chore: import upstream snapshot with attribution

dotnet/test/VectorData/Qdrant.UnitTests/QdrantCollectionCreateMappingTests.cs

@@ -0,0 +1,84 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+using Microsoft.Extensions.VectorData;
+using Microsoft.Extensions.VectorData.ProviderServices;
+using Qdrant.Client.Grpc;
+using Xunit;
+
+namespace Microsoft.SemanticKernel.Connectors.Qdrant.UnitTests;
+
+/// <summary>
+/// Contains tests for the <see cref="QdrantCollectionCreateMapping"/> class.
+/// </summary>
+public class QdrantCollectionCreateMappingTests
+{
+    [Fact]
+    public void MapSingleVectorCreatesVectorParams()
+    {
+        // Arrange.
+        var vectorProperty = new VectorPropertyModel("testvector", typeof(ReadOnlyMemory<float>)) { Dimensions = 4, DistanceFunction = DistanceFunction.DotProductSimilarity };
+
+        // Act.
+        var actual = QdrantCollectionCreateMapping.MapSingleVector(vectorProperty);
+
+        // Assert.
+        Assert.NotNull(actual);
+        Assert.Equal(Distance.Dot, actual.Distance);
+        Assert.Equal(4ul, actual.Size);
+    }
+
+    [Fact]
+    public void MapSingleVectorDefaultsToCosine()
+    {
+        // Arrange.
+        var vectorProperty = new VectorPropertyModel("testvector", typeof(ReadOnlyMemory<float>)) { Dimensions = 4 };
+
+        // Act.
+        var actual = QdrantCollectionCreateMapping.MapSingleVector(vectorProperty);
+
+        // Assert.
+        Assert.Equal(Distance.Cosine, actual.Distance);
+    }
+
+    [Fact]
+    public void MapSingleVectorThrowsForUnsupportedDistanceFunction()
+    {
+        // Arrange.
+        var vectorProperty = new VectorPropertyModel("testvector", typeof(ReadOnlyMemory<float>)) { Dimensions = 4, DistanceFunction = DistanceFunction.CosineDistance };
+
+        // Act and assert.
+        Assert.Throws<NotSupportedException>(() => QdrantCollectionCreateMapping.MapSingleVector(vectorProperty));
+    }
+
+    [Fact]
+    public void MapNamedVectorsCreatesVectorParamsMap()
+    {
+        // Arrange.
+        var vectorProperties = new VectorPropertyModel[]
+        {
+            new("testvector1", typeof(ReadOnlyMemory<float>))
+            {
+                Dimensions = 10,
+                DistanceFunction = DistanceFunction.EuclideanDistance,
+                StorageName = "storage_testvector1"
+            },
+            new("testvector2", typeof(ReadOnlyMemory<float>))
+            {
+                Dimensions = 20,
+                StorageName = "storage_testvector2"
+            }
+        };
+
+        // Act.
+        var actual = QdrantCollectionCreateMapping.MapNamedVectors(vectorProperties);
+
+        // Assert.
+        Assert.NotNull(actual);
+        Assert.Equal(2, actual.Map.Count);
+        Assert.Equal(10ul, actual.Map["storage_testvector1"].Size);
+        Assert.Equal(Distance.Euclid, actual.Map["storage_testvector1"].Distance);
+        Assert.Equal(20ul, actual.Map["storage_testvector2"].Size);
+        Assert.Equal(Distance.Cosine, actual.Map["storage_testvector2"].Distance);
+    }
+}