Fix DEFAULT_ATTRIBUTION value and add tests (#360)

The value for `DEFAULT_ATTRIBUTION` in `includes/mod_tile.h` needed to be escaped, it was causing a JSON parsing failure.
* Added basic test for `/.../.../tile-layer.json` to ensure parsing is successful
* Added basic tests for `/metrics` & `/mod_tile` URLs

.github/actions/dependencies/install/action.yml

@@ -31,6 +31,7 @@ inputs:
   debian-test-dependencies:
     default: >-
       apache2
+      jq
   fedora-build-dependencies:
     default: >-
       cairo-devel
@@ -45,6 +46,7 @@ inputs:
   fedora-test-dependencies:
     default: >-
       httpd
+      jq
   freebsd-build-dependencies:
     default: >-
       apache24
@@ -56,6 +58,9 @@ inputs:
       libmemcached
       mapnik
       pkgconf
+  freebsd-test-dependencies:
+    default: >-
+      jq
   macos-build-dependencies:
     default: >-
       apr
@@ -70,6 +75,7 @@ inputs:
   macos-test-dependencies:
     default: >-
       coreutils
+      jq
   opensuse-build-dependencies:
     default: >-
       apache2-devel
@@ -85,6 +91,7 @@ inputs:
       apache2
       apache2-event
       apache2-prefork
+      jq
   opensuse-mapnik-build-dependencies:
     default: >-
       bzip2
@@ -121,6 +128,7 @@ inputs:
   rhel-test-dependencies:
     default: >-
       httpd
+      jq
   rhel-mapnik-build-dependencies:
     default: >-
       boost-devel
@@ -172,6 +180,7 @@ inputs:
   ubuntu-test-dependencies:
     default: >-
       apache2
+      jq
   mapnik-build-version-centos-stream:
     default: 3.1.0
   mapnik-build-version-amazonlinux2-centos7:
@@ -224,6 +233,7 @@ runs:
       with:
         packages: >-
           ${{ inputs.freebsd-build-dependencies }}
+          ${{ inputs.freebsd-test-dependencies }}
           ${{ matrix.build_system == 'CMake' && 'cmake' || 'autoconf automake' }}
           ${{ matrix.compiler == 'GNU' && 'gcc' || 'llvm' }}
       if: github.job == 'FreeBSD'

.github/actions/dependencies/install/brew/action.yml

@@ -8,5 +8,5 @@ runs:
   using: composite
   steps:
     - name: Install package(s)
-      run: brew install ${{ inputs.packages }}
+      run: brew install ${{ inputs.packages }} || true
       shell: bash --noprofile --norc -euxo pipefail {0}