- Fixing issue with parameter expansion on DAG submission to server

- Adding sections to unit_server tests
- Adding cleanup

tests/unit_server.cpp

@@ -62,29 +62,34 @@ TEST_CASE("Server Basic Endpoints", "[server_basic]") {
     const std::string host = "localhost:";
     const std::string baseURL = host + std::to_string(server.getPort());
 
-    {
+    SECTION ("Ready Endpoint") {
         auto response = REQUEST(baseURL + "/ready");
         REQUIRE(response.code() == Pistache::Http::Code::Ok);
     }
 
-    std::string dagRun = R"({
-    "name": "unit_server",
-    "parameters": { "DIRS": [ "A", "B" ] },
-    "tasks": [
-       { "name": "touch",
-         "command": [ "/usr/bin/touch", "/tmp/{{DIRS}}" ]
-       },
-       {
-         "name": "cat",
-         "command": [ "/usr/bin/cat", "/tmp/A", "/tmp/B" ]
-         "parents": [ "touch" ]
-       }
-       ]
-    })";
+    SECTION("Simple DAGRun Submission") {
+        std::string dagRun = R"({
+            "name": "unit_server",
+            "parameters": { "FILE": [ "A", "B" ] },
+            "tasks": [
+               { "name": "touch",
+                 "command": [ "/usr/bin/touch", "/tmp/{{FILE}}" ]
+               },
+               {
+                 "name": "cat",
+                 "command": [ "/usr/bin/cat", "/tmp/A", "/tmp/B" ],
+                 "parents": [ "touch" ]
+               }
+               ]
+            })";
 
-    {
         auto response = REQUEST(baseURL + "/v1/dagrun/", dagRun);
         REQUIRE(response.code() == Pistache::Http::Code::Ok);
+
+        for (const auto &pth : std::vector<fs::path>{"/tmp/A", "/tmp/B"}) {
+            REQUIRE(fs::exists(pth));
+            fs::remove(pth);
+        }
     }
 
     server.shutdown();