Exception thrown when using number type with only minimum part of range validation specified

[cjakobsen]

Description
If a property is defined as a number and range validation is specified but only using the minimum property an exception is thrown during generation of the api.

To Reproduce
Steps to reproduce the behavior:

1. Modify the sample project to have the beflow definition for the Order type where myNumber only has minimum specified:
2. Run the generator
3. The following error is returned: "Cannot parse value as number (Parameter 'value')"

Expected behavior
Code is generated with range validation from specified minimum (1.1) to infinite.

Order definition

    Order:
      title: Order
      description: |-
        A single order.
        Hallo description with multiline and no ending dot
      type: object
      x-examples:
        MyExample:
          id: 123
          name: Hallo world
        MyExample2: {}
      properties:
        id:
          type: string
          format: uuid
        description:
          type: string
        myTime:
          type: string
          format: time
        myEmail:
          type: string
          format: email
          default: [email protected]
        myNullableDateTime:
          type: string
          format: date-time
          nullable: true
        myDateTime:
          type: string
          format: date-time
        myNumber:
          type: number
          minimum: 1.1
        myInteger:
          type: integer
          maximum: 50
          default: 15
        myBool:
          type: boolean
          description: MyBool is great
        myUri:
          type: string
          format: uri
          description: 'This is the good uri :-)'
        myByte:
          type: string
          format: byte
        myStringList:
          type: array
          description: 'Hallo myStringList desc :-)'
          items:
            type: string
        myLong:
          type: integer
          format: int64
          minimum: 10
          exclusiveMinimum: false
        deliveryAddress:
          $ref: '#/components/schemas/Address'

Exception details

   at Atc.CodeAnalysis.CSharp.SyntaxFactories.SyntaxLiteralExpressionFactory.Create(String value, SyntaxKind syntaxKind) in /_/src/Atc.CodeAnalysis.CSharp/SyntaxFactories/SyntaxLiteralExpressionFactory.cs:line 35
   at Atc.CodeAnalysis.CSharp.SyntaxFactories.SyntaxAttributeArgumentFactory.Create(Object attributeValue) in /_/src/Atc.CodeAnalysis.CSharp/SyntaxFactories/SyntaxAttributeArgumentFactory.cs:line 26
   at Atc.CodeAnalysis.CSharp.SyntaxFactories.SyntaxAttributeFactory.CreateWithOneItemWithTwoArgument(String attributeName, Object argumentValue1, Object argumentValue2) in /_/src/Atc.CodeAnalysis.CSharp/SyntaxFactories/SyntaxAttributeFactory.cs:line 68
   at Atc.CodeAnalysis.CSharp.SyntaxFactories.SyntaxAttributeFactory.CreateFromValidationAttribute(ValidationAttribute validationAttribute) in /_/src/Atc.CodeAnalysis.CSharp/SyntaxFactories/SyntaxAttributeFactory.cs:line 92
   at Atc.CodeAnalysis.CSharp.PropertyDeclarationSyntaxExtensions.AddValidationAttribute(PropertyDeclarationSyntax propertyDeclaration, ValidationAttribute validationAttribute) in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator\Extensions\PropertyDeclarationSyntaxExtensions.cs:line 99
   at Atc.CodeAnalysis.CSharp.PropertyDeclarationSyntaxExtensions.RangeAttributeDouble(PropertyDeclarationSyntax propertyDeclaration, OpenApiSchema schema) in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator\Extensions\PropertyDeclarationSyntaxExtensions.cs:line 311
   at Atc.CodeAnalysis.CSharp.PropertyDeclarationSyntaxExtensions.AddValidationAttributeForMinMaxIfRequired(PropertyDeclarationSyntax propertyDeclaration, OpenApiSchema schema) in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator\Extensions\PropertyDeclarationSyntaxExtensions.cs:line 190
   at Atc.Rest.ApiGenerator.SyntaxFactories.SyntaxPropertyDeclarationFactory.CreateAuto(KeyValuePair`2 schema, ISet`1 requiredProperties, Boolean useNullableReferenceTypes) in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator\SyntaxFactories\SyntaxPropertyDeclarationFactory.cs:line 115
   at Atc.Rest.ApiGenerator.SyntaxGenerators.Api.SyntaxGeneratorContractModel.GenerateCode() in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator\SyntaxGenerators\Api\SyntaxGeneratorContractModel.cs:line 138
   at Atc.Rest.ApiGenerator.SyntaxGenerators.Api.SyntaxGeneratorContractModels.GenerateSyntaxTrees() in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator\SyntaxGenerators\Api\SyntaxGeneratorContractModels.cs:line 69
   at Atc.Rest.ApiGenerator.Generators.ServerApiGenerator.GenerateContracts(List`1 operationSchemaMappings) in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator\Generators\ServerApiGenerator.cs:line 236
   at Atc.Rest.ApiGenerator.Generators.ServerApiGenerator.Generate() in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator\Generators\ServerApiGenerator.cs:line 51
   at Atc.Rest.ApiGenerator.Helpers.GenerateHelper.GenerateServerApi(String projectPrefixName, DirectoryInfo outputPath, DirectoryInfo outputTestPath, Tuple`3 apiDocument, ApiOptions apiOptions) in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator\Helpers\GenerateHelper.cs:line 79
   at Atc.Rest.ApiGenerator.CLI.Commands.GenerateServerApiCommand.OnExecute(CommandLineApplication configCmd) in D:\Work\GitHub\atc-rest-api-generator\src\Atc.Rest.ApiGenerator.CLI\Commands\GenerateServerApiCommand.cs:line 42