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How to use Up method of testcontainers Package

Best Testcontainers-go code snippet using testcontainers.Up

extmetric_test.go

Source:extmetric_test.go

1// SPDX-License-Identifier: MIT2// SPDX-FileCopyrightText: 2022 Steadybit GmbH3package extmetric4import (5	"context"6	"encoding/json"7	"fmt"8	"github.com/steadybit/action-kit/go/action_kit_api/v2"9	extension_kit "github.com/steadybit/extension-kit"10	"github.com/steadybit/extension-kit/extutil"11	"github.com/steadybit/extension-prometheus/extinstance"12	"github.com/stretchr/testify/assert"13	"github.com/stretchr/testify/require"14	"github.com/testcontainers/testcontainers-go"15	"github.com/testcontainers/testcontainers-go/wait"16	"os"17	"path"18	"testing"19	"time"20)21func TestQueryMetrics(t *testing.T) {22	// Given23	container, err := setupTestContainers(context.Background())24	require.Nil(t, err)25	instance := extinstance.Instance{Name: "test-prom", BaseUrl: container.baseUrl}26	extinstance.Instances = []extinstance.Instance{instance}27	require.Eventually(t, func() bool {28		result, err := getTestMetric(instance)29		return err == nil && len(*result.Metrics) > 030	}, time.Minute, time.Millisecond*200)31	// When32	result, exterr := getTestMetric(instance)33	require.Nil(t, exterr)34	assert.Len(t, *result.Metrics, 1)35	metric := (*result.Metrics)[0]36	assert.NotNil(t, metric.Timestamp)37	assert.Nil(t, metric.Name)38	assert.Equal(t, float64(1), metric.Value)39	assert.Equal(t, "up", metric.Metric["__name__"])40	assert.Equal(t, "localhost:9090", metric.Metric["instance"])41	assert.Equal(t, "prometheus", metric.Metric["job"])42}43func getTestMetric(instance extinstance.Instance) (*action_kit_api.QueryMetricsResult, *extension_kit.ExtensionError) {44	timestamp := time.Now()45	json, _ := json.Marshal(action_kit_api.QueryMetricsRequestBody{46		Target: extutil.Ptr(action_kit_api.Target{47			Name: instance.Name,48		}),49		Timestamp: timestamp,50		Config: map[string]interface{}{51			"query": "up",52		},53	})54	return Query(json)55}56type testContainer struct {57	container *testcontainers.Container58	baseUrl   string59}60func setupTestContainers(ctx context.Context) (*testContainer, error) {61	wd, err := os.Getwd()62	if err != nil {63		return nil, err64	}65	containerReq := testcontainers.ContainerRequest{66		Image:        "prom/prometheus:v2.38.0",67		Name:         "test-prometheus",68		ExposedPorts: []string{"9090/tcp"},69		WaitingFor:   wait.ForHTTP("/-/ready").WithPort("9090"),70		Mounts: testcontainers.ContainerMounts{71			testcontainers.ContainerMount{72				Source: testcontainers.GenericBindMountSource{73					HostPath: path.Join(wd, "prometheus-test-config"),74				},75				Target:   "/etc/prometheus",76				ReadOnly: true,77			},78		},79	}80	container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{81		ContainerRequest: containerReq,82		Started:          true,83	})84	if err != nil {85		return nil, err86	}87	ip, err := container.Host(ctx)88	if err != nil {89		return nil, err90	}91	port, err := container.MappedPort(ctx, "9090")92	if err != nil {93		return nil, err94	}95	origin := fmt.Sprintf("http://%s:%s", ip, port.Port())96	return &testContainer{97		container: &container,98		baseUrl:   origin,99	}, nil100}...

postgres_container.go

Source:postgres_container.go

...25	return PostgresContainer{26		Container: nil,27	}28}29// Up create a new postgres container with the connections params30func (c PostgresContainer) Up() PostgresConnection {31	containerRequest := testcontainers.ContainerRequest{32		Image:        "postgres",33		ExposedPorts: []string{fmt.Sprintf("%s/tcp", postgresPort)},34		WaitingFor:   wait.ForListeningPort(postgresPort),35		Env: map[string]string{36			"POSTGRES_USER":     postgresUser,37			"POSTGRES_PASSWORD": postgresPassword,38			"POSTGRES_DB":       postgresDatabase,39		},40	}41	container, err := testcontainers.GenericContainer(context.Background(), testcontainers.GenericContainerRequest{42		ContainerRequest: containerRequest,43		Started:          true,44	})...

redis_container.go

Source:redis_container.go

...20	return RedisContainer{21		Container: nil,22	}23}24// Up create a new redis container with the connections params25func (c RedisContainer) Up() RedisConnection {26	containerRequest := testcontainers.ContainerRequest{27		Image:        "redis",28		ExposedPorts: []string{fmt.Sprintf("%s/tcp", redisPort)},29		WaitingFor:   wait.ForListeningPort(redisPort),30	}31	container, err := testcontainers.GenericContainer(context.Background(), testcontainers.GenericContainerRequest{32		ContainerRequest: containerRequest,33		Started:          true,34	})35	if err != nil {36		panic(err)37	}38	c.Container = container39	containerHost, _ := container.Host(context.Background())...

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"3306/tcp"},6		WaitingFor:   wait.ForListeningPort("3306/tcp"),7	}8	mysqlContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		panic(err)12	}13	defer mysqlContainer.Terminate(ctx)14	ip, err := mysqlContainer.Host(ctx)15	if err != nil {16		panic(err)17	}18	port, err := mysqlContainer.MappedPort(ctx, "3306/tcp")19	if err != nil {20		panic(err)21	}22	fmt.Printf("host = %s, port = %s23", ip, port.Port())24}

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"5432/tcp"},6		WaitingFor:   wait.ForListeningPort("5432/tcp"),7	}8	postgresContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		log.Fatal(err)12	}13	ip, err := postgresContainer.Host(ctx)14	if err != nil {15		log.Fatal(err)16	}17	mappedPort, err := postgresContainer.MappedPort(ctx, "5432")18	if err != nil {19		log.Fatal(err)20	}21	fmt.Println(ip, mappedPort.Int())22}

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"3306/tcp"},6		WaitingFor:   wait.ForLog("port: 3306  MySQL Community Server - GPL"),7	}8	mysqlContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		log.Fatalf("Could not start container: %v", err)12	}13	defer mysqlContainer.Terminate(ctx)14	ip, err := mysqlContainer.Host(ctx)15	if err != nil {16		log.Fatalf("Could not get container IP: %v", err)17	}18	mappedPort, err := mysqlContainer.MappedPort(ctx, "3306")19	if err != nil {20		log.Fatalf("Could not get container mapped port: %v", err)21	}22	log.Printf("MySQL is available on %s:%s", ip, mappedPort.Port())

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"6379/tcp"},6		WaitingFor:   wait.ForLog("Ready to accept connections"),7	}8	redisContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		log.Fatal(err)12	}13	defer redisContainer.Terminate(ctx)14	redisHost, _ := redisContainer.Host(ctx)15	redisPort, _ := redisContainer.MappedPort(ctx, "6379")16	fmt.Println(redisHost, redisPort.Int())17}

Using AI Code Generation

1import (2func main() {3    ctx := context.Background()4    req := testcontainers.ContainerRequest{5        ExposedPorts: []string{"80/tcp"},6        WaitingFor:   wait.ForHttp("/"),7    }8    nginx, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9    })10    if err != nil {11        panic(err)12    }13    defer nginx.Terminate(ctx)14    ip, err := nginx.GetContainerIpAddress(ctx)15    if err != nil {16        panic(err)17    }18    fmt.Println("IP address of the container is", ip)19}

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