Unified tests into final step ✅ (#192)

Unified all the tests into having one final step at the end.

<img width="803" alt="image"
src="https://github.com/polkadot-fellows/runtimes/assets/8524599/5269a2c1-eae0-481c-b13c-d5b9e2957bbf">

This step will only run if all the previous steps have ran. If any of
these tests fail, it will fail.

All the status checks will still appear in the PR, so the user can see
any failed case:
<img width="855" alt="image"
src="https://github.com/polkadot-fellows/runtimes/assets/8524599/2b5e6f9c-5304-4bc8-b7b9-15d99df0d07d">

But, by adding this last test as the only requirement, the list to block
the branch becomes significantly smaller.

- [x] Does not require a CHANGELOG entry

---------

Co-authored-by: Bastian Köcher <git@kchr.de>

.github/workflows/check-migrations.yml

@@ -1,5 +1,8 @@
 name: Check Migrations
 
+# If you modify more jobs, ensure that you add them as required to the job "confirmMigrationsPassed"
+# which is located at the end of this file (more info in the job)
+
 on:
   push:
     branches: ["main", "release-*"]
@@ -16,6 +19,7 @@ concurrency:
 permissions: {}
 
 jobs:
+  # This generates a matrix with all the required jobs which will be run in the next step
   runtime-matrix:
     runs-on: ubuntu-latest
     outputs:
@@ -36,6 +40,8 @@ jobs:
           TASKS=$(echo $TASKS | jq -c .)
           echo "runtime=$TASKS" >> $GITHUB_OUTPUT
 
+  # This runs all the jobs in the matrix. It is required by the "confirmMigrationsPassed" job, so
+  # if they all pass, that job will pass too.
   check-migrations:
     needs: [runtime-matrix]
     continue-on-error: true
@@ -77,3 +83,15 @@ jobs:
           node-uri: ${{ matrix.runtime.uri }}
           checks: "pre-and-post"
           extra-args: ${{ env.EXTRA_ARGS }}
+
+  # This will only run if all the tests in its "needs" array passed.
+  # Add this as your required job, becuase if the matrix changes size (new things get added)
+  # it will still require all the steps to succeed.
+  # If you add more jobs, remember to add them to the "needs" array.
+  confirmMigrationsPassed:
+    runs-on: ubuntu-latest
+    name: All migrations passed
+    # If any new job gets added, be sure to add it to this array
+    needs: [check-migrations]
+    steps:
+      - run: echo '### Good job! All the migrations passed 🚀' >> $GITHUB_STEP_SUMMARY

.github/workflows/test.yml

@@ -1,5 +1,8 @@
 name: "Test all features"
 
+# If you modify more test jobs, ensure that you add them as required to the job "confirmTestPassed"
+# which is located at the end of this file (more info in the job)
+
 on:
   push:
     branches: ["main", "release-*"]
@@ -12,6 +15,7 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  # This generates a matrix with all the required jobs which will be run in the next step
   runtime-matrix:
     runs-on: ubuntu-latest
     outputs:
@@ -38,6 +42,7 @@ jobs:
           echo $TASKS
           echo "itest=$TASKS" >> $GITHUB_OUTPUT
 
+  # Job required by "confirmTestPassed"
   runtime-test:
     needs: [runtime-matrix]
     continue-on-error: true
@@ -94,6 +99,7 @@ jobs:
           RUSTFLAGS: "-C debug-assertions -D warnings"
           SKIP_WASM_BUILD: 1
 
+  # Job required by "confirmTestPassed"
   integration-test:
     needs: [integration-test-matrix]
     continue-on-error: true
@@ -144,6 +150,7 @@ jobs:
         env:
           RUSTFLAGS: "-C debug-assertions -D warnings"
 
+  # Job required by "confirmTestPassed"
   build-chain-spec-generator:
     runs-on: ubuntu-latest
     steps:
@@ -190,6 +197,7 @@ jobs:
           RUSTFLAGS: "-C debug-assertions -D warnings"
           SKIP_WASM_BUILD: 1
 
+  # Job required by "confirmTestPassed"
   zombienet-smoke:
     needs: [build-chain-spec-generator]
     runs-on: ubuntu-latest
@@ -240,3 +248,19 @@ jobs:
         run: |
           export PATH=$(pwd)/target/release:$PATH
           cargo test --manifest-path integration-tests/zombienet/Cargo.toml
+
+  # This will only run if all the tests in its "needs" array passed.
+  # Add this as your required job, becuase if the matrix changes size (new things get added)
+  # it will still require all the steps to succeed.
+  # If you add more jobs, remember to add them to the "needs" array.
+  confirmTestPassed:
+    runs-on: ubuntu-latest
+    name: All tests passed
+    # If any new job gets added, be sure to add it to this list
+    needs:
+      - runtime-test
+      - integration-test
+      - build-chain-spec-generator
+      - zombienet-smoke
+    steps:
+      - run: echo '### Good job! All the tests passed 🚀' >> $GITHUB_STEP_SUMMARY