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Acronym: add new practice exercise (#102)
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‎config.json

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"prerequisites": [],
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"difficulty": 7
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},
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{
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"slug": "acronym",
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"name": "Acronym",
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"uuid": "880388be-1e77-4092-bcf3-f237572c40e1",
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"practices": [],
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"prerequisites": [],
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"difficulty": 8
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},
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{
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"slug": "armstrong-numbers",
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"name": "Armstrong Numbers",

‎exercises/practice/acronym/.docs/instructions.md

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# Instructions
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Convert a phrase to its acronym.
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Techies love their TLA (Three Letter Acronyms)!
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Help generate some jargon by writing a program that converts a long name like Portable Network Graphics to its acronym (PNG).
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Punctuation is handled as follows: hyphens are word separators (like whitespace); all other punctuation can be removed from the input.
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For example:
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| Input | Output |
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| ------------------------- | ------ |
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| As Soon As Possible | ASAP |
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| Liquid-crystal display | LCD |
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| Thank George It's Friday! | TGIF |

‎exercises/practice/acronym/.meta/config.json

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{
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"authors": [
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"jimmytty"
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],
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"files": {
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"solution": [
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"acronym.sql"
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],
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"test": [
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"acronym_test.sql"
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],
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"example": [
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".meta/example.sql"
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]
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},
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"blurb": "Convert a long phrase to its acronym.",
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"source": "Julien Vanier",
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"source_url": "https://github.com/monkbroc"
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}

‎exercises/practice/acronym/.meta/example.sql

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UPDATE acronym
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SET result = (
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WITH RECURSIVE
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rcte(string, abbr) AS (
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VALUES(' ' || phrase, '')
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UNION ALL
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SELECT
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SUBSTR(string,2),
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abbr ||
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CASE
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WHEN GLOB('[ _-]', SUBSTR(string, 1, 1))
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AND GLOB('[A-Za-z]', SUBSTR(string, 2, 1))
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THEN SUBSTR(string, 2, 1)
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ELSE ''
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END
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FROM rcte
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WHERE string GLOB '*[ _-]*'
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)
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SELECT UPPER(abbr) FROM rcte WHERE string NOT GLOB '*[ _-]*'
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);

‎exercises/practice/acronym/.meta/tests.toml

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# This is an auto-generated file.
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#
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# Regenerating this file via `configlet sync` will:
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# - Recreate every `description` key/value pair
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# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
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# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
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# - Preserve any other key/value pair
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#
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# As user-added comments (using the # character) will be removed when this file
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# is regenerated, comments can be added via a `comment` key.
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[1e22cceb-c5e4-4562-9afe-aef07ad1eaf4]
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description = "basic"
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[79ae3889-a5c0-4b01-baf0-232d31180c08]
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description = "lowercase words"
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[ec7000a7-3931-4a17-890e-33ca2073a548]
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description = "punctuation"
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[32dd261c-0c92-469a-9c5c-b192e94a63b0]
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description = "all caps word"
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[ae2ac9fa-a606-4d05-8244-3bcc4659c1d4]
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description = "punctuation without whitespace"
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[0e4b1e7c-1a6d-48fb-81a7-bf65eb9e69f9]
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description = "very long abbreviation"
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[6a078f49-c68d-4b7b-89af-33a1a98c28cc]
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description = "consecutive delimiters"
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[5118b4b1-4572-434c-8d57-5b762e57973e]
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description = "apostrophes"
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[adc12eab-ec2d-414f-b48c-66a4fc06cdef]
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description = "underscore emphasis"

‎exercises/practice/acronym/acronym.sql

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-- Schema: CREATE TABLE acronym ( phrase TEXT PRIMARY KEY, result TEXT );
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-- Task: update the acronym table and set the result based on the phrase.

‎exercises/practice/acronym/acronym_test.sql

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-- Create database:
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.read ./create_fixture.sql
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-- Read user student solution and save any output as markdown in user_output.md:
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.mode markdown
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.output user_output.md
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.read ./acronym.sql
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.output
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-- Create a clean testing environment:
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.read ./create_test_table.sql
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-- Comparison of user input and the tests updates the status for each test:
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UPDATE tests
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SET status = 'pass'
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FROM (SELECT phrase, result FROM acronym) AS actual
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WHERE (actual.phrase, actual.result) = (tests.phrase, tests.expected);
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-- Update message for failed tests to give helpful information:
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UPDATE tests
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SET message = (
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'Result for "'
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|| tests.phrase
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|| '"'
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|| ' is <' || COALESCE(actual.result, 'NULL')
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|| '> but should be <' || tests.expected || '>'
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)
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FROM (SELECT phrase, result FROM acronym) AS actual
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WHERE actual.phrase = tests.phrase AND tests.status = 'fail';
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-- Save results to ./output.json (needed by the online test-runner)
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.mode json
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.once './output.json'
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SELECT description, status, message, output, test_code, task_id
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FROM tests;
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-- Display test results in readable form for the student:
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.mode table
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SELECT description, status, message
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FROM tests;

‎exercises/practice/acronym/create_fixture.sql

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DROP TABLE IF EXISTS acronym;
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CREATE TABLE acronym (
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phrase TEXT PRIMARY KEY,
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result TEXT
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);
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.mode csv
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.import ./data.csv acronym

‎exercises/practice/acronym/create_test_table.sql

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DROP TABLE IF EXISTS tests;
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CREATE TABLE IF NOT EXISTS tests (
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-- uuid and description are taken from the test.toml file
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uuid TEXT PRIMARY KEY,
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description TEXT NOT NULL,
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-- The following section is needed by the online test-runner
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status TEXT DEFAULT 'fail',
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message TEXT,
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output TEXT,
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test_code TEXT,
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task_id INTEGER DEFAULT NULL,
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-- Here are columns for the actual tests
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phrase TEXT NOT NULL,
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expected TEXT NOT NULL
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);
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INSERT INTO tests (uuid, description, phrase, expected)
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VALUES
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('1e22cceb-c5e4-4562-9afe-aef07ad1eaf4','basic','Portable Network Graphics','PNG'),
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('79ae3889-a5c0-4b01-baf0-232d31180c08','lowercase words','Ruby on Rails','ROR'),
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('ec7000a7-3931-4a17-890e-33ca2073a548','punctuation','First In, First Out','FIFO'),
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('32dd261c-0c92-469a-9c5c-b192e94a63b0','all caps word','GNU Image Manipulation Program','GIMP'),
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('ae2ac9fa-a606-4d05-8244-3bcc4659c1d4','punctuation without whitespace','Complementary metal-oxide semiconductor','CMOS'),
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('0e4b1e7c-1a6d-48fb-81a7-bf65eb9e69f9','very long abbreviation','Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me','ROTFLSHTMDCOALM'),
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('6a078f49-c68d-4b7b-89af-33a1a98c28cc','consecutive delimiters','Something - I made up from thin air','SIMUFTA'),
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('5118b4b1-4572-434c-8d57-5b762e57973e','apostrophes','Halley''s Comet','HC'),
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('adc12eab-ec2d-414f-b48c-66a4fc06cdef','underscore emphasis','The Road _Not_ Taken','TRNT');

‎exercises/practice/acronym/data.csv

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"Portable Network Graphics",""
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"Ruby on Rails",""
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"First In, First Out",""
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"GNU Image Manipulation Program",""
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"Complementary metal-oxide semiconductor",""
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"Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me",""
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"Something - I made up from thin air",""
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"Halley's Comet",""
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"The Road _Not_ Taken",""

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