test cases: add test case for dub

test cases/d/11 dub/meson.build

@@ -0,0 +1,23 @@
+project('dub-example', 'd')
+
+dub_exe = find_program('dub', required : false)
+if not dub_exe.found()
+  error('MESON_SKIP_TEST: Dub not found')
+endif
+
+urld_dep = dependency('urld', method: 'dub')
+
+test_exe = executable('test-urld', 'test.d', dependencies: urld_dep)
+test('test urld', test_exe)
+
+# If you want meson to generate/update a dub.json file
+dlang = import('dlang')
+dlang.generate_dub_file(meson.project_name().to_lower(), meson.source_root(),
+                        authors: 'Meson Team',
+                        description: 'Test executable',
+                        copyright: 'Copyright © 2018, Meson Team',
+                        license: 'MIT',
+                        sourceFiles: 'test.d',
+                        targetType: 'executable',
+                        dependencies: urld_dep
+)

test cases/d/11 dub/test.d

@@ -0,0 +1,14 @@
+import std.stdio;
+import url;
+
+void main() {
+    URL url;
+    with (url) {
+        scheme = "soap.beep";
+        host = "beep.example.net";
+        port = 1772;
+        path = "/serverinfo/info";
+    queryParams.add("token", "my-api-token");
+    }
+    writeln(url);
+}