ci: add ech-test coverage to main CI

.github/workflows/test.yaml

@@ -127,7 +127,13 @@ jobs:
         if: runner.os == 'Linux' # For 'nm'
         run: |
           ! nm build/tests/client | grep '__asan_init' 
-          ! nm build/tests/server | grep '__asan_init' 
+          ! nm build/tests/server | grep '__asan_init'
+
+      - name: Run ECH connect test
+        if: matrix.crypto == 'aws-lc-rs' # No HPKE in ring
+        run: |
+          cmake --build build --target ech-test > ech-test.log
+          grep 'sni=encrypted' ech-test.log
 
       # Our integration tests rely on a built-in provider being enabled.
       # Double-check the library/unit tests work without any providers to
@@ -244,6 +250,12 @@ jobs:
       - name: Integration test
         run: cmake --build build --config "${{matrix.config}}" --target integration-test
 
+      - name: Run ECH connect test
+        if: matrix.crypto == 'aws-lc-rs' # No HPKE in ring
+        run: |
+          cmake --build build --target ech-test > ech-test.log
+          grep 'sni=encrypted' ech-test.log
+
   ensure-header-updated:
     runs-on: ubuntu-latest
     defaults: