zigzag/.github/workflows/parity.yml at main · Bloechle/zigzag · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
name: parity

# The three ports must stay bit-identical; tools/parity.py is the proof.
# It caught a real divergence once (Java decoded grayscale images through a
# linear-gray colour space), so it runs on every change to a port.

on:
  push:
    paths: ['ports/**', 'js/**', 'tools/**', '.github/workflows/parity.yml']
  pull_request:
    paths: ['ports/**', 'js/**', 'tools/**', '.github/workflows/parity.yml']
  workflow_dispatch:

jobs:
  parity:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        java: [11, 21]   # the README promises Java 11+; 21 is the current LTS
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: '3.12'

      - uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: ${{ matrix.java }}

      - uses: actions/setup-node@v4
        with:
          node-version: '20'

      - run: pip install numpy opencv-python-headless

      - name: Python, Java and JS must agree pixel for pixel
        run: python tools/parity.py