From 1056fc7200b5fbbb03b75c66ca09c30483f12e5c Mon Sep 17 00:00:00 2001
From: Roland Grinis <roland.grinis@grinisrit.com>
Date: Fri, 26 Mar 2021 13:48:59 +0000
Subject: [PATCH] Test for scalar product

---
 .../kmath/tensors/core/TestDoubleLinearOpsAlgebra.kt   | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/kmath-core/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleLinearOpsAlgebra.kt b/kmath-core/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleLinearOpsAlgebra.kt
index 2da79382f..d77f33f9d 100644
--- a/kmath-core/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleLinearOpsAlgebra.kt
+++ b/kmath-core/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleLinearOpsAlgebra.kt
@@ -70,4 +70,14 @@ class TestDoubleLinearOpsTensorAlgebra {
         assertTrue { invTensor.shape contentEquals expectedShape }
         assertTrue { invTensor.buffer.array().epsEqual(expectedBuffer) }
     }
+
+    @Test
+    fun testScalarProduct() = DoubleLinearOpsTensorAlgebra {
+        val a = fromArray(intArrayOf(3), doubleArrayOf(1.8,2.5, 6.8))
+        val b = fromArray(intArrayOf(3), doubleArrayOf(5.5,2.6, 6.4))
+        DoubleReduceOpsTensorAlgebra {
+            assertEquals(a.dot(b).value(), 59.92)
+        }
+
+    }
 }