Add coverage for app tests

Author: padelsbach

.github/workflows/code-coverage.yml

@@ -46,7 +46,7 @@ jobs:
   coverage:
     name: Coverage
     runs-on: ubuntu-latest
-    timeout-minutes: 30
+    timeout-minutes: 45
     needs: build_wolfssl
     steps:
       - name: Checkout wolfSSH
@@ -87,20 +87,37 @@ jobs:
           LLVM_PROFILE_FILE="$PWD/prof/%p-%m.profraw" \
             timeout -k 30 1200 make check
 
+      # 'make check' does not execute wolfsshd, so run it separately
+      - name: Run wolfSSHd tests
+        working-directory: ./apps/wolfsshd/test
+        run: |
+          prof="$GITHUB_WORKSPACE/prof/%p-%m.profraw"
+          sudo LLVM_PROFILE_FILE="$prof" SSHD_ENV="LLVM_PROFILE_FILE=$prof" \
+            ./run_all_sshd_tests.sh
+          sudo chown -R "$(id -u):$(id -g)" "$GITHUB_WORKSPACE/prof"
+
       - name: Report coverage
         run: |
           llvm-profdata-18 merge -sparse prof/*.profraw -o wolfssh.profdata
           # llvm-cov takes one binary positionally and the rest via -object.
-          # Tests linking the shared library are libtool wrapper scripts, so
-          # take the real binary from .libs when one is there.
+          # Programs linking the shared library are libtool wrapper scripts, so
+          # take the real binary from .libs when one is there. The apps are
+          # optional, so skip whatever this configuration did not build.
           first=""
           args=()
-          for t in tests/*.test; do
-            real="tests/.libs/$(basename "$t")"
+          for t in tests/*.test apps/wolfssh/wolfssh apps/wolfsshd/wolfsshd \
+                   apps/wolfsshd/test/test_configuration; do
+            [ -e "$t" ] || continue
+            real="$(dirname "$t")/.libs/$(basename "$t")"
             [ -x "$real" ] || real="$t"
-            if [ -z "$first" ]; then first="$real"; else args+=(-object "$real"); fi
+            if [ -z "$first" ]; then
+              first="$real"
+            else
+              args+=(-object "$real")
+            fi
           done
-          ignore='(tests|examples|apps)/.*|.*/include/wolfssl/.*|.*/wolfssh/.*\.h'
+          ignore='(tests|examples)/.*|apps/wolfsshd/test/.*'
+          ignore="$ignore"'|.*/include/wolfssl/.*|.*/wolfssh/.*\.h'
           llvm-cov-18 report "$first" "${args[@]}" \
             -instr-profile=wolfssh.profdata \
             --show-mcdc-summary \