Fix configuration via code (#78)

Related to #73. The DefaultInstance would be initialized with the
default Config eagerly when building a new instance with configuration
via code. If there were no URL environment variable set, the
DefaultInstance init would throw due to a missing URL in its config.

Fix by ensuring that the default Config is initialized lazily.

library/build.gradle.kts

@@ -188,7 +188,7 @@ testing {
                 implementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.1")
             }
         }
-        withType<JvmTestSuite> {
+        withType<JvmTestSuite>().configureEach {
             useKotlinTest()
         }
     }
@@ -198,7 +198,13 @@ kotlin {
     target {
         val main by compilations.getting
         val integrationTest by compilations.getting
+        val test by compilations.getting
+        val testFixtures by compilations.getting
+        test.associateWith(main)
+        test.associateWith(testFixtures)
         integrationTest.associateWith(main)
+        integrationTest.associateWith(testFixtures)
+        testFixtures.associateWith(main)
     }
 }
 

library/src/integrationTest/kotlin/com/gabrielfeo/gradle/enterprise/api/internal/GradleEnterpriseApiIntegrationTest.kt

@@ -1,16 +1,33 @@
 package com.gabrielfeo.gradle.enterprise.api.internal
 
+import com.gabrielfeo.gradle.enterprise.api.Config
 import com.gabrielfeo.gradle.enterprise.api.GradleEnterpriseApi
 import kotlinx.coroutines.test.runTest
-import kotlin.test.Test
+import org.junit.jupiter.api.assertDoesNotThrow
 import kotlin.test.assertEquals
+import kotlin.test.Test
 
 class GradleEnterpriseApiIntegrationTest {
 
     @Test
-    fun canFetchBuilds() = runTest {
+    fun canFetchBuildsWithDefaultInstance() = runTest {
+        env = RealEnv
+        keychain = RealKeychain(RealSystemProperties)
         val builds = GradleEnterpriseApi.buildsApi.getBuilds(since = 0, maxBuilds = 1)
         assertEquals(1, builds.size)
         GradleEnterpriseApi.shutdown()
     }
+
+    @Test
+    fun canBuildNewInstanceWithPureCodeConfiguration() = runTest {
+        env = FakeEnv()
+        keychain = FakeKeychain()
+        assertDoesNotThrow {
+            val config = Config(
+                apiUrl = "https://google.com/api/",
+                apiToken = { "" },
+            )
+            GradleEnterpriseApi.newInstance(config)
+        }
+    }
 }

library/src/integrationTest/kotlin/com/gabrielfeo/gradle/enterprise/api/internal/KeychainIntegrationTest.kt

@@ -1,14 +1,14 @@
 package com.gabrielfeo.gradle.enterprise.api.internal
 
 import com.gabrielfeo.gradle.enterprise.api.internal.keychain
-import kotlin.test.Test
-import kotlin.test.assertFalse
-import kotlin.test.assertIs
+import kotlin.test.*
 
 internal class KeychainIntegrationTest {
 
     @Test
     fun getApiToken() {
+        env = RealEnv
+        keychain = RealKeychain(RealSystemProperties)
         val result = keychain.get("gradle-enterprise-api-token")
         assertIs<KeychainResult.Success>(result)
         assertFalse(result.token.isNullOrBlank(), "Keychain returned null or blank")

library/src/main/kotlin/com/gabrielfeo/gradle/enterprise/api/GradleEnterpriseApi.kt

@@ -65,9 +65,13 @@ interface GradleEnterpriseApi {
 }
 
 internal class RealGradleEnterpriseApi(
-    override val config: Config = Config(),
+    customConfig: Config? = null,
 ) : GradleEnterpriseApi {
 
+    override val config by lazy {
+        customConfig ?: Config()
+    }
+
     private val okHttpClient by lazy {
         buildOkHttpClient(config = config)
     }

library/src/test/kotlin/com/gabrielfeo/gradle/enterprise/api/internal/FakeEnv.kt

@@ -1,13 +1,2 @@
 package com.gabrielfeo.gradle.enterprise.api.internal
 
-class FakeEnv(
-    vararg vars: Pair<String, String?>,
-) : Env {
-
-    private val vars = vars.toMap(HashMap())
-
-    override fun get(name: String) = vars[name]
-
-    operator fun set(name: String, value: String?) = vars.put(name, value)
-    operator fun contains(name: String) = name in vars
-}

library/src/test/kotlin/com/gabrielfeo/gradle/enterprise/api/internal/FakeKeychain.kt

@@ -1,12 +1,2 @@
 package com.gabrielfeo.gradle.enterprise.api.internal
 
-internal class FakeKeychain(
-    vararg entries: Pair<String, String>,
-) : Keychain {
-
-    private val entries = entries.toMap()
-
-    override fun get(entry: String) =
-        entries[entry]?.let { KeychainResult.Success(it) }
-            ?: KeychainResult.Error("entry $entry not mocked")
-}

library/src/test/kotlin/com/gabrielfeo/gradle/enterprise/api/internal/FakeSystemProperties.kt

@@ -1,18 +1,2 @@
 package com.gabrielfeo.gradle.enterprise.api.internal
 
-class FakeSystemProperties(
-    vararg vars: Pair<String, String?>,
-) : SystemProperties {
-
-    companion object {
-        val macOs = FakeSystemProperties("os.name" to "Mac OS X")
-        val linux = FakeSystemProperties("os.name" to "Linux")
-    }
-
-    private val vars = vars.toMap(HashMap())
-
-    override fun get(name: String) = vars[name]
-
-    operator fun set(name: String, value: String?) = vars.put(name, value)
-    operator fun contains(name: String) = name in vars
-}

library/src/testFixtures/kotlin/com/gabrielfeo/gradle/enterprise/api/internal/FakeEnv.kt

@@ -0,0 +1,13 @@
+package com.gabrielfeo.gradle.enterprise.api.internal
+
+class FakeEnv(
+    vararg vars: Pair<String, String?>,
+) : Env {
+
+    private val vars = vars.toMap(HashMap())
+
+    override fun get(name: String) = vars[name]
+
+    operator fun set(name: String, value: String?) = vars.put(name, value)
+    operator fun contains(name: String) = name in vars
+}

library/src/testFixtures/kotlin/com/gabrielfeo/gradle/enterprise/api/internal/FakeKeychain.kt

@@ -0,0 +1,12 @@
+package com.gabrielfeo.gradle.enterprise.api.internal
+
+internal class FakeKeychain(
+    vararg entries: Pair<String, String>,
+) : Keychain {
+
+    private val entries = entries.toMap()
+
+    override fun get(entry: String) =
+        entries[entry]?.let { KeychainResult.Success(it) }
+            ?: KeychainResult.Error("entry $entry not mocked")
+}

library/src/testFixtures/kotlin/com/gabrielfeo/gradle/enterprise/api/internal/FakeSystemProperties.kt

@@ -0,0 +1,18 @@
+package com.gabrielfeo.gradle.enterprise.api.internal
+
+class FakeSystemProperties(
+    vararg vars: Pair<String, String?>,
+) : SystemProperties {
+
+    companion object {
+        val macOs = FakeSystemProperties("os.name" to "Mac OS X")
+        val linux = FakeSystemProperties("os.name" to "Linux")
+    }
+
+    private val vars = vars.toMap(HashMap())
+
+    override fun get(name: String) = vars[name]
+
+    operator fun set(name: String, value: String?) = vars.put(name, value)
+    operator fun contains(name: String) = name in vars
+}