ported FetchHTTP to HTTPFetch

Signed-off-by: Richard Jones <richard@dagger.io>

tests/tasks.bats

@@ -105,6 +105,11 @@ setup() {
     assert_failure
     run "$DAGGER" --europa up ./tasks/gitPull/bad_ref.cue
     assert_failure
-
-
+}
+
+@test "task: #HTTPFetch" {
+    cd "$TESTDIR"
+    "$DAGGER" --europa up ./tasks/httpfetch/exist.cue
+    run "$DAGGER" --europa up ./tasks/httpfetch/not_exist.cue
+    assert_failure
 }

tests/tasks/httpfetch/exist.cue

@@ -0,0 +1,10 @@
+package main
+
+import "alpha.dagger.io/europa/dagger/engine"
+
+engine.#Plan & {
+	actions: fetch: engine.#HTTPFetch & {
+		source: "https://releases.dagger.io/dagger/latest_version"
+		dest:   "/latest.html"
+	}
+}

tests/tasks/httpfetch/not_exist.cue

@@ -0,0 +1,10 @@
+package main
+
+import "alpha.dagger.io/europa/dagger/engine"
+
+engine.#Plan & {
+	actions: fetch: engine.#HTTPFetch & {
+		source: "https://releases.dagger.io/dagger/asfgdsfg"
+		dest:   "/latest.html"
+	}
+}