DailyRNG

Testing & Debugging

Testing & Debugging

Every lesson in order, step by step. No difficulty tiers. Just follow the arrows.

15 lessons, about 25 min of reading

1

A test is a checkable sentence →

Step 1 · Basic

2

Your first real test file →

Step 2 · Basic

3

What to assert on →

Step 3 · Basic

4

Reading the runner output →

Step 4 · Basic

5

Debugging from a failure →

Step 5 · Basic

6

Prints you can trust →

Step 6 · Basic

7

Stepping with a debugger →

Step 7 · Basic

8

One test, many cases →

Step 8 · Advanced

9

Choosing the hard cases →

Step 9 · Advanced

10

Setting up state for a test →

Step 10 · Advanced

11

Locking a fix in place →

Step 11 · Advanced

12

Reading a stack trace →

Step 12 · Advanced

13

Testing the rule, not the table →

Step 13 · Master

14

Testing the seam, not the world →

Step 14 · Master

15

Running the suite on every change →

Step 15 · Master