Added test spec for helpers/lenses/lenses.js

helpers/lenses/__tests__/lenses.spec.js

@@ -0,0 +1,61 @@
+import { lenses, getSuitableLenses, getLensRenderers } from "../lenses"
+import rawLens from "../rawLens"
+
+describe("getSuitableLenses", () => {
+  test("returns raw lens if no content type reported (null/undefined)", () => {
+    const nullResult = getSuitableLenses({
+      headers: {
+        "content-type": null,
+      },
+    })
+
+    const undefinedResult = getSuitableLenses({
+      headers: {},
+    })
+
+    expect(nullResult).toHaveLength(1)
+    expect(nullResult).toContainEqual(rawLens)
+
+    expect(undefinedResult).toHaveLength(1)
+    expect(undefinedResult).toContainEqual(rawLens)
+  })
+
+  lenses
+    .filter((e) => e.lensName != rawLens.lensName)
+    .forEach((el) => {
+      test(`returns ${el.lensName} lens for its content-types`, () => {
+        el.supportedContentTypes.forEach((contentType) => {
+          expect(
+            getSuitableLenses({
+              headers: {
+                "content-type": contentType,
+              },
+            })
+          ).toContainEqual(el)
+        })
+      })
+
+      test(`returns Raw Lens along with ${el.lensName} for the content types`, () => {
+        el.supportedContentTypes.forEach((contentType) => {
+          expect(
+            getSuitableLenses({
+              headers: {
+                "content-type": contentType,
+              },
+            })
+          ).toContainEqual(rawLens)
+        })
+      })
+    })
+})
+
+describe("getLensRenderers", () => {
+  test("returns all the lens renderers", () => {
+    const res = getLensRenderers()
+
+    lenses.forEach((lens) => {
+      expect(res).toHaveProperty(lens.renderer)
+      expect(res[lens.renderer]).toBe(lens.rendererImport)
+    })
+  })
+})