diff --git a/kmath-tensors/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleTensor.kt b/kmath-tensors/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleTensor.kt
index d808637c7..bebaed32f 100644
--- a/kmath-tensors/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleTensor.kt
+++ b/kmath-tensors/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleTensor.kt
@@ -23,6 +23,32 @@ import kotlin.test.assertTrue
 
 internal class TestDoubleTensor {
 
+    @Test
+    fun testFullLike() = DoubleTensorAlgebra {
+        val shape = intArrayOf(2, 3)
+        val buffer = doubleArrayOf(1.0, 2.0, 3.0, 4.0, 5.0, 6.0)
+        val tensor = DoubleTensor(shape, buffer)
+        val value = 12.5
+        assertTrue { tensor.fullLike(value) eq DoubleTensor(shape, buffer.map { value }.toDoubleArray() ) }
+    }
+
+    @Test
+    fun testOnesLike() = DoubleTensorAlgebra {
+        val shape = intArrayOf(2, 3)
+        val buffer = doubleArrayOf(1.0, 2.0, 3.0, 4.0, 5.0, 6.0)
+        val tensor = DoubleTensor(shape, buffer)
+        assertTrue { tensor.onesLike() eq DoubleTensor(shape, buffer.map { 1.0 }.toDoubleArray() ) }
+    }
+
+    @Test
+    fun testRowsByIndices() = DoubleTensorAlgebra {
+        val shape = intArrayOf(2, 2)
+        val buffer = doubleArrayOf(1.0, 2.0, -3.0, 4.0)
+        val tensor = fromArray(shape, buffer)
+        assertTrue { tensor.rowsByIndices(intArrayOf(0)) eq DoubleTensor(intArrayOf(1, 2), doubleArrayOf(1.0, 2.0)) }
+        assertTrue { tensor.rowsByIndices(intArrayOf(0, 1)) eq tensor }
+    }
+
     @Test
     fun testValue() = DoubleTensorAlgebra {
         val value = 12.5