Replace utest with ScalaTest (#183)

build.sbt

@@ -106,8 +106,7 @@ lazy val samples = nativeProject("samples")
   .in(file("tests/samples"))
   .settings(
     publish / skip := true,
-    libraryDependencies += "com.lihaoyi" %%% "utest" % "0.6.3" % Test,
-    testFrameworks += new TestFramework("utest.runner.Framework"),
+    libraryDependencies += "org.scalatest" %%% "scalatest" % "3.2.0-SNAP10" % Test,
     compileTask("bindgentests", baseDirectory)
   )
 

tests/samples/src/test/scala/org/scalanative/bindgen/samples/EnumTests.scala → tests/samples/src/test/scala/org/scalanative/bindgen/samples/EnumSpec.scala

@@ -1,15 +1,15 @@
 package org.scalanative.bindgen.samples
 
-import utest._
+import org.scalatest.FunSpec
 import scalanative.native._
 
-object EnumTests extends TestSuite {
-  val tests = Tests {
-    'get_WEDNESDAY - {
+class EnumSpec extends FunSpec {
+  describe("enum bindings") {
+    it("should bind to C enum values") {
       assert(Enum.get_WEDNESDAY() == Enum.enum_days.WEDNESDAY)
     }
 
-    'check_BIG_NEG_A - {
+    it("should handle large negative values") {
       assert(
         Enum.check_BIG_NEG_A(Enum.enum_bigNegativeValues.BIG_NEG_A) == c"OK")
     }

tests/samples/src/test/scala/org/scalanative/bindgen/samples/ExternTests.scala → tests/samples/src/test/scala/org/scalanative/bindgen/samples/ExternSpec.scala

@@ -1,19 +1,16 @@
 package org.scalanative.bindgen.samples
 
-import utest._
+import org.scalatest.FunSpec
 import scalanative.native._
 
-object ExternTests extends TestSuite {
-  val tests = Tests {
-    'forty_two - {
+class ExternSpec extends FunSpec {
+  describe("extern variable bindings") {
+    it("should bind to C variable") {
       assert(Extern.forty_two == 42)
-    }
-
-    'mode - {
       assert(Extern.mode == Extern.enum_mode.USER)
     }
 
-    'semver - {
+    it("should bind to C struct variable") {
       import Extern.implicits._
       assert(
         Extern.semver.major == 1 && Extern.semver.minor == 2 && Extern.semver.patch == 3)

tests/samples/src/test/scala/org/scalanative/bindgen/samples/FunctionTest.scala → tests/samples/src/test/scala/org/scalanative/bindgen/samples/FunctionSpec.scala

@@ -1,33 +1,33 @@
 package org.scalanative.bindgen.samples
 
-import utest._
+import org.scalatest.FunSpec
 import scalanative.native._
 
-object FunctionTests extends TestSuite {
-  val tests = Tests {
-    'no_args - {
+class FunctionSpec extends FunSpec {
+  describe("function bindings") {
+    it("should bind to function with no args") {
       assert(Function.no_args() == 42)
     }
 
-    'void_arg - {
+    it("should bind to function with void args") {
       assert(Function.void_arg() == 1.5)
     }
 
-    'one_arg - {
+    it("should bind to function with one arg") {
       assert(Function.one_arg(42) == '*')
     }
 
-    'two_args - {
+    it("should bind to function with two arg") {
       val result = Function.two_args(3.14.toFloat, 1024)
       val string = fromCString(result.cast[CString])
       assert(string == "3.14 1024")
     }
 
-    'anonymous_args - {
+    it("should bind to function with anonymous args") {
       assert(Function.anonymous_args(1.5.toFloat, 42) == 43.5)
     }
 
-    'variadic_args - {
+    it("should bind to function with variadic args") {
       Zone { implicit z =>
         val result =
           Function.variadic_args(0.2, toCString("0123"), 1, 10, 100, 1000)

tests/samples/src/test/scala/org/scalanative/bindgen/samples/StructTests.scala → tests/samples/src/test/scala/org/scalanative/bindgen/samples/StructSpec.scala

@@ -1,12 +1,13 @@
 package org.scalanative.bindgen.samples
 
-import utest._
-import scala.scalanative.native._
+import org.scalatest.FunSpec
+import scalanative.native._
+
 import org.scalanative.bindgen.samples.Struct.implicits._
 
-object StructTests extends TestSuite {
-  val tests = Tests {
-    'point - {
+class StructSpec extends FunSpec {
+  describe("struct bindings") {
+    it("should provide field getters and setters") {
       val point = Struct.createPoint()
       assert(point.x == 10)
       assert(point.y == 20)
@@ -15,19 +16,19 @@ object StructTests extends TestSuite {
       assert(point.x == 11)
     }
 
-    'constructor - {
+    it("should provide constructors") {
       Zone { implicit Zone =>
+        val pointNoValue = Struct.struct_point()
+        assert(pointNoValue.x == 0)
+        assert(pointNoValue.y == 0)
+
         val point = Struct.struct_point(1, 2)
         assert(point.x == 1)
         assert(point.y == 2)
       }
     }
 
-    'bigStructSize - {
-      assert(Struct.getBigStructSize() == sizeof[Struct.struct_bigStruct])
-    }
-
-    'getFieldsOfInnerStruct - {
+    it("should provided field getters for inner structs") {
       Zone { implicit zone =>
         val points = Struct.struct_points()
         Struct.setPoints(points, 1, 2, 3, 4)
@@ -38,7 +39,7 @@ object StructTests extends TestSuite {
       }
     }
 
-    'setFieldsOfInnerStruct - {
+    it("should provided field setters for inner structs") {
       Zone { implicit zone =>
         val points = Struct.struct_points()
         points.p1.x = 1
@@ -52,7 +53,7 @@ object StructTests extends TestSuite {
       }
     }
 
-    'innerAnonymousStruct - {
+    it("should support anonymous structs") {
       type struct_anonymousStruct = CStruct2[CChar, CInt]
       Zone { implicit zone =>
         val anonymousStruct: Ptr[struct_anonymousStruct] =
@@ -71,7 +72,11 @@ object StructTests extends TestSuite {
       }
     }
 
-    'getFieldOfBigStruct - {
+    it("should match size of C memory layout for big structs") {
+      assert(Struct.getBigStructSize() == sizeof[Struct.struct_bigStruct])
+    }
+
+    it("should provide field getters for big structs") {
       Zone { implicit zone: Zone =>
         val structPtr = alloc[Struct.struct_bigStruct]
         for (value <- Seq(Long.MinValue, -1, 0, 1, Long.MaxValue)) {
@@ -100,7 +105,7 @@ object StructTests extends TestSuite {
       }
     }
 
-    'setFieldOfBigStruct - {
+    it("should provide field setters for big structs") {
       Zone { implicit zone: Zone =>
         val structPtr = alloc[Struct.struct_bigStruct]
         for (value <- Seq(Long.MinValue, -1, 0, 1, Long.MaxValue)) {

tests/samples/src/test/scala/org/scalanative/bindgen/samples/UnionTests.scala → tests/samples/src/test/scala/org/scalanative/bindgen/samples/UnionSpec.scala

@@ -1,16 +1,17 @@
 package org.scalanative.bindgen.samples
 
-import utest._
+import org.scalatest.FunSpec
 import scala.scalanative.native._
+
 import org.scalanative.bindgen.samples.Union.implicits._
 
-object UnionTests extends TestSuite {
-  val tests = Tests {
-    'sizeof - {
+class UnionSpec extends FunSpec {
+  describe("union bindings") {
+    it("should match size of C memory layout") {
       assert(Union.union_get_sizeof() == sizeof[Union.union_values])
     }
 
-    'get - {
+    it("should provide field getters") {
       Zone { implicit zone =>
         val unionPtr = alloc[Union.union_values]
 
@@ -56,7 +57,7 @@ object UnionTests extends TestSuite {
       }
     }
 
-    'set - {
+    it("should provide field setters") {
       Zone { implicit zone =>
         val unionPtr = alloc[Union.union_values]
 

tests/samples/src/test/scala/org/scalanative/bindgen/samples/VarDefineSpec.scala

@@ -0,0 +1,13 @@
+package org.scalanative.bindgen.samples
+
+import org.scalatest.FunSpec
+import scala.scalanative.native._
+
+class VarDefineSpec extends FunSpec {
+  describe("variable #define bindings") {
+    it("should have the value of the referenced variable") {
+      assert(VarDefine.A == 23)
+      assert(VarDefine.CONST_INT == 10)
+    }
+  }
+}