Merge pull request #226 from ex0ns/lazy_val_context

Convert ioRuntime to lazy val

scalatest/shared/src/main/scala/cats/effect/testing/scalatest/AsyncIOSpec.scala

@@ -27,7 +27,7 @@ import org.scalatest.time.Span
 
 trait AsyncIOSpec extends AssertingSyntax with EffectTestSupport with RuntimePlatform { asyncTestSuite: AsyncTestSuite =>
 
-  implicit val ioRuntime: IORuntime = createIORuntime(executionContext)
+  implicit lazy val ioRuntime: IORuntime = createIORuntime(executionContext)
 
   implicit def ioRetrying[T]: Retrying[IO[T]] = new Retrying[IO[T]] {
     override def retry(timeout: Span, interval: Span, pos: Position)(fun: => IO[T]): IO[T] =

scalatest/shared/src/test/scala/cats/effect/testing/scalatest/IOTestAsyncFlatSpecLike.scala

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2020-2021 Typelevel
+ *
+ * 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 cats.effect.testing.scalatest
+
+import cats.effect.IO
+import org.scalatest.freespec.AsyncFreeSpecLike
+import org.scalatest.matchers.should.Matchers
+
+class IOSpecAsyncFlatSpecTests extends AsyncIOSpec with AsyncFreeSpecLike with Matchers {
+
+  "Asserting Syntax " - {
+    "IO Asserting" in {
+      IO(1).asserting(_ shouldBe 1)
+    }
+  }
+
+  "Effect assertions" - {
+    "IO Assertion" in {
+      IO(1 shouldBe 1)
+    }
+  }
+}
+