This is day 4 of the Advent of Code 2017. If you want to read about the puzzles, start with Day 1. As I worked through the puzzles, I decided that I should be testing using their test sets and solving the issues that way. This lets me use the sample data, but also add in my own sets to cover strange situations.
Here are the tests that I used for each part of day 4.
Part I
This is a fairly simple test. I’m returning a result set since the solution is a single query, but this is really a scalar. In this cas,e I’ll create a one row, one column expected table and then get the results from my solution (inside a proc) and insert into Actual.
The rest is standard tSQLt testing framework. Fake a table, enter data.
CREATE OR ALTER PROCEDURE tDay4.[test Day4a sample data] AS BEGIN -- Assemble EXEC tsqlt.FakeTable @TableName = N'Day4'; INSERT dbo.Day4 ( passphrase ) -- SQL Prompt formatting off VALUES ('aa bb cc dd ee' ) , ('aa bb cc dd aa') , ('aa bb cc dd aaa') -- SQL Prompt formatting on CREATE TABLE #Expected (valid INT); INSERT #Expected ( valid) VALUES (1 ); SELECT * INTO #actual FROM #Expected AS e WHERE 1 = 0; -- Act INSERT #actual EXEC dbo.Day4_a; -- Assert EXEC tsqlt.AssertEqualsTable @Expected = N'#Expected' , @Actual = N'#Actual' , @Message = N'Incorrect number of valid passphrases'; END GO EXEC tsqlt.run 'tDay4.[test Day4a sample data]';
Part II
This is the same as part I, but I change the inputs and results.
CREATE OR ALTER PROCEDURE tDay4.[test Day4b sample data] AS BEGIN -- Assemble EXEC tsqlt.FakeTable @TableName = N'Day4'; INSERT dbo.Day4 ( passphrase ) -- SQL Prompt formatting off VALUES ('abcde fghij' ) , ('abcde xyz ecdab') , ('a ab abc abd abf abj') , ('iiii oiii ooii oooi oooo') , ('oiii ioii iioi iiio') -- SQL Prompt formatting on CREATE TABLE #Expected (valid INT); INSERT #Expected ( valid) VALUES (3 ); SELECT * INTO #actual FROM #Expected AS e WHERE 1 = 0; -- Act INSERT #actual EXEC dbo.Day4_b; -- Assert EXEC tsqlt.AssertEqualsTable @Expected = N'#Expected' , @Actual = N'#Actual' , @Message = N'Incorrect number of valid passphrases'; END GO EXEC tsqlt.run 'tDay4.[test Day4b sample data]';