Extract the route related code to new class Router and add UT.

unittest/router_unittest.cc

@@ -0,0 +1,77 @@
+#include "gtest/gtest.h"
+
+#include "webcc/router.h"
+#include "webcc/response_builder.h"
+
+// -----------------------------------------------------------------------------
+
+class MyView : public webcc::View {
+public:
+  webcc::ResponsePtr Handle(webcc::RequestPtr request) override {
+    return webcc::ResponseBuilder{}.OK()();
+  }
+};
+
+// -----------------------------------------------------------------------------
+
+TEST(RouterTest, URL_RegexBasic) {
+  webcc::Router router;
+
+  router.Route(webcc::R("/instance/(\\d+)"),
+               std::make_shared<MyView>());
+
+  std::string url = "/instance/12345";
+  webcc::UrlArgs args;
+
+  webcc::ViewPtr view = router.FindView("GET", url, &args);
+
+  EXPECT_TRUE(!!view);
+
+  EXPECT_EQ(1, args.size());
+  EXPECT_EQ("12345", args[0]);
+
+  url = "/instance/abcde";
+  args.clear();
+  view = router.FindView("GET", url, &args);
+
+  EXPECT_TRUE(!view);
+}
+
+TEST(RouterTest, URL_RegexMultiple) {
+  webcc::Router router;
+
+  router.Route(webcc::R("/study/(\\d+)/series/(\\d+)/instance/(\\d+)"),
+               std::make_shared<MyView>());
+
+  std::string url = "/study/1/series/2/instance/3";
+  webcc::UrlArgs args;
+
+  webcc::ViewPtr view = router.FindView("GET", url, &args);
+
+  EXPECT_TRUE(!!view);
+
+  EXPECT_EQ(3, args.size());
+  EXPECT_EQ("1", args[0]);
+  EXPECT_EQ("2", args[1]);
+  EXPECT_EQ("3", args[2]);
+
+  url = "/study/a/series/b/instance/c";
+  args.clear();
+  view = router.FindView("GET", url, &args);
+
+  EXPECT_TRUE(!view);
+}
+
+TEST(RouterTest, URL_NonRegex) {
+  webcc::Router router;
+
+  router.Route("/instances", std::make_shared<MyView>());
+
+  std::string url = "/instances";
+  webcc::UrlArgs args;
+
+  webcc::ViewPtr view = router.FindView("GET", url, &args);
+
+  EXPECT_TRUE(!!view);
+  EXPECT_TRUE(args.empty());
+}