[orx-gradient] Move DescribeSpec based tests to jvmTest

orx-gradient-descent/src/jvmTest/kotlin/TestDot.kt

@@ -0,0 +1,26 @@
+import io.kotest.core.spec.style.DescribeSpec
+import io.kotest.matchers.equals.shouldBeEqual
+import org.openrndr.extra.gradientdescent.dot
+
+
+class TestDot : DescribeSpec({
+    describe("some vectors") {
+        val a = doubleArrayOf(10.0)
+        val b = doubleArrayOf(4.0)
+        dot(a, b).shouldBeEqual(40.0)
+    }
+
+    describe("a matrix and a vector") {
+        val a = arrayOf(doubleArrayOf(10.0))
+        val b = doubleArrayOf(1.0)
+        val d = dot(a, b)
+        d[0].shouldBeEqual(10.0)
+    }
+
+    describe("another matrix and a vector") {
+        val a = arrayOf(doubleArrayOf(1.0))
+        val b = doubleArrayOf(19.99999999995339)
+        val d = dot(a, b)
+        d[0].shouldBeEqual(19.99999999995339)
+    }
+})