Add doobie-munit package to integrate Doobie with the shiny new MUnit

build.sbt

@@ -17,6 +17,7 @@ lazy val postgresVersion      = "42.2.18"
 lazy val refinedVersion       = "0.9.19"
 lazy val scalaCheckVersion    = "1.15.1"
 lazy val scalatestVersion     = "3.2.3"
+lazy val munitVersion         = "0.7.21"
 lazy val silencerVersion      = "1.7.1"
 lazy val specs2Version        = "4.10.6"
 lazy val scala212Version      = "2.12.12"
@@ -162,6 +163,7 @@ lazy val doobie = project.in(file("."))
     quill,
     refined,
     scalatest,
+    munit,
     specs2,
   )
 
@@ -390,6 +392,22 @@ lazy val scalatest = project
   )
   .settings(noDottySettings)
 
+lazy val munit = project
+  .in(file("modules/munit"))
+  .enablePlugins(AutomateHeaderPlugin)
+  .dependsOn(core)
+  .settings(doobieSettings)
+  .settings(publishSettings)
+  .settings(
+    name := s"doobie-munit",
+    description := "MUnit support for doobie.",
+    testFrameworks += new TestFramework("munit.Framework"),
+    libraryDependencies ++= Seq(
+      "org.scalameta" %% "munit" % munitVersion,
+      "com.h2database"  %  "h2"  % h2Version % "test"
+    )
+  )
+
 lazy val bench = project
   .in(file("modules/bench"))
   .enablePlugins(AutomateHeaderPlugin)
@@ -400,7 +418,7 @@ lazy val bench = project
 
 lazy val docs = project
   .in(file("modules/docs"))
-  .dependsOn(core, postgres, specs2, hikari, h2, scalatest, quill)
+  .dependsOn(core, postgres, specs2, munit, hikari, h2, scalatest, quill)
   .enablePlugins(ParadoxPlugin)
   .enablePlugins(ParadoxSitePlugin)
   .enablePlugins(GhpagesPlugin)

modules/docs/src/main/mdoc/docs/06-Checking.md

@@ -99,7 +99,7 @@ def biggerThan2(minPop: Int) =
 biggerThan2(0).check.unsafeRunSync()
 ```
 
-**doobie** supports `check` for queries and updates in three ways: programmatically, via YOLO mode in the REPL, and via the `doobie-specs2` and `doobie-scalatest` packages, which allow checking to become part of your unit test suite. We will investigate this in the chapter on testing.
+**doobie** supports `check` for queries and updates in four ways: programmatically, via YOLO mode in the REPL, and via the `doobie-specs2`, `doobie-scalatest` and `doobie-munit` packages, which allow checking to become part of your unit test suite. We will investigate this in the chapter on testing.
 
 ### Working Around Bad Metadata
 

modules/docs/src/main/mdoc/docs/13-Unit-Testing.md

@@ -1,6 +1,6 @@
 ## Unit Testing
 
-The YOLO-mode query checking feature demonstated in an earlier chapter is also available as a trait you can mix into your [Specs2](http://etorreborre.github.io/specs2/) or [ScalaTest](http://www.scalatest.org/) unit tests.
+The YOLO-mode query checking feature demonstated in an earlier chapter is also available as a trait you can mix into your [Specs2](http://etorreborre.github.io/specs2/), [ScalaTest](http://www.scalatest.org/) or [MUnit](https://scalameta.org/munit) unit tests.
 
 ### Setting Up
 
@@ -129,3 +129,25 @@ Details are shown for failing tests.
 // Run a test programmatically. Usually you would do this from sbt, bloop, etc.
 (new AnalysisTestScalaCheck).execute(color = false)
 ```
+
+### The MUnit Package
+
+The `doobie-munit` add-on provides a mix-in trait that we can add to any `Assertions` implementation (like `FunSuite`) much like the ScalaTest package above.
+
+```scala mdoc:silent
+import _root_.munit._
+
+class AnalysisTestSuite extends FunSuite with doobie.munit.IOChecker {
+
+  override val colors = doobie.util.Colors.None // just for docs
+
+  val transactor = Transactor.fromDriverManager[IO](
+    "org.postgresql.Driver", "jdbc:postgresql:world", "postgres", ""
+  )
+
+  test("trivial")    { check(trivial)        }
+  test("biggerThan") { check(biggerThan(0))  }
+  test("update")     { check(update("", "")) }
+
+}
+```

modules/munit/src/main/scala/doobie/munit/analysisspec.scala

@@ -0,0 +1,67 @@
+// Copyright (c) 2013-2020 Rob Norris and Contributors
+// This software is licensed under the MIT License (MIT).
+// For more information see LICENSE or https://opensource.org/licenses/MIT
+
+package doobie.munit
+
+import cats.effect.{ Effect, IO }
+import doobie.util.query.{Query, Query0}
+import doobie.util.testing._
+import org.tpolecat.typename._
+import munit.Assertions
+import munit.Location
+
+/**
+ * Module with a mix-in trait for specifications that enables checking of doobie `Query` and `Update` values.
+ * 
+ * {{{
+ * class ExampleSuite extends FunSuite with IOChecker {
+ *
+ *   // The transactor to use for the tests.
+ *   val transactor = Transactor.fromDriverManager[IO](
+ *     "org.postgresql.Driver",
+ *     "jdbc:postgresql:world",
+ *     "postgres", ""
+ *   )
+ *
+ *   // Now just mention the queries. Arguments are not used.
+ *   test("findByNameAndAge") { check(MyDaoModule.findByNameAndAge(null, 0)) }
+ *   test("allWoozles") { check(MyDaoModule.allWoozles) }
+ *
+ * }
+ * }}}
+ */
+object analysisspec {
+
+  trait Checker[M[_]] extends CheckerBase[M] { this: Assertions =>
+
+    def check[A: Analyzable](a: A)(implicit loc: Location) = checkImpl(Analyzable.unpack(a))
+
+    def checkOutput[A: TypeName](q: Query0[A])(implicit loc: Location) =
+      checkImpl(AnalysisArgs(
+        s"Query0[${typeName[A]}]", q.pos, q.sql, q.outputAnalysis
+      ))
+
+    def checkOutput[A: TypeName, B: TypeName](q: Query[A, B])(implicit loc: Location) =
+      checkImpl(AnalysisArgs(
+        s"Query[${typeName[A]}, ${typeName[B]}]", q.pos, q.sql, q.outputAnalysis
+      ))
+
+    private def checkImpl(args: AnalysisArgs)(implicit loc: Location) = {
+      val report = analyzeIO(args, transactor).unsafeRunSync()
+      if (!report.succeeded) {
+        fail(
+          formatReport(args, report, colors)
+            .padLeft("  ")
+            .toString
+        )
+      }
+    }
+  }
+
+  /** Implementation of Checker[IO] */
+  trait IOChecker extends Checker[IO] { 
+    self: Assertions =>
+    val M: Effect[IO] = implicitly
+  }
+}

modules/munit/src/main/scala/doobie/munit/package.scala

@@ -0,0 +1,12 @@
+// Copyright (c) 2013-2020 Rob Norris and Contributors
+// This software is licensed under the MIT License (MIT).
+// For more information see LICENSE or https://opensource.org/licenses/MIT
+
+package doobie
+
+package object munit {
+
+  type Checker[M[_]] = analysisspec.Checker[M]
+  type IOChecker     = analysisspec.IOChecker
+
+}

modules/munit/src/test/scala/doobie/munit/CheckerTests.scala

@@ -0,0 +1,30 @@
+// Copyright (c) 2013-2020 Rob Norris and Contributors
+// This software is licensed under the MIT License (MIT).
+// For more information see LICENSE or https://opensource.org/licenses/MIT
+
+package doobie.munit
+
+import cats.effect.{ ContextShift, IO }
+import doobie.syntax.string._
+import doobie.util.transactor.Transactor
+import munit._
+import scala.concurrent.ExecutionContext
+
+trait CheckerChecks[M[_]] extends FunSuite with Checker[M] {
+
+  implicit def contextShift: ContextShift[M]
+
+  lazy val transactor = Transactor.fromDriverManager[M](
+    "org.h2.Driver",
+    "jdbc:h2:mem:queryspec;DB_CLOSE_DELAY=-1",
+    "sa", ""
+  )
+
+  test("trivial") { check(sql"select 1".query[Int]) }
+
+}
+
+class IOCheckerCheck extends CheckerChecks[IO] with IOChecker {
+  def contextShift: ContextShift[IO] =
+    IO.contextShift(ExecutionContext.global)
+}