ref(ci): Use a single CI workflow for tests

This is an initial implementation to solve the re-building of our Docker image, which is being built multiple times by our Github Actions.

This is meant to fix -> devops: Build CI Docker runs twice for every PR #7816

.github/workflows/ci-tests.patch-external.yml

@@ -0,0 +1,132 @@
+# Workflow patches for skipping CI tests on PRs from external repositories
+name: Run tests
+
+# Run on PRs from external repositories, let them pass, and then Mergify will check them.
+# GitHub doesn't support filtering workflows by source branch names, so we have to do it for each
+# job.
+on:
+  pull_request:
+
+#! IMPORTANT
+#!
+#! The job names in `sub-ci-unit-tests-docker.yml`, `sub-ci-integration-tests-gcp.yml`,
+#! `ci-tests.patch.yml` and `ci-tests.patch-external.yml` must be kept in sync.
+jobs:
+  build:
+    name: Run tests / Build CI Docker / Build images
+    # Only run on PRs from external repositories.
+    if: ${{ startsWith(github.event_name, 'pull') && github.event.pull_request.head.repo.fork }}
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  ####
+  ## The following jobs are related to sub-ci-unit-tests-docker.yml
+  ###
+  test-all:
+    name: Run tests / Test all
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  test-fake-activation-heights:
+    name: Run tests / Test with fake activation heights
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  test-empty-sync:
+    name: Run tests / Test checkpoint sync from empty state
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  test-lightwalletd-integration:
+    name: Run tests / Test integration with lightwalletd
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  test-configuration-file:
+    name: Run tests / Test CI default Docker config file / Test default-conf in Docker
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  test-zebra-conf-path:
+    name: Run tests / Test CI custom Docker config file / Test custom-conf in Docker
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+
+  ####
+  ## The following jobs are related to sub-ci-intgration-tests-gcp.yml
+  ###
+
+  # We don't patch the testnet job, because testnet isn't required to merge (it's too unstable)
+  get-available-disks:
+    name: Run tests / Check if cached state disks exist for Mainnet / Check if cached state disks exist
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  test-stateful-sync:
+    name: Run tests / Zebra checkpoint update / Run sync-past-checkpoint test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  test-update-sync:
+    name: Run tests / Zebra tip update / Run update-to-tip test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  checkpoints-mainnet:
+    name: Run tests / Generate checkpoints mainnet / Run checkpoints-mainnet test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  lightwalletd-rpc-test:
+    name: Run tests / Zebra tip JSON-RPC / Run fully-synced-rpc test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  lightwalletd-transactions-test:
+    name: Run tests / lightwalletd tip send / Run lwd-send-transactions test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  get-block-template-test:
+    name: Run tests / get block template / Run get-block-template test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  submit-block-test:
+    name: Run tests / submit block / Run submit-block test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  lightwalletd-full-sync:
+    name: Run tests / lightwalletd tip / Run lwd-full-sync test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  lightwalletd-update-sync:
+    name: Run tests / lightwalletd tip update / Run lwd-update-sync test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'
+
+  lightwalletd-grpc-test:
+    name: Run tests / lightwalletd GRPC tests / Run lwd-grpc-wallet test
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required"'