add route tests

Signed-off-by: Mohammed Al Sahaf <msaa1990@gmail.com>

caddytest/spec/http/route/spec.hurl

@@ -0,0 +1,171 @@
+# Configure Caddy with route directive
+POST http://localhost:2019/load
+Content-Type: text/caddyfile
+```
+{
+	skip_install_trust
+	http_port     9080
+	https_port    9443
+	local_certs
+}
+localhost {
+	route /api/* {
+		uri strip_prefix /api
+		respond "API: {uri}"
+	}
+	respond "Not API"
+}
+```
+
+# route groups handlers and maintains order
+GET https://localhost:9443/api/users
+[Options]
+insecure: true
+HTTP 200
+[Asserts]
+body == "API: /users"
+
+
+# route doesn't match non-matching paths
+GET https://localhost:9443/other
+[Options]
+insecure: true
+HTTP 200
+[Asserts]
+body == "Not API"
+
+
+# Configure Caddy with nested routes
+POST http://localhost:2019/load
+Content-Type: text/caddyfile
+```
+{
+	skip_install_trust
+	http_port     9080
+	https_port    9443
+	local_certs
+}
+localhost {
+	route /api/* {
+		uri strip_prefix /api
+		route /v1/* {
+			uri strip_prefix /v1
+			respond "API v1: {uri}"
+		}
+		respond "API: {uri}"
+	}
+}
+```
+
+# nested routes process sequentially
+GET https://localhost:9443/api/v1/users
+[Options]
+insecure: true
+HTTP 200
+[Asserts]
+body == "API v1: /users"
+
+
+# outer route processes when inner doesn't match
+GET https://localhost:9443/api/users
+[Options]
+insecure: true
+HTTP 200
+[Asserts]
+body == "API: /users"
+
+
+# Configure Caddy with route and terminal handlers
+POST http://localhost:2019/load
+Content-Type: text/caddyfile
+```
+{
+	skip_install_trust
+	http_port     9080
+	https_port    9443
+	local_certs
+}
+localhost {
+	route {
+		header X-First "1"
+		respond "Response"
+		header X-Second "2"
+	}
+}
+```
+
+# route stops at terminal handler (respond)
+GET https://localhost:9443
+[Options]
+insecure: true
+HTTP 200
+[Asserts]
+header "X-First" == "1"
+header "X-Second" not exists
+
+
+# Configure Caddy with route preserving handler order
+POST http://localhost:2019/load
+Content-Type: text/caddyfile
+```
+{
+	skip_install_trust
+	http_port     9080
+	https_port    9443
+	local_certs
+}
+localhost {
+	route {
+		vars step1 "done"
+		vars step2 "done"
+		vars step3 "done"
+		respond "{vars.step1},{vars.step2},{vars.step3}"
+	}
+}
+```
+
+# route preserves exact handler order
+GET https://localhost:9443
+[Options]
+insecure: true
+HTTP 200
+[Asserts]
+body == "done,done,done"
+
+
+# Configure Caddy with route and matchers
+POST http://localhost:2019/load
+Content-Type: text/caddyfile
+```
+{
+	skip_install_trust
+	http_port     9080
+	https_port    9443
+	local_certs
+}
+localhost {
+	route {
+		@api path /api/*
+		vars @api type "api"
+		vars type "other"
+		respond "{vars.type}"
+	}
+}
+```
+
+# route applies matchers in sequence
+GET https://localhost:9443/api/test
+[Options]
+insecure: true
+HTTP 200
+[Asserts]
+body == "other"
+
+
+# route continues when matcher doesn't match
+GET https://localhost:9443/test
+[Options]
+insecure: true
+HTTP 200
+[Asserts]
+body == "other"