CSHARP-5391: Add spec test for $$type operator with "number" (#1739)

specifications/unified-test-format/tests/valid-pass/operator-type-number_alias.json

@@ -0,0 +1,174 @@
+{
+  "description": "operator-type-number_alias",
+  "schemaVersion": "1.0",
+  "createEntities": [
+    {
+      "client": {
+        "id": "client0"
+      }
+    },
+    {
+      "database": {
+        "id": "database0",
+        "client": "client0",
+        "databaseName": "test"
+      }
+    },
+    {
+      "collection": {
+        "id": "collection0",
+        "database": "database0",
+        "collectionName": "coll0"
+      }
+    }
+  ],
+  "initialData": [
+    {
+      "collectionName": "coll0",
+      "databaseName": "test",
+      "documents": []
+    }
+  ],
+  "tests": [
+    {
+      "description": "type number alias matches int32",
+      "operations": [
+        {
+          "name": "insertOne",
+          "object": "collection0",
+          "arguments": {
+            "document": {
+              "_id": 1,
+              "x": {
+                "$numberInt": "2147483647"
+              }
+            }
+          }
+        },
+        {
+          "name": "find",
+          "object": "collection0",
+          "arguments": {
+            "filter": {
+              "_id": 1
+            },
+            "limit": 1
+          },
+          "expectResult": [
+            {
+              "_id": 1,
+              "x": {
+                "$$type": "number"
+              }
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "description": "type number alias matches int64",
+      "operations": [
+        {
+          "name": "insertOne",
+          "object": "collection0",
+          "arguments": {
+            "document": {
+              "_id": 1,
+              "x": {
+                "$numberLong": "9223372036854775807"
+              }
+            }
+          }
+        },
+        {
+          "name": "find",
+          "object": "collection0",
+          "arguments": {
+            "filter": {
+              "_id": 1
+            },
+            "limit": 1
+          },
+          "expectResult": [
+            {
+              "_id": 1,
+              "x": {
+                "$$type": "number"
+              }
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "description": "type number alias matches double",
+      "operations": [
+        {
+          "name": "insertOne",
+          "object": "collection0",
+          "arguments": {
+            "document": {
+              "_id": 1,
+              "x": {
+                "$numberDouble": "2.71828"
+              }
+            }
+          }
+        },
+        {
+          "name": "find",
+          "object": "collection0",
+          "arguments": {
+            "filter": {
+              "_id": 1
+            },
+            "limit": 1
+          },
+          "expectResult": [
+            {
+              "_id": 1,
+              "x": {
+                "$$type": "number"
+              }
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "description": "type number alias matches decimal128",
+      "operations": [
+        {
+          "name": "insertOne",
+          "object": "collection0",
+          "arguments": {
+            "document": {
+              "_id": 1,
+              "x": {
+                "$numberDecimal": "3.14159"
+              }
+            }
+          }
+        },
+        {
+          "name": "find",
+          "object": "collection0",
+          "arguments": {
+            "filter": {
+              "_id": 1
+            },
+            "limit": 1
+          },
+          "expectResult": [
+            {
+              "_id": 1,
+              "x": {
+                "$$type": "number"
+              }
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}

specifications/unified-test-format/tests/valid-pass/operator-type-number_alias.yml

@@ -0,0 +1,61 @@
+description: operator-type-number_alias
+
+schemaVersion: "1.0"
+
+createEntities:
+  - client:
+      id: &client0 client0
+  - database:
+      id: &database0 database0
+      client: *client0
+      databaseName: &database0Name test
+  - collection:
+      id: &collection0 collection0
+      database: *database0
+      collectionName: &collection0Name coll0
+
+initialData:
+  - collectionName: *collection0Name
+    databaseName: *database0Name
+    documents: []
+
+tests:
+  -
+    description: type number alias matches int32
+    operations:
+      - name: insertOne
+        object: *collection0
+        arguments:
+          document: { _id: 1, x: { $numberInt: "2147483647" } }
+      - &find
+        name: find
+        object: *collection0
+        arguments:
+          filter: { _id: 1 }
+          limit: 1
+        expectResult:
+          - { _id: 1, x: { $$type: "number" } }
+  -
+    description: type number alias matches int64
+    operations:
+      - name: insertOne
+        object: *collection0
+        arguments:
+          document: { _id: 1, x: { $numberLong: "9223372036854775807" } }
+      - *find
+  -
+    description: type number alias matches double
+    operations:
+      - name: insertOne
+        object: *collection0
+        arguments:
+          document: { _id: 1, x: { $numberDouble: "2.71828" } }
+      - *find
+  -
+    description: type number alias matches decimal128
+    operations:
+      - name: insertOne
+        object: *collection0
+        arguments:
+          document: { _id: 1, x: { $numberDecimal: "3.14159" } }
+      - *find

tests/MongoDB.Driver.Tests/UnifiedTestOperations/Matchers/UnifiedValueMatcher.cs

@@ -14,6 +14,7 @@
 */
 
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using FluentAssertions;
@@ -26,6 +27,8 @@ namespace MongoDB.Driver.Tests.UnifiedTestOperations.Matchers
 {
     public class UnifiedValueMatcher
     {
+        private static readonly List<string> __numericTypes = ["int", "long", "double", "decimal"];
+
         private UnifiedEntityMap _entityMap;
 
         public UnifiedValueMatcher(UnifiedEntityMap entityMap)
@@ -197,7 +200,8 @@ namespace MongoDB.Driver.Tests.UnifiedTestOperations.Matchers
 
             if (expectedTypes.IsString)
             {
-                expectedTypeNames = new List<string> { expectedTypes.AsString };
+                var expectedType = expectedTypes.AsString;
+                expectedTypeNames = expectedType == "number" ? __numericTypes : [expectedType];
             }
             else if (expectedTypes.IsBsonArray)
             {