correct add/sub/div/mul/addn/cast/unique and add ut

mindspore/lite/schema/ops.fbs

@@ -384,15 +384,19 @@ table Eltwise {
 }
 
 table Add {
+    activationType : ActivationType;
 }
 
 table Sub {
+    activationType : ActivationType;
 }
 
 table Mul {
+    activationType : ActivationType;
 }
 
 table Div {
+    activationType : ActivationType;
 }
 
 table AddGrad {

mindspore/lite/test/ut/tools/converter/parser/tflite/tflite_addn_parser_test.cc

@@ -0,0 +1,44 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ut/tools/converter/parser/tflite/tflite_parsers_test_utils.h"
+#include <iostream>
+#include "common/common_test.h"
+
+namespace mindspore {
+class TestTfliteParserAddN : public TestTfliteParser {
+ public:
+  TestTfliteParserAddN() {}
+  void SetUp() override {
+    meta_graph = LoadAndConvert("./addn.tflite");
+  }
+};
+
+TEST_F(TestTfliteParserAddN, OpType) {
+  ASSERT_NE(meta_graph, nullptr);
+  ASSERT_GT(meta_graph->nodes.size(), 0);
+  ASSERT_NE(meta_graph->nodes.front()->primitive.get(), nullptr);
+  ASSERT_EQ(meta_graph->nodes.front()->primitive->value.type, schema::PrimitiveType_AddN) << "wrong Op Type";
+}
+
+TEST_F(TestTfliteParserAddN, AttrValue) {
+  ASSERT_NE(meta_graph, nullptr);
+  ASSERT_GT(meta_graph->nodes.size(), 0);
+  ASSERT_NE(meta_graph->nodes.front()->primitive.get(), nullptr);
+  ASSERT_NE(meta_graph->nodes.front()->primitive->value.AsAddN(), nullptr);
+  ASSERT_EQ(meta_graph->nodes.front()->primitive->value.AsAddN()->N, 4);
+}
+}  // namespace mindspore