/*
 *
 * Copyright 2017 gRPC authors.
 *
 * 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 grpc

import (
	"reflect"
	"testing"
	"time"
)

func TestParseLoadBalancer(t *testing.T) {
	testcases := []struct {
		scjs    string
		wantSC  ServiceConfig
		wantErr bool
	}{
		{
			`{
    "loadBalancingPolicy": "round_robin",
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "waitForReady": true
        }
    ]
}`,
			ServiceConfig{
				LB: newString("round_robin"),
				Methods: map[string]MethodConfig{
					"/foo/Bar": {
						WaitForReady: newBool(true),
					},
				},
			},
			false,
		},
		{
			`{
    "loadBalancingPolicy": 1,
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "waitForReady": false
        }
    ]
}`,
			ServiceConfig{},
			true,
		},
	}

	for _, c := range testcases {
		sc, err := parseServiceConfig(c.scjs)
		if c.wantErr != (err != nil) || !reflect.DeepEqual(sc, c.wantSC) {
			t.Fatalf("parseServiceConfig(%s) = %+v, %v, want %+v, %v", c.scjs, sc, err, c.wantSC, c.wantErr)
		}
	}
}

func TestPraseWaitForReady(t *testing.T) {
	testcases := []struct {
		scjs    string
		wantSC  ServiceConfig
		wantErr bool
	}{
		{
			`{
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "waitForReady": true
        }
    ]
}`,
			ServiceConfig{
				Methods: map[string]MethodConfig{
					"/foo/Bar": {
						WaitForReady: newBool(true),
					},
				},
			},
			false,
		},
		{
			`{
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "waitForReady": false
        }
    ]
}`,
			ServiceConfig{
				Methods: map[string]MethodConfig{
					"/foo/Bar": {
						WaitForReady: newBool(false),
					},
				},
			},
			false,
		},
		{
			`{
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "waitForReady": fall
        },
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "waitForReady": true
        }
    ]
}`,
			ServiceConfig{},
			true,
		},
	}

	for _, c := range testcases {
		sc, err := parseServiceConfig(c.scjs)
		if c.wantErr != (err != nil) || !reflect.DeepEqual(sc, c.wantSC) {
			t.Fatalf("parseServiceConfig(%s) = %+v, %v, want %+v, %v", c.scjs, sc, err, c.wantSC, c.wantErr)
		}
	}
}

func TestPraseTimeOut(t *testing.T) {
	testcases := []struct {
		scjs    string
		wantSC  ServiceConfig
		wantErr bool
	}{
		{
			`{
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "timeout": "1s"
        }
    ]
}`,
			ServiceConfig{
				Methods: map[string]MethodConfig{
					"/foo/Bar": {
						Timeout: newDuration(time.Second),
					},
				},
			},
			false,
		},
		{
			`{
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "timeout": "3c"
        }
    ]
}`,
			ServiceConfig{},
			true,
		},
		{
			`{
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "timeout": "3c"
        },
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "timeout": "1s"
        }
    ]
}`,
			ServiceConfig{},
			true,
		},
	}

	for _, c := range testcases {
		sc, err := parseServiceConfig(c.scjs)
		if c.wantErr != (err != nil) || !reflect.DeepEqual(sc, c.wantSC) {
			t.Fatalf("parseServiceConfig(%s) = %+v, %v, want %+v, %v", c.scjs, sc, err, c.wantSC, c.wantErr)
		}
	}
}

func TestPraseMsgSize(t *testing.T) {
	testcases := []struct {
		scjs    string
		wantSC  ServiceConfig
		wantErr bool
	}{
		{
			`{
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "maxRequestMessageBytes": 1024,
            "maxResponseMessageBytes": 2048
        }
    ]
}`,
			ServiceConfig{
				Methods: map[string]MethodConfig{
					"/foo/Bar": {
						MaxReqSize:  newInt(1024),
						MaxRespSize: newInt(2048),
					},
				},
			},
			false,
		},
		{
			`{
    "methodConfig": [
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "maxRequestMessageBytes": "1024",
            "maxResponseMessageBytes": "2048"
        },
        {
            "name": [
                {
                    "service": "foo",
                    "method": "Bar"
                }
            ],
            "maxRequestMessageBytes": 1024,
            "maxResponseMessageBytes": 2048
        }
    ]
}`,
			ServiceConfig{},
			true,
		},
	}

	for _, c := range testcases {
		sc, err := parseServiceConfig(c.scjs)
		if c.wantErr != (err != nil) || !reflect.DeepEqual(sc, c.wantSC) {
			t.Fatalf("parseServiceConfig(%s) = %+v, %v, want %+v, %v", c.scjs, sc, err, c.wantSC, c.wantErr)
		}
	}
}
