Working

.gitignore

@@ -39,4 +39,6 @@ bin/
 .vscode/
 
 ### Mac OS ###
-.DS_Store
+.DS_Store
+
+src/test/resources/supabase

.idea/gradle.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>

.idea/sqldialects.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SqlDialectMappings">
+    <file url="file://$PROJECT_DIR$/src/test/kotlin/MainKtTest.kt" dialect="GenericSQL" />
+    <file url="PROJECT" dialect="PostgreSQL" />
+  </component>
+</project>

README.md

@@ -0,0 +1,70 @@
+# Supabase Test Container for Kotlin
+
+This repo demonstrates the use of [Test Containers](https://testcontainers.com/) against a full local [Supabase](https://supabase.com/) instance
+
+Supabase allows for self-hosting (see [here](https://supabase.com/docs/guides/self-hosting/docker)). We use that to run a local instance of Supabase for testing.
+
+
+## Manual steps (for now) - do it once
+
+* You need to have the Supabase repo available locally to play around
+  
+```bash 
+$ git clone --depth 1 https://github.com/supabase/supabase src/test/resources/supabase
+$ cp src/test/resources/supabase/docker/.env.example src/test/resources/supabase/docker/.env
+```
+
+_Note : I've added `src/test/resources/supabase` to the `.gitignore` file, so that it does not get pushed to the repo._ 
+
+### Container names fun stuff
+
+Interestingly, Test Containers don't support the `container_name` property in the `docker-compose.yml` file, [and don't seem to intend to either](https://github.com/testcontainers/testcontainers-java/pull/2741).
+But it also doesn't get ignored meaning that if you run the tests now, you'll get the following error: 
+
+```
+java.lang.IllegalStateException: Compose file supabase-testcontainers-kotlin/src/test/resources/supabase/docker/docker-compose.yml has 'container_name' property set for service 'studio' but this property is not supported by Testcontainers, consider removing it
+	at org.testcontainers.containers.ParsedDockerComposeFile.validateNoContainerNameSpecified(ParsedDockerComposeFile.java:113)
+```
+
+To avoid that, we'll remove the `container_name` properties from the `docker-compose.yml` file. Do note that it might have an impact if you want to run the containers manually though.
+
+```bash
+$ grep -v "container_name" docker/docker-compose.yml > tmpfile && mv tmpfile docker/docker-compose.yml
+```
+
+## Updating the Supabase repo to the latest version
+
+Cloning the repo is great, but we also need to stay in think with sync with the latest version of Supabase. 
+Once in a while, you'll need to update the repo.
+
+```bash
+$ cd src/test/resources/supabase
+$ git pull
+```
+
+_Note : Remember, we modified `docker-compose.yml` to remove the `container_name` property. This might lead to conflict at times if the file gets modified_
+
+## Running the tests
+
+For now, we'll avoid the creation of database and more, and simply run against existing tables of the public database and see what's up.
+
+Run the test in `MainTest.kt`.
+Note that the rests are quite long to run (obviously, I'd say), and that the Supabase compose file is setup so that volumes are saved in between runs.
+
+```
+$ ./gradlew test                                                                                                                                                                ✔ ╱ 17:38:27  
+
+Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0.
+
+You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.
+
+For more on this, please refer to https://docs.gradle.org/8.2/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.
+
+BUILD SUCCESSFUL in 53s
+4 actionable tasks: 3 executed, 1 up-to-date
+
+```
+
+## Author
+
+* Julien Lengrand-Lambert (@jlengrand)

build.gradle.kts

@@ -33,6 +33,8 @@ dependencies {
 
     testImplementation("io.mockk:mockk:1.13.7")
     testImplementation("io.ktor:ktor-client-mock:2.3.5")
+
+    testImplementation("io.github.cdimascio:dotenv-kotlin:6.4.1")
 }
 
 tasks.test {

src/main/kotlin/Main.kt

@@ -25,18 +25,7 @@ data class ResultPerson (
 }
 
 fun main() {
-    println("Hello World!")
-    // Application goes here
-    val supabaseClient = createSupabaseClient(
-        supabaseUrl = "",
-        supabaseKey = ""
-    ) {
-        install(Postgrest)
-    }
-
-    runBlocking {
-        savePerson(listOf(Person("Jan", 30), Person("Jane", 42)), supabaseClient)
-    }
+    // Your application logic
 }
 
 suspend fun getPerson(client: SupabaseClient): List<ResultPerson> {

src/test/kotlin/MainKtTest.kt

@@ -1,42 +1,22 @@
+import io.github.cdimascio.dotenv.dotenv
 import io.github.jan.supabase.SupabaseClient
 import io.github.jan.supabase.createSupabaseClient
 import io.github.jan.supabase.postgrest.Postgrest
-import io.github.jan.supabase.postgrest.postgrest
 import kotlinx.coroutines.runBlocking
+import org.junit.jupiter.api.AfterAll
+import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.Assertions.assertEquals
-import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.BeforeAll
 import org.junit.jupiter.api.Test
 import org.testcontainers.containers.ComposeContainer
 import org.testcontainers.junit.jupiter.Container
 import org.testcontainers.junit.jupiter.Testcontainers
 import java.io.File
+import java.sql.DriverManager
+
 
 @Testcontainers
-class MainKtTestTestContainers {
-
-    private val jwtToken = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyAgCiAgICAicm9sZSI6ICJzZXJ2aWNlX3JvbGUiLAogICAgImlzcyI6ICJzdXBhYmFzZS1kZW1vIiwKICAgICJpYXQiOiAxNjQxNzY5MjAwLAogICAgImV4cCI6IDE3OTk1MzU2MDAKfQ.DaYlNEoUrrEn2Ig7tqibS-PHK5vgusbcbo7X36XVt4Q"
-
-    private lateinit var supabaseClient: SupabaseClient
-
-    @Container
-    var environment: ComposeContainer =
-        ComposeContainer(File("src/test/resources/supabase/docker/docker-compose.yml"))
-            .withExposedService("kong", 8000)
-            .withExposedService("analytics", 4000)
-            .withExposedService("db", 5432)
-
-    @BeforeEach
-    fun setUp() {
-        val fakeSupabaseUrl = environment.getServiceHost("kong", 8000) +
-                ":" + environment.getServicePort("kong", 8000)
-
-        supabaseClient = createSupabaseClient(
-            supabaseUrl = "http://$fakeSupabaseUrl",
-            supabaseKey = jwtToken
-        ) {
-            install(Postgrest)
-        }
-    }
+class MainKtTest {
 
     @Test
     fun testEmptyPersonTable(){
@@ -60,4 +40,83 @@ class MainKtTestTestContainers {
             assertEquals(randomPersons, fetchResult.map { it.toPerson() })
         }
     }
+
+    companion object {
+
+        private const val DOCKER_COMPOSE_FILE = "src/test/resources/supabase/docker/docker-compose.yml"
+        private const val ENV_LOCATION = "src/test/resources/supabase/docker/.env" // We grab the JWT token from here
+
+        val dotenv = dotenv{
+            directory = File(ENV_LOCATION).toString()
+        }
+
+        private val jwtToken = dotenv["SERVICE_ROLE_KEY"]
+        private val dbPassword = dotenv["POSTGRES_PASSWORD"]
+        private val db = dotenv["POSTGRES_DB"]
+
+        private lateinit var supabaseClient: SupabaseClient
+
+        @Container
+        var container: ComposeContainer = ComposeContainer(File(DOCKER_COMPOSE_FILE))
+            .withExposedService("kong", 8000)
+            .withExposedService("db", 5432)   // Handy but not required
+
+        @JvmStatic
+        @AfterAll
+        fun tearDown() {
+            val dbUrl = container.getServiceHost("db", 5432) + ":" + container.getServicePort("db", 5432)
+
+            val jdbcUrl = "jdbc:postgresql://$dbUrl/$db"
+            val connection = DriverManager.getConnection(jdbcUrl, "postgres", dbPassword)
+
+            try {
+                val query = connection.prepareStatement(
+                    """
+            drop table public.person;
+        """
+                )
+
+                query.executeQuery()
+            } catch (ex: Exception) {
+                println(ex)
+            }
+        }
+
+        @JvmStatic
+        @BeforeAll
+        fun setUp() {
+            val supabaseUrl = container.getServiceHost("kong", 8000) + ":" + container.getServicePort("kong", 8000)
+            val dbUrl = container.getServiceHost("db", 5432) + ":" + container.getServicePort("db", 5432)
+
+            supabaseClient = createSupabaseClient(
+                supabaseUrl = "http://$supabaseUrl",
+                supabaseKey = jwtToken
+            ) {
+                install(Postgrest)
+            }
+
+            val jdbcUrl = "jdbc:postgresql://$dbUrl/$db"
+            val connection = DriverManager.getConnection(jdbcUrl, "postgres", dbPassword)
+
+
+            try {
+                val query = connection.prepareStatement(
+                    """
+                create table
+                    public.person (
+                                    id bigint generated by default as identity not null,
+                                    timestamp timestamp with time zone null default now(),
+                                    name character varying null,
+                                    age bigint null
+                ) tablespace pg_default;
+                """
+                )
+
+                query.executeQuery()
+            } catch (ex: Exception) {
+                println("Error is fine here. This should actually run only once")
+                println(ex) // Might be fine, this should actually run only once
+            }
+        }
+    }
 }

src/test/resources/initdb/person.sql

@@ -0,0 +1,7 @@
+create table
+    public.person (
+                    id bigint generated by default as identity not null,
+                    timestamp timestamp with time zone null default now(),
+                    name character varying null,
+                    age bigint null
+) tablespace pg_default;