Implement Gherkin scenarios for UUID and UUri serialization

The unit tests for verifying UUID and UUri serialization have been
refactired into Cucumber based integration tests that implement the
corresponding Gherkin based UUID and UUri scenarios from up-spec.

Author: sophokles73

.env.oft-current

@@ -17,7 +17,7 @@ UP_SPEC_FILE_PATTERNS="up-spec/*.adoc up-spec/*.md up-spec/basics up-spec/up-l1/
 
 # The file patterns that specify this component's resources which contain specification items
 # that cover the requirements
-COMPONENT_FILE_PATTERNS="*.adoc *.md *.rs .github examples src tests tools"
+COMPONENT_FILE_PATTERNS="*.adoc *.md *.rs *.feature .github examples src tests tools"
 
 OFT_FILE_PATTERNS="$UP_SPEC_FILE_PATTERNS $COMPONENT_FILE_PATTERNS"
 OFT_TAGS="_,LanguageLibrary"

.env.oft-latest

@@ -17,7 +17,7 @@ UP_SPEC_FILE_PATTERNS="up-spec/*.adoc up-spec/*.md up-spec/basics up-spec/up-l1/
 
 # The file patterns that specify this component's resources which contain specification items
 # that cover the requirements
-COMPONENT_FILE_PATTERNS="*.adoc *.md *.rs .github examples src tests tools"
+COMPONENT_FILE_PATTERNS="*.adoc *.md *.rs *.feature .github examples src tests tools"
 
 OFT_FILE_PATTERNS="$UP_SPEC_FILE_PATTERNS $COMPONENT_FILE_PATTERNS"
 OFT_TAGS="_,LanguageLibrary"

.github/workflows/check.yaml

@@ -22,7 +22,9 @@ on:
       - main
   pull_request:
     paths:
+      - "examples/**"
       - "src/**"
+      - "tests/**"
       - "Cargo.*"
       - "build.rs"
       - "deny.toml"
@@ -134,13 +136,11 @@ jobs:
           cargo hack check --feature-powerset --no-dev-deps
 
   # [impl->req~up-language-ci-test~1]
-  nextest:
+  test:
     # Subset of feature-combos, on only one OS - more complete testing in test-featurematrix.yaml
     outputs:
       test_results_url: ${{ steps.test_results.outputs.artifact-url }}
     runs-on: ubuntu-latest
-    env: 
-      NEXTEST_EXPERIMENTAL_LIBTEST_JSON: 1
     strategy:
       matrix:
         feature-flags: ["", "--no-default-features", "--all-features"]
@@ -151,28 +151,24 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with: 
           toolchain: ${{ env.RUST_TOOLCHAIN }}
-      - uses: Swatinem/rust-cache@v2
-      # install tool to convert cargo's JSON test output to JUNIT format
-      - run: |
-          cargo install cargo2junit
-      # Using nextest because it's faster than built-in test
-      - uses: taiki-e/install-action@nextest
-      - name: Run cargo nextest
+
+      - name: Run lib tests
+        run: |
+          mkdir -p ${GITHUB_WORKSPACE}/target
+          RUSTC_BOOTSTRAP=1 cargo test --no-fail-fast --lib ${{ matrix.feature-flags }} -- -Z unstable-options --format junit --report-time > ${GITHUB_WORKSPACE}/target/lib-test-results.xml
+      - name: Run doc tests
         run: |
-          cargo nextest run ${{ matrix.feature-flags }} --profile ci
-      - name: Run doctests
+          RUSTC_BOOTSTRAP=1 cargo test --no-fail-fast --doc ${{ matrix.feature-flags }} -- -Z unstable-options --format junit --report-time > ${GITHUB_WORKSPACE}/target/doc-test-results.xml
+      - name: Run TCK tests
         run: |
-          # we use tee to let cargo test print to the console
-          RUSTC_BOOTSTRAP=1 cargo test --doc ${{ matrix.feature-flags }} -- -Z unstable-options --format json --report-time | tee target/doctest-results.json
-          # write output to same directory as the one used by cargo nextest in order
-          # to flatten the directory hierarchy when uploading the test results
-          cat target/doctest-results.json | cargo2junit > target/nextest/ci/doctest-results.xml
+          # the Cucumber based tests write a results file in JUnit format to "tck-[test_name]-results.xml"
+          cargo test --no-fail-fast --test 'tck_*' ${{ matrix.feature-flags }} -- --junit-out-folder=${GITHUB_WORKSPACE}/target
 
       - name: Upload all-features test results artifact
         id: test_results
         if: matrix.feature-flags == '--all-features'
         uses: actions/upload-artifact@v4
         with:
           name: test-results
-          # this will include the nextest and doctest result files in the archive's root folder
-          path: target/nextest/ci/*-results.xml
+          # include all test result files
+          path: target/*-results.xml