seperate routes, provide robust handler types, use mux

server/ctrlsubsonic/testdata/test_get_artists_no_args

@@ -0,0 +1,75 @@
+{
+  "subsonic-response": {
+    "status": "ok",
+    "version": "1.9.0",
+    "artists": {
+      "index": [
+        {
+          "name": "#",
+          "artist": [
+            {
+              "id": 3,
+              "name": "13th Floor Elevators",
+              "albumCount": 2
+            }
+          ]
+        },
+        {
+          "name": "a",
+          "artist": [
+            {
+              "id": 2,
+              "name": "A Certain Ratio",
+              "albumCount": 2
+            },
+            {
+              "id": 4,
+              "name": "Anikas",
+              "albumCount": 1
+            }
+          ]
+        },
+        {
+          "name": "c",
+          "artist": [
+            {
+              "id": 7,
+              "name": "Captain Beefheart & His Magic Band",
+              "albumCount": 1
+            }
+          ]
+        },
+        {
+          "name": "j",
+          "artist": [
+            {
+              "id": 1,
+              "name": "Jah Wobble, The Edge & Holger Czukay",
+              "albumCount": 1
+            }
+          ]
+        },
+        {
+          "name": "s",
+          "artist": [
+            {
+              "id": 5,
+              "name": "Swell Maps",
+              "albumCount": 2
+            }
+          ]
+        },
+        {
+          "name": "t",
+          "artist": [
+            {
+              "id": 6,
+              "name": "Ten Years After",
+              "albumCount": 1
+            }
+          ]
+        }
+      ]
+    }
+  }
+}