Add Plugin de-graphql (#303)

plugins/wasm-go/extensions/de-graphql/config/degraphql_config_test.go

@@ -0,0 +1,177 @@
+// Copyright (c) 2022 Alibaba Group Holding 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.
+
+package config
+
+import (
+	"errors"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestDeGraphQLConfig_SetGql(t *testing.T) {
+	tests := []struct {
+		name          string
+		gql           string
+		wantVariables []Variable
+		wantErr       error
+	}{
+		{
+			name:    "empty gql",
+			gql:     "",
+			wantErr: errors.New("gql can't be empty"),
+		},
+		{
+			name:          "no params",
+			gql:           "query",
+			wantVariables: []Variable{},
+			wantErr:       nil,
+		},
+		{
+			name:    "four params",
+			gql:     "query ($owner:String $num:Float! $int : Int! $boolean : Boolean  )",
+			wantErr: nil,
+			wantVariables: []Variable{
+				{
+					name:  "owner",
+					typ:   StringType,
+					blank: true,
+				},
+				{
+					name:  "num",
+					typ:   FloatType,
+					blank: false,
+				},
+				{
+					name:  "int",
+					typ:   IntType,
+					blank: false,
+				},
+				{
+					name:  "boolean",
+					typ:   BooleanType,
+					blank: true,
+				},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			d := &DeGraphQLConfig{}
+			err := d.SetGql(tt.gql)
+			assert.Equal(t, tt.wantErr, err)
+			if err != nil {
+				return
+			}
+			assert.Equal(t, tt.wantVariables, d.variables)
+		})
+	}
+}
+
+func TestDeGraphQLConfig_ParseGqlFromUrl(t *testing.T) {
+
+	tests := []struct {
+		name    string
+		gql     string
+		url     string
+		want    string
+		wantErr error
+	}{
+		{
+			name:    "empty url",
+			gql:     "query ($owner:String! $name:String!)",
+			url:     "",
+			want:    "",
+			wantErr: errors.New("request url can't be empty"),
+		},
+
+		{
+			name:    "no params",
+			gql:     "query HeroNameQuery {\n  hero {\n    name\n  }\n}",
+			url:     "/api?owner=a",
+			want:    "{\"query\":\"query HeroNameQuery {\\n  hero {\\n    name\\n  }\\n}\"}",
+			wantErr: nil,
+		},
+
+		{
+			name:    "one string variable",
+			gql:     "query FetchSomeIDQuery($someId: String!) {\n  human(id: $someId) {\n    name\n  }\n}",
+			url:     "/api?someId=a",
+			want:    "{\"query\":\"query FetchSomeIDQuery($someId: String!) {\\n  human(id: $someId) {\\n    name\\n  }\\n}\",\"variables\":{\"someId\":\"a\"}}",
+			wantErr: nil,
+		},
+
+		{
+			name:    "multi variables",
+			gql:     "query FetchSomeIDQuery($someId: String! $num: Int $price: Float! $need:Boolean!) {\n  human(id: $someId) {\n    name\n  }\n}",
+			url:     "/api?someId=a&num=10&price=12.0&need=false&hee=1",
+			want:    "{\"query\":\"query FetchSomeIDQuery($someId: String! $num: Int $price: Float! $need:Boolean!) {\\n  human(id: $someId) {\\n    name\\n  }\\n}\",\"variables\":{\"someId\":\"a\",\"num\":10,\"price\":12.0,\"need\":false}}",
+			wantErr: nil,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			d := &DeGraphQLConfig{}
+			d.SetGql(tt.gql)
+			body, err := d.ParseGqlFromUrl(tt.url)
+			assert.Equal(t, tt.wantErr, err)
+			if err != nil {
+				return
+			}
+			assert.Equal(t, tt.want, body)
+		})
+	}
+}
+
+func TestDeGraphQLConfig_SetEndpoint(t *testing.T) {
+
+	tests := []struct {
+		name     string
+		endPoint string
+		wantErr  error
+		want     string
+	}{
+		{
+			name:     "empty endpoint",
+			endPoint: "",
+			wantErr:  nil,
+			want:     "/graphql",
+		},
+		{
+			name:     "empty endpoint with blank",
+			endPoint: "   ",
+			wantErr:  nil,
+			want:     "/graphql",
+		},
+
+		{
+			name:     "with value",
+			endPoint: " /graphql2 ",
+			wantErr:  nil,
+			want:     "/graphql2",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			d := &DeGraphQLConfig{}
+			err := d.SetEndpoint(tt.endPoint)
+			assert.Equal(t, tt.wantErr, err)
+			if err != nil {
+				return
+			}
+			assert.Equal(t, tt.want, d.endpoint)
+		})
+	}
+}