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+ Hello World
+Arivattral Rajkumar
); } diff --git a/src/arrays.test.ts b/src/arrays.test.ts new file mode 100644 index 0000000000..c2847517bd --- /dev/null +++ b/src/arrays.test.ts @@ -0,0 +1,273 @@ +import { + allRGB, + bookEndList, + countShortWords, + injectPositive, + makeMath, + removeDollars, + shoutIfExclaiming, + stringsToIntegers, + tripleNumbers, +} from "./arrays"; + +describe("Testing the array functions", () => { + ////////////////////////////////// + // bookEndList and tripleNumbers + + const NUMBERS_1 = [1, 2, 3]; + const NUMBERS_2 = [100, 300, 200]; + const NUMBERS_3 = [5]; + const NUMBERS_4: number[] = []; + const NUMBERS_5 = [100, 199, 1, -5, 7, 3]; + const NUMBERS_6 = [-100, -200, 100, 200]; + const NUMBERS_7 = [199, 1, 550, 50, 200]; + + // Ensure that none of the arrays were changed mutably + // If you fail these, you aren't using map/filter/reduce/etc. properly! + afterEach(() => { + expect(NUMBERS_1).toEqual([1, 2, 3]); + expect(NUMBERS_2).toEqual([100, 300, 200]); + expect(NUMBERS_3).toEqual([5]); + expect(NUMBERS_4).toEqual([]); + expect(NUMBERS_5).toEqual([100, 199, 1, -5, 7, 3]); + expect(NUMBERS_6).toEqual([-100, -200, 100, 200]); + expect(NUMBERS_7).toEqual([199, 1, 550, 50, 200]); + }); + + test("(3 pts) Testing the bookEndList function", () => { + expect(bookEndList(NUMBERS_1)).toEqual([1, 3]); + expect(bookEndList(NUMBERS_2)).toEqual([100, 200]); + expect(bookEndList(NUMBERS_3)).toEqual([5, 5]); + expect(bookEndList(NUMBERS_4)).toEqual([]); + expect(bookEndList(NUMBERS_5)).toEqual([100, 3]); + expect(bookEndList(NUMBERS_6)).toEqual([-100, 200]); + }); + + test("(3 pts) Testing the tripleNumbers function", () => { + expect(tripleNumbers(NUMBERS_1)).toEqual([3, 6, 9]); + expect(tripleNumbers(NUMBERS_2)).toEqual([300, 900, 600]); + expect(tripleNumbers(NUMBERS_3)).toEqual([15]); + expect(tripleNumbers(NUMBERS_4)).toEqual([]); + expect(tripleNumbers(NUMBERS_5)).toEqual([300, 597, 3, -15, 21, 9]); + expect(tripleNumbers(NUMBERS_6)).toEqual([-300, -600, 300, 600]); + }); + + ////////////////////////////////// + // stringsToIntegers + + const VALUES_1 = ["1", "2", "3"]; + const VALUES_2 = ["100", "200", "300"]; + const VALUES_3 = ["5"]; + const VALUES_4: string[] = []; + const VALUES_5 = ["100", "?", "27", "$44"]; + const VALUES_6 = ["-1", "0", "1", "*1"]; + const VALUES_7 = ["apple", "banana", "cactus"]; + + // Ensure that none of the arrays were changed mutably + // If you fail these, you aren't using map/filter/reduce/etc. properly! + afterEach(() => { + expect(VALUES_1).toEqual(["1", "2", "3"]); + expect(VALUES_2).toEqual(["100", "200", "300"]); + expect(VALUES_3).toEqual(["5"]); + expect(VALUES_4).toEqual([]); + expect(VALUES_5).toEqual(["100", "?", "27", "$44"]); + expect(VALUES_6).toEqual(["-1", "0", "1", "*1"]); + expect(VALUES_7).toEqual(["apple", "banana", "cactus"]); + }); + + test("(3 pts) Testing the stringsToIntegers function", () => { + expect(stringsToIntegers(VALUES_1)).toEqual([1, 2, 3]); + expect(stringsToIntegers(VALUES_2)).toEqual([100, 200, 300]); + expect(stringsToIntegers(VALUES_3)).toEqual([5]); + expect(stringsToIntegers(VALUES_4)).toEqual([]); + expect(stringsToIntegers(VALUES_5)).toEqual([100, 0, 27, 0]); + expect(stringsToIntegers(VALUES_6)).toEqual([-1, 0, 1, 0]); + expect(stringsToIntegers(VALUES_7)).toEqual([0, 0, 0]); + }); + + ////////////////////////////////// + // removeDollars + + const AMOUNTS_1 = ["$1", "$2", "$3"]; + const AMOUNTS_2 = ["$100", "$200", "$300", "$400"]; + const AMOUNTS_3 = ["$5"]; + const AMOUNTS_4 = ["$"]; + const AMOUNTS_5 = ["100", "200", "$300", "$400"]; + const AMOUNTS_6: string[] = []; + const AMOUNTS_7 = ["100", "???", "7", "$233", "", "$"]; + const AMOUNTS_8 = ["$one", "two", "$three"]; + + // Ensure that none of the arrays were changed mutably + // If you fail these, you aren't using map/filter/reduce/etc. properly! + afterEach(() => { + expect(AMOUNTS_1).toEqual(["$1", "$2", "$3"]); + expect(AMOUNTS_2).toEqual(["$100", "$200", "$300", "$400"]); + expect(AMOUNTS_3).toEqual(["$5"]); + expect(AMOUNTS_4).toEqual(["$"]); + expect(AMOUNTS_5).toEqual(["100", "200", "$300", "$400"]); + expect(AMOUNTS_6).toEqual([]); + expect(AMOUNTS_7).toEqual(["100", "???", "7", "$233", "", "$"]); + expect(AMOUNTS_8).toEqual(["$one", "two", "$three"]); + }); + + test("(3 pts) Testing the removeDollars function", () => { + expect(removeDollars(AMOUNTS_1)).toEqual([1, 2, 3]); + expect(removeDollars(AMOUNTS_2)).toEqual([100, 200, 300, 400]); + expect(removeDollars(AMOUNTS_3)).toEqual([5]); + expect(removeDollars(AMOUNTS_4)).toEqual([0]); + expect(removeDollars(AMOUNTS_5)).toEqual([100, 200, 300, 400]); + expect(removeDollars(AMOUNTS_6)).toEqual([]); + expect(removeDollars(AMOUNTS_7)).toEqual([100, 0, 7, 233, 0, 0]); + expect(removeDollars(AMOUNTS_8)).toEqual([0, 0, 0]); + }); + + ////////////////////////////////// + // shoutIfExclaiming + + const MESSAGE_1 = ["Hello", "you", "are", "great!"]; + const MESSAGE_2 = ["oho!", "Oho!", "oHo!", "oHO!", "OHO!"]; + const MESSAGE_3 = ["Wait?", "What?", "Lo", "How?", "High!"]; + const MESSAGE_4 = ["??????"]; + const MESSAGE_5: string[] = ["This one is very long!"]; + const MESSAGE_6 = ["No", "Caps", "here.", "Right?"]; + + // Ensure that none of the arrays were changed mutably + // If you fail these, you aren't using map/filter/reduce/etc. properly! + afterEach(() => { + expect(MESSAGE_1).toEqual(["Hello", "you", "are", "great!"]); + expect(MESSAGE_2).toEqual(["oho!", "Oho!", "oHo!", "oHO!", "OHO!"]); + expect(MESSAGE_3).toEqual(["Wait?", "What?", "Lo", "How?", "High!"]); + expect(MESSAGE_4).toEqual(["??????"]); + expect(MESSAGE_5).toEqual(["This one is very long!"]); + expect(MESSAGE_6).toEqual(["No", "Caps", "here.", "Right?"]); + }); + + test("(3 pts) Testing the shoutIfExclaiming function", () => { + expect(shoutIfExclaiming(MESSAGE_1)).toEqual([ + "Hello", + "you", + "are", + "GREAT!", + ]); + expect(shoutIfExclaiming(MESSAGE_2)).toEqual([ + "OHO!", + "OHO!", + "OHO!", + "OHO!", + "OHO!", + ]); + expect(shoutIfExclaiming(MESSAGE_3)).toEqual(["Lo", "HIGH!"]); + expect(shoutIfExclaiming(MESSAGE_4)).toEqual([]); + expect(shoutIfExclaiming(MESSAGE_5)).toEqual([ + "THIS ONE IS VERY LONG!", + ]); + expect(shoutIfExclaiming(MESSAGE_6)).toEqual(["No", "Caps", "here."]); + }); + + ////////////////////////////////// + // countShortWords + + const WORDS_1 = ["the", "cat", "in", "the", "hat"]; + const WORDS_2 = ["one", "two", "three", "four", "five", "six", "seven"]; + const WORDS_3 = ["alpha", "beta", "gamma"]; + const WORDS_4 = ["Longest", "Words", "Possible"]; + const WORDS_5: string[] = []; + const WORDS_6 = ["", "", "", ""]; + + // Ensure that none of the arrays were changed mutably + // If you fail these, you aren't using map/filter/reduce/etc. properly! + afterEach(() => { + expect(WORDS_1).toEqual(["the", "cat", "in", "the", "hat"]); + expect(WORDS_2).toEqual([ + "one", + "two", + "three", + "four", + "five", + "six", + "seven", + ]); + expect(WORDS_3).toEqual(["alpha", "beta", "gamma"]); + expect(WORDS_4).toEqual(["Longest", "Words", "Possible"]); + expect(WORDS_5).toEqual([]); + expect(WORDS_6).toEqual(["", "", "", ""]); + }); + + test("(3 pts) Testing the countShortWords function", () => { + expect(countShortWords(WORDS_1)).toEqual(5); + expect(countShortWords(WORDS_2)).toEqual(3); + expect(countShortWords(WORDS_3)).toEqual(0); + expect(countShortWords(WORDS_4)).toEqual(0); + expect(countShortWords(WORDS_5)).toEqual(0); + expect(countShortWords(WORDS_6)).toEqual(4); + }); + + ////////////////////////////////// + // allRGB + + const COLORS_1 = ["red", "green", "blue"]; + const COLORS_2 = ["red", "red", "red"]; + const COLORS_3 = ["red", "red", "blue", "blue", "green", "red"]; + const COLORS_4 = ["purple", "orange", "violet"]; + const COLORS_5 = ["red", "blue", "yellow"]; + const COLORS_6 = ["green"]; + const COLORS_7 = ["red"]; + const COLORS_8 = ["kabluey"]; + const COLORS_9: string[] = []; + + // Ensure that none of the arrays were changed mutably + // If you fail these, you aren't using map/filter/reduce/etc. properly! + afterEach(() => { + expect(COLORS_1).toEqual(["red", "green", "blue"]); + expect(COLORS_2).toEqual(["red", "red", "red"]); + expect(COLORS_3).toEqual([ + "red", + "red", + "blue", + "blue", + "green", + "red", + ]); + expect(COLORS_4).toEqual(["purple", "orange", "violet"]); + expect(COLORS_5).toEqual(["red", "blue", "yellow"]); + expect(COLORS_6).toEqual(["green"]); + expect(COLORS_7).toEqual(["red"]); + expect(COLORS_8).toEqual(["kabluey"]); + expect(COLORS_9).toEqual([]); + }); + + test("(3 pts) Testing the allRGB function", () => { + expect(allRGB(COLORS_1)).toEqual(true); + expect(allRGB(COLORS_2)).toEqual(true); + expect(allRGB(COLORS_3)).toEqual(true); + expect(allRGB(COLORS_4)).toEqual(false); + expect(allRGB(COLORS_5)).toEqual(false); + expect(allRGB(COLORS_6)).toEqual(true); + expect(allRGB(COLORS_7)).toEqual(true); + expect(allRGB(COLORS_8)).toEqual(false); + expect(allRGB(COLORS_9)).toEqual(true); + }); + + ////////////////////////////////// + // makeMath + + test("(3 pts) Testing the makeMath function", () => { + expect(makeMath(NUMBERS_1)).toEqual("6=1+2+3"); + expect(makeMath(NUMBERS_2)).toEqual("600=100+300+200"); + expect(makeMath(NUMBERS_3)).toEqual("5=5"); + expect(makeMath(NUMBERS_4)).toEqual("0=0"); + expect(makeMath(NUMBERS_7)).toEqual("1000=199+1+550+50+200"); + }); + + ////////////////////////////////// + // injectPositive + test("(3 pts) Testing the injectPositive function", () => { + expect(injectPositive(NUMBERS_1)).toEqual([1, 2, 3, 6]); + expect(injectPositive(NUMBERS_2)).toEqual([100, 300, 200, 600]); + expect(injectPositive(NUMBERS_3)).toEqual([5, 5]); + expect(injectPositive(NUMBERS_4)).toEqual([0]); + expect(injectPositive(NUMBERS_5)).toEqual([100, 199, 1, -5, 300, 7, 3]); + expect(injectPositive(NUMBERS_6)).toEqual([-100, 0, -200, 100, 200]); + expect(injectPositive(NUMBERS_7)).toEqual([199, 1, 550, 50, 200, 1000]); + }); +}); diff --git a/src/arrays.ts b/src/arrays.ts new file mode 100644 index 0000000000..d54f6902e9 --- /dev/null +++ b/src/arrays.ts @@ -0,0 +1,116 @@ +/** + * Consume an array of numbers, and return a new array containing + * JUST the first and last number. If there are no elements, return + * an empty array. If there is one element, the resulting list should + * the number twice. + */ +export function bookEndList(numbers: number[]): number[] { + if (numbers.length === 0) { + return []; + } else if (numbers.length === 1) { + return [numbers[0], numbers[0]]; + } else { + return [numbers[0], numbers[numbers.length - 1]]; + } +} + +/** + * Consume an array of numbers, and return a new array where each + * number has been tripled (multiplied by 3). + */ +export function tripleNumbers(numbers: number[]): number[] { + return numbers.map((num: number): number => num * 3); +} + +/** + * Consume an array of strings and convert them to integers. If + * the number cannot be parsed as an integer, convert it to 0 instead. + */ +export function stringsToIntegers(numbers: string[]): number[] { + return numbers.map((num: string): number => parseInt(num) || 0); +} + +/** + * Consume an array of strings and return them as numbers. Note that + * the strings MAY have "$" symbols at the beginning, in which case + * those should be removed. If the result cannot be parsed as an integer, + * convert it to 0 instead. + */ +// Remember, you can write functions as lambdas too! They work exactly the same. +export const removeDollars = (amounts: string[]): number[] => { + return amounts.map( + (amount: string): number => parseInt(amount.replace("$", "")) || 0, + ); +}; + +/** + * Consume an array of messages and return a new list of the messages. However, any + * string that ends in "!" should be made uppercase. Also, remove any strings that end + * in question marks ("?"). + */ +export const shoutIfExclaiming = (messages: string[]): string[] => { + return messages + .filter((msg: string): boolean => !msg.endsWith("?")) + .map((msg: string): string => + msg.endsWith("!") ? msg.toUpperCase() : msg, + ); +}; + +/** + * Consumes an array of words and returns the number of words that are LESS THAN + * 4 letters long. + */ +export function countShortWords(words: string[]): number { + return words.filter((word: string): boolean => word.length < 4).length; +} + +/** + * Consumes an array of colors (e.g., 'red', 'purple') and returns true if ALL + * the colors are either 'red', 'blue', or 'green'. If an empty list is given, + * then return true. + */ +export function allRGB(colors: string[]): boolean { + return colors.every( + (c: string): boolean => c === "red" || c === "blue" || c === "green", + ); +} + +/** + * Consumes an array of numbers, and produces a string representation of the + * numbers being added together along with their actual sum. + * + * For instance, the array [1, 2, 3] would become "6=1+2+3". + * And the array [] would become "0=0". + */ +export function makeMath(addends: number[]): string { + const sum = addends.reduce( + (total: number, n: number): number => total + n, + 0, + ); + const rightSide = addends.length === 0 ? "0" : addends.join("+"); + return `${sum}=${rightSide}`; +} + +/** + * Consumes an array of numbers and produces a new array of the same numbers, + * with one difference. After the FIRST negative number, insert the sum of all + * previous numbers in the list. If there are no negative numbers, then append + * the sum to the list. + * + * For instance, the array [1, 9, -5, 7] would become [1, 9, -5, 10, 7] + * And the array [1, 9, 7] would become [1, 9, 7, 17] + */ +export function injectPositive(values: number[]): number[] { + const i = values.findIndex((n: number): boolean => n < 0); + const sum = values + .slice(0, i === -1 ? values.length : i) + .reduce((total: number, n: number): number => total + n, 0); + + if (i === -1) { + return [...values, sum]; + } else { + const copy = [...values]; + copy.splice(i + 1, 0, sum); + return copy; + } +} diff --git a/src/data/questions.json b/src/data/questions.json new file mode 100644 index 0000000000..3b19537526 --- /dev/null +++ b/src/data/questions.json @@ -0,0 +1,79 @@ +{ + "BLANK_QUESTIONS": [ + { + "id": 1, + "name": "Question 1", + "body": "", + "type": "multiple_choice_question", + "options": [], + "expected": "", + "points": 1, + "published": false + }, + { + "id": 47, + "name": "My New Question", + "body": "", + "type": "multiple_choice_question", + "options": [], + "expected": "", + "points": 1, + "published": false + }, + { + "id": 2, + "name": "Question 2", + "body": "", + "type": "short_answer_question", + "options": [], + "expected": "", + "points": 1, + "published": false + } + ], + "SIMPLE_QUESTIONS": [ + { + "id": 1, + "name": "Addition", + "body": "What is 2+2?", + "type": "short_answer_question", + "options": [], + "expected": "4", + "points": 1, + "published": true + }, + { + "id": 2, + "name": "Letters", + "body": "What is the last letter of the English alphabet?", + "type": "short_answer_question", + "options": [], + "expected": "Z", + "points": 1, + "published": false + }, + { + "id": 5, + "name": "Colors", + "body": "Which of these is a color?", + "type": "multiple_choice_question", + "options": ["red", "apple", "firetruck"], + "expected": "red", + "points": 1, + "published": true + }, + { + "id": 9, + "name": "Shapes", + "body": "What shape can you make with one line?", + "type": "multiple_choice_question", + "options": ["square", "triangle", "circle"], + "expected": "circle", + "points": 2, + "published": false + } + ], + "SIMPLE_QUESTIONS_2": [], + "EMPTY_QUESTIONS": [], + "TRIVIA_QUESTIONS": [] +} diff --git a/src/interfaces/question.ts b/src/interfaces/question.ts new file mode 100644 index 0000000000..a39431565e --- /dev/null +++ b/src/interfaces/question.ts @@ -0,0 +1,21 @@ +/** QuestionType influences how a question is asked and what kinds of answers are possible */ +export type QuestionType = "multiple_choice_question" | "short_answer_question"; + +export interface Question { + /** A unique identifier for the question */ + id: number; + /** The human-friendly title of the question */ + name: string; + /** The instructions and content of the Question */ + body: string; + /** The kind of Question; influences how the user answers and what options are displayed */ + type: QuestionType; + /** The possible answers for a Question (for Multiple Choice questions) */ + options: string[]; + /** The actually correct answer expected */ + expected: string; + /** How many points this question is worth, roughly indicating its importance and difficulty */ + points: number; + /** Whether or not this question is ready to display to students */ + published: boolean; +} diff --git a/src/objects.test.ts b/src/objects.test.ts new file mode 100644 index 0000000000..4d3117405d --- /dev/null +++ b/src/objects.test.ts @@ -0,0 +1,299 @@ +import { Question } from "./interfaces/question"; +import { + makeBlankQuestion, + isCorrect, + isValid, + toShortForm, + toMarkdown, + duplicateQuestion, + renameQuestion, + publishQuestion, + addOption, + mergeQuestion, +} from "./objects"; +import testQuestionData from "./data/questions.json"; +import backupQuestionData from "./data/questions.json"; + +//////////////////////////////////////////// +// Setting up the test data + +const { BLANK_QUESTIONS, SIMPLE_QUESTIONS }: Record