Fix parseAPI not working with non-"namespaces" pathnames. (#450)

* fix parseApi not accepting versions that don't start with 'v'
* add unit tests

Signed-off-by: Sebastian Malton <smalton@mirantis.com>
Co-authored-by: Sebastian Malton <smalton@mirantis.com>

dashboard/client/utils/__tests__/arrays.test.ts

@@ -0,0 +1,31 @@
+import { split } from "../arrays";
+
+describe("split array on element tests", () => {
+  test("empty array", () => {
+    expect(split([], 10)).toStrictEqual([[], [], false]);
+  });
+
+  test("one element, not in array", () => {
+    expect(split([1], 10)).toStrictEqual([[1], [], false]);
+  });
+
+  test("ten elements, not in array", () => {
+    expect(split([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], 10)).toStrictEqual([[0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [], false]);
+  });
+
+  test("one elements, in array", () => {
+    expect(split([1], 1)).toStrictEqual([[], [], true]);
+  });
+  
+  test("ten elements, in front array", () => {
+    expect(split([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], 0)).toStrictEqual([[], [1, 2, 3, 4, 5, 6, 7, 8, 9], true]);
+  });
+
+  test("ten elements, in middle array", () => {
+    expect(split([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], 4)).toStrictEqual([[0, 1, 2, 3], [5, 6, 7, 8, 9], true]);
+  });
+
+  test("ten elements, in end array", () => {
+    expect(split([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], 9)).toStrictEqual([[0, 1, 2, 3, 4, 5, 6, 7, 8], [], true]);
+  });
+});

dashboard/client/utils/arrays.ts

@@ -0,0 +1,19 @@
+/**
+ * This function splits an array into two sub arrays on the first instance of 
+ * element (from the left). If the array does not contain the element. The
+ * return value is defined to be `[array, [], false]`. If the element is in
+ * the array then the return value is `[left, right, true]` where `left` is
+ * the elements of `array` from `[0, index)` and `right` is `(index, length)`
+ * @param array the full array to split into two sub-arrays
+ * @param element the element in the middle of the array
+ * @returns the left and right sub-arrays which when conjoined with `element`
+ *          is the same as `array`, and `true`
+ */
+export function split<T>(array: Array<T>, element: T): [Array<T>, Array<T>, boolean] {
+  const index = array.indexOf(element);
+  if (index < 0) {
+    return [array, [], false];
+  }
+
+  return [array.slice(0, index), array.slice(index+1, array.length), true]
+}