Solved functions

package.json

@@ -20,6 +20,7 @@
         "build": "react-scripts build",
         "test": "react-scripts test",
         "test:cov": "react-scripts test --coverage --watchAll",
+        "test:json": "react-scripts test --json --watchAll=false --outputFile jest-output.json --coverage",
         "eject": "react-scripts eject",
         "lint": "eslint ./src --ext .tsx --ext .ts --max-warnings 0",
         "eslint-output": "eslint-output ./src --ext .tsx --ext .ts --max-warnings 0",

public/tasks/task-first-branch.md

@@ -0,0 +1,5 @@
+# Task - First Branch
+
+Version: 0.0.1
+
+Pass a short test to have certain text on the page.

public/tasks/task-functions.md

@@ -0,0 +1,5 @@
+# Task - Functions
+
+Version: 0.0.1
+
+Implement a bunch of functions that work on primitives.

public/tasks/task-html-css.md

@@ -0,0 +1,5 @@
+# Task - HTML/CSS
+
+Version: 0.0.1
+
+Add in some HTML and CSS, including a fancy looking button.

src/App.css

@@ -15,7 +15,7 @@
 
 .App-header {
     width: 100%;
-    background-color: #282c34;
+    background-color: #a2f705;
     min-height: 40vh;
     display: flex;
     flex-direction: column;

src/App.tsx

@@ -1,16 +1,63 @@
 import React from "react";
 import "./App.css";
+import { Button, Container, Row, Col } from "react-bootstrap";
 
 function App(): React.JSX.Element {
     return (
-        <div className="App">
-            <header className="App-header">
-                UM COS420 with React Hooks and TypeScript
-            </header>
+        <div
+            className="App"
+            style={{ border: "3px solid black", padding: "4px" }}
+        >
+            <header className="App-header">Vasu Patel</header>
+            <h1>
+                <span style={{ color: "red" }}>Hello World</span>
+            </h1>
             <p>
-                Edit <code>src/App.tsx</code> and save. This page will
+                COS420 Edit <code>src/App.tsx</code> and save. This page will
                 automatically reload.
             </p>
+            <ol>
+                <li>Task 1</li>
+                <li>Task 2</li>
+                <li>Task 3</li>
+            </ol>
+            <img
+                src="https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.pngegg.com%2Fen%2Fsearch%3Fq%3Dcomputer&psig=AOvVaw1mzKWIjnBqfIaAg6ct9jjl&ust=1740600619635000&source=images&cd=vfe&opi=89978449&ved=0CBEQjRxqFwoTCMCu3-PQ34sDFQAAAAAdAAAAABAE/800x600"
+                alt="This isan image of a computer"
+            />
+            <Button
+                onClick={() => {
+                    console.log("Hello World!");
+                }}
+            >
+                Log Hello World
+            </Button>
+            <Container>
+                <Row>
+                    <Col>
+                        <div
+                            style={{
+                                width: "auto",
+                                height: "auto",
+                                backgroundColor: "red",
+                            }}
+                        >
+                            First column.
+                        </div>
+                    </Col>
+                    <Col>
+                        <div
+                            style={{
+                                width: "auto",
+                                height: "auto",
+                                backgroundColor: "red",
+                            }}
+                        >
+                            Second column.
+                        </div>
+                    </Col>
+                </Row>
+            </Container>
         </div>
     );
 }

src/HtmlCss.test.tsx

@@ -0,0 +1,83 @@
+import React from "react";
+import { render, screen } from "@testing-library/react";
+import App from "./App";
+import userEvent from "@testing-library/user-event";
+
+describe("Some HTML Elements are added.", () => {
+    test("(2 pts) There is a heading", () => {
+        render(<App />);
+        const heading = screen.getAllByRole("heading");
+        expect(heading[0]).toBeInTheDocument();
+    });
+
+    test("(2 pts) There is an image with alt text", () => {
+        render(<App />);
+        const image = screen.getByRole("img");
+        expect(image).toBeInTheDocument();
+        expect(image).toHaveAttribute("alt");
+    });
+
+    test("(2 pts) There is a list with at least three elements", () => {
+        render(<App />);
+        const list = screen.getByRole("list");
+        expect(list).toBeInTheDocument();
+        expect(list.children.length).toBeGreaterThanOrEqual(3);
+    });
+});
+
+describe("(2 pts) Some basic CSS is added.", () => {
+    test("The background color of the header area is different", () => {
+        render(<App />);
+        const banner = screen.getByRole("banner");
+        expect(banner).not.toHaveStyle({
+            "background-color": "rgb(40, 44, 52)",
+        });
+    });
+});
+
+describe("(2 pts) Some Bootstrap Elements are added", () => {
+    test("There is one bootstrap button with the text 'Log Hello World'", () => {
+        render(<App />);
+        const button = screen.getByRole("button", { name: /Log Hello World/i });
+        expect(button).toBeInTheDocument();
+        expect(button).toHaveClass("btn");
+        expect(button).toHaveClass("btn-primary");
+    });
+
+    test("(2 pts) Not clicking the bootstrap button does not logs 'Hello World!'", () => {
+        const consoleSpy = jest.spyOn(console, "log");
+        render(<App />);
+        expect(consoleSpy).not.toHaveBeenCalledWith("Hello World!");
+    });
+
+    test("(2 pts) Clicking the bootstrap button logs 'Hello World!'", () => {
+        const consoleSpy = jest.spyOn(console, "log");
+        render(<App />);
+        const button = screen.getByRole("button", { name: /Log Hello World/i });
+        userEvent.click(button);
+        expect(consoleSpy).toHaveBeenCalledWith("Hello World!");
+    });
+});
+
+describe("Some additional CSS was added", () => {
+    test("(2 pts) checks if any element has a background color of red", () => {
+        const { container } = render(<App />);
+        // Get all elements in the rendered container
+        const elements = container.querySelectorAll("*");
+
+        // Check if any element has a background color of red
+        let foundRedBackground = false;
+
+        elements.forEach((element) => {
+            const style = getComputedStyle(element);
+            if (
+                style.backgroundColor === "red" ||
+                style.backgroundColor === "rgb(255, 0, 0)"
+            ) {
+                foundRedBackground = true;
+            }
+        });
+
+        expect(foundRedBackground).toBe(true);
+    });
+});

src/functions.test.ts

@@ -0,0 +1,59 @@
+import {
+    add3,
+    fahrenheitToCelius,
+    shout,
+    isQuestion,
+    convertYesNo,
+} from "./functions";
+
+describe("Testing the basic functions", () => {
+    test("(3 pts) Testing the fahrenheitToCelius function", () => {
+        expect(fahrenheitToCelius(32)).toBe(0);
+        expect(fahrenheitToCelius(-40)).toBe(-40);
+        expect(fahrenheitToCelius(-22)).toBe(-30);
+        expect(fahrenheitToCelius(14)).toBe(-10);
+        expect(fahrenheitToCelius(68)).toBe(20);
+        expect(fahrenheitToCelius(86)).toBe(30);
+        expect(fahrenheitToCelius(212)).toBe(100);
+    });
+
+    test("(3 pts) Testing the add3 function", () => {
+        expect(add3(1, 2, 3)).toBe(6);
+        expect(add3(9, 7, 4)).toBe(20);
+        expect(add3(6, -3, 9)).toBe(15);
+        expect(add3(10, 1, -9)).toBe(11);
+        expect(add3(-9, -100, -4)).toBe(0);
+        expect(add3(-1, -1, 1)).toBe(1);
+    });
+
+    test("(3 pts) Testing the shout function", () => {
+        expect(shout("Hello")).toBe("HELLO!");
+        expect(shout("What?")).toBe("WHAT?!");
+        expect(shout("oHo")).toBe("OHO!");
+        expect(shout("AHHHH!!!")).toBe("AHHHH!!!!");
+        expect(shout("")).toBe("!");
+        expect(shout("Please go outside")).toBe("PLEASE GO OUTSIDE!");
+    });
+
+    test("(3 pts) Testing the isQuestion function", () => {
+        expect(isQuestion("Is this a question?")).toBe(true);
+        expect(isQuestion("Who are you?")).toBe(true);
+        expect(isQuestion("WHAT ARE YOU !?")).toBe(true);
+        expect(isQuestion("WHAT IS THIS?!")).toBe(false);
+        expect(isQuestion("OH GOD!")).toBe(false);
+        expect(isQuestion("Oh nevermind, it's fine.")).toBe(false);
+        expect(isQuestion("")).toBe(false);
+    });
+
+    test("(3 pts) Testing the convertYesNo function", () => {
+        expect(convertYesNo("yes")).toBe(true);
+        expect(convertYesNo("YES")).toBe(true);
+        expect(convertYesNo("NO")).toBe(false);
+        expect(convertYesNo("no")).toBe(false);
+        expect(convertYesNo("Apple")).toBe(null);
+        expect(convertYesNo("Bananas")).toBe(null);
+        expect(convertYesNo("Nope")).toBe(null);
+        expect(convertYesNo("Yesterday")).toBe(null);
+        expect(convertYesNo("Maybe")).toBe(null);
+    });
+});

src/functions.ts

@@ -0,0 +1,62 @@
+/**
+ * Consumes a single temperature in Fahrenheit (a number) and converts to Celsius
+ * using this formula:
+ *      C = (F - 32) * 5/9
+ */
+export function fahrenheitToCelius(temperature: number): number {
+    return ((temperature - 32) * 5) / 9;
+}
+
+/**
+ * Consumes three numbers and produces their sum. BUT you should only add a number
+ * if the number is greater than zero.
+ */
+export function add3(first: number, second: number, third: number): number {
+    if (first > 0 && second > 0 && third > 0) {
+        return first + second + third;
+    } else if (first > 0 && second > 0) {
+        return first + second;
+    } else if (first > 0 && third > 0) {
+        return first + third;
+    } else if (second > 0 && third > 0) {
+        return second + third;
+    } else if (first > 0) {
+        return first;
+    } else if (second > 0) {
+        return second;
+    } else if (third > 0) {
+        return third;
+    }
+    return 0;
+}
+
+/**
+ * Consumes a string and produces the same string in UPPERCASE and with an exclamation
+ * mark added to the end.
+ */
+export function shout(message: string): string {
+    return message.toUpperCase() + "!";
+}
+
+/**
+ * Consumes a string (a message) and returns a boolean if the string ends in a question
+ * mark. Do not use an `if` statement in solving this question.
+ */
+export function isQuestion(message: string): boolean {
+    return message.endsWith("?");
+}
+
+/**
+ * Consumes a word (a string) and returns either `true`, `false`, or `null`. If the string
+ * is "yes" (upper or lower case), then return `true`. If the string is "no" (again, either
+ * upper or lower case), then return `false`. Otherwise, return `null`.
+ */
+export function convertYesNo(word: string): boolean | null {
+    if (word.toLowerCase() === "yes" || word.toUpperCase() === "YES") {
+        return true;
+    }
+    if (word.toLowerCase() === "no" || word.toUpperCase() === "NO") {
+        return false;
+    }
+    return null;
+}

src/text.test.tsx

@@ -0,0 +1,9 @@
+import React from "react";
+import { render, screen } from "@testing-library/react";
+import App from "./App";
+
+test("renders the text 'Hello World' somewhere", () => {
+    render(<App />);
+    const texts = screen.getAllByText(/Hello World/);
+    expect(texts.length).toBeGreaterThanOrEqual(1);
+});