCalledTimes(1);
+      expect(isFipsRegion).toHaveBeenCalledWith(mockRegion);
+    });
+
+    it("regionRegex does not return a match in hostname", () => {
+      (isFipsRegion as jest.Mock).mockReturnValueOnce(true);
+      const matchSpy = jest.spyOn(String.prototype, "match").mockReturnValueOnce(null);
+
+      expect(getResolvedSigningRegion(mockRegion, mockOptions)).not.toBeDefined();
+      expect(matchSpy).toHaveBeenCalledTimes(1);
+      expect(matchSpy).toHaveBeenCalledWith(mockRegionRegex);
+      expect(isFipsRegion).toHaveBeenCalledTimes(1);
+      expect(isFipsRegion).toHaveBeenCalledWith(mockRegion);
+    });
+  });
+
+  it("returns region from hostname is signingRegion is not present", () => {
+    (isFipsRegion as jest.Mock).mockReturnValueOnce(true);
+    const matchSpy = jest.spyOn(String.prototype, "match").mockReturnValueOnce([mockSigningRegion]);
+
+    expect(getResolvedSigningRegion(mockRegion, mockOptions)).toEqual(mockSigningRegion);
+    expect(matchSpy).toHaveBeenCalledTimes(1);
+    expect(matchSpy).toHaveBeenCalledWith(mockRegionRegex);
+    expect(isFipsRegion).toHaveBeenCalledTimes(1);
+    expect(isFipsRegion).toHaveBeenCalledWith(mockRegion);
+  });
+});