Add smooth test

source/tests/model_smooth/data/type.raw

@@ -0,0 +1,6 @@
+0
+1
+1
+0
+1
+1

source/tests/model_smooth/data/type_map.raw

@@ -0,0 +1,2 @@
+O
+H

source/tests/model_smooth/input.json

@@ -0,0 +1,85 @@
+{
+  "_comment1": " model parameters",
+  "model": {
+    "type_map": [
+      "O",
+      "H",
+      "B"
+    ],
+    "descriptor": {
+      "type": "se_e2_a",
+      "sel": [
+        46,
+        92,
+        4
+      ],
+      "rcut_smth": 0.50,
+      "rcut": 6.00,
+      "neuron": [
+        4,
+        8,
+        16
+      ],
+      "resnet_dt": false,
+      "axis_neuron": 16,
+      "seed": 1,
+      "_comment2": " that's all"
+    },
+    "fitting_net": {
+      "neuron": [
+        20,
+        20,
+        20
+      ],
+      "resnet_dt": true,
+      "seed": 1,
+      "_comment3": " that's all"
+    },
+    "_comment4": " that's all"
+  },
+
+  "learning_rate": {
+    "type": "exp",
+    "decay_steps": 5000,
+    "start_lr": 0.001,
+    "stop_lr": 3.51e-8,
+    "_comment5": "that's all"
+  },
+
+  "loss": {
+    "type": "ener",
+    "start_pref_e": 0.02,
+    "limit_pref_e": 1,
+    "start_pref_f": 1000,
+    "limit_pref_f": 1,
+    "start_pref_v": 1,
+    "limit_pref_v": 1,
+    "_comment6": " that's all"
+  },
+
+  "training": {
+    "training_data": {
+      "systems": [
+        "model_smooth/data"
+      ],
+      "batch_size": "auto",
+      "_comment7": "that's all"
+    },
+    "validation_data": {
+      "systems": [
+        "model_smooth/data"
+      ],
+      "batch_size": 1,
+      "numb_btch": 3,
+      "_comment8": "that's all"
+    },
+    "numb_steps": 1,
+    "seed": 10,
+    "disp_file": "lcurve.out",
+    "disp_freq": 1,
+    "save_freq": 1,
+    "_comment9": "that's all"
+  },
+
+  "_comment10": "that's all"
+}