chore(binary-search): consolidate test for multiple implementations

src/runtimes/02-binary-search.js

@@ -18,9 +18,11 @@ function binarySearchRecursive(array, search, offset = 0) {
 
   if (current === search) {
     return offset + half;
-  } if (array.length === 1) {
+  }
+  if (array.length === 1) {
     return -1;
-  } if (search > current) {
+  }
+  if (search > current) {
     const right = array.slice(half);
     return binarySearchRecursive(right, search, offset + half);
   }

src/runtimes/02-binary-search.spec.js

@@ -1,57 +1,39 @@
-const { binarySearchRecursive, binarySearchIterative } = require('./02-binary-search');
-
-describe('Binary Search Recursive', () => {
-  let array;
-
-  beforeEach(() => {
-    array = [7, 9, 13, 23];
-  });
-
-  it('should find a middle element', () => {
-    expect(binarySearchRecursive(array, 9)).toEqual(1);
-  });
-
-  it('should find an first element', () => {
-    expect(binarySearchRecursive(array, 7)).toEqual(0);
-  });
-
-  it('should find the last element', () => {
-    expect(binarySearchRecursive(array, 23)).toEqual(3);
-  });
-
-  it('should not find an bigger element', () => {
-    expect(binarySearchRecursive(array, 9000)).toEqual(-1);
-  });
-
-  it('should find a smaller element', () => {
-    expect(binarySearchRecursive(array, -9)).toEqual(-1);
-  });
-});
-
-describe('Binary Search Iterative', () => {
-  let array;
-
-  beforeEach(() => {
-    array = [7, 9, 13, 23];
-  });
-
-  it('should find a middle element', () => {
-    expect(binarySearchIterative(array, 9)).toEqual(1);
-  });
-
-  it('should find an first element', () => {
-    expect(binarySearchIterative(array, 7)).toEqual(0);
-  });
-
-  it('should find the last element', () => {
-    expect(binarySearchIterative(array, 23)).toEqual(3);
-  });
-
-  it('should not find an bigger element', () => {
-    expect(binarySearchIterative(array, 9000)).toEqual(-1);
-  });
-
-  it('should find a smaller element', () => {
-    expect(binarySearchIterative(array, -9)).toEqual(-1);
+const {
+  binarySearchRecursive,
+  binarySearchIterative,
+} = require("./02-binary-search");
+
+const binarySearchImplementations = [
+  binarySearchRecursive,
+  binarySearchIterative,
+];
+
+binarySearchImplementations.forEach((binarySearchImpl) => {
+  describe(binarySearchImpl.name, () => {
+    let array;
+
+    beforeEach(() => {
+      array = [7, 9, 13, 23];
+    });
+
+    it("should find a middle element", () => {
+      expect(binarySearchImpl(array, 9)).toEqual(1);
+    });
+
+    it("should find an first element", () => {
+      expect(binarySearchImpl(array, 7)).toEqual(0);
+    });
+
+    it("should find the last element", () => {
+      expect(binarySearchImpl(array, 23)).toEqual(3);
+    });
+
+    it("should not find an bigger element", () => {
+      expect(binarySearchImpl(array, 9000)).toEqual(-1);
+    });
+
+    it("should find a smaller element", () => {
+      expect(binarySearchImpl(array, -9)).toEqual(-1);
+    });
   });
 });