add tests for timeout handling (#74)

Adding some tests for timeout handling. Also tests the use of `OpenAPI.Clients.with_timeout` method provided to invoke OpenAPI client side APIs with a timeout value.

Author: tanmaykm

test/client/timeouttest/TimeoutTestClient/.openapi-generator-ignore

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+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md

test/client/timeouttest/TimeoutTestClient/.openapi-generator/FILES

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+.openapi-generator-ignore
+README.md
+docs/DefaultApi.md
+docs/DelayresponseGet200Response.md
+src/TimeoutTestClient.jl
+src/apis/api_DefaultApi.jl
+src/modelincludes.jl
+src/models/model_DelayresponseGet200Response.jl

test/client/timeouttest/TimeoutTestClient/.openapi-generator/VERSION

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+7.2.0

test/client/timeouttest/TimeoutTestClient/README.md

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+# Julia API client for TimeoutTestClient
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+## Overview
+This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.  By using the [openapi-spec](https://openapis.org) from a remote server, you can easily generate an API client.
+
+- API version: 1.0.0
+- Build package: org.openapitools.codegen.languages.JuliaClientCodegen
+
+
+## Installation
+Place the Julia files generated under the `src` folder in your Julia project. Include TimeoutTestClient.jl in the project code.
+It would include the module named TimeoutTestClient.
+
+Documentation is generated as markdown files under the `docs` folder. You can include them in your project documentation.
+Documentation is also embedded in Julia which can be used with a Julia specific documentation generator.
+
+## API Endpoints
+
+Class | Method
+------------ | -------------
+*DefaultApi* | [**delayresponse_get**](docs/DefaultApi.md#delayresponse_get)<br/>**GET** /delayresponse<br/>Delay Response Endpoint
+
+
+## Models
+
+ - [DelayresponseGet200Response](docs/DelayresponseGet200Response.md)
+
+
+<a id="authorization"></a>
+## Authorization
+Endpoints do not require authorization.
+
+
+## Author
+
+
+

test/client/timeouttest/TimeoutTestClient/docs/DefaultApi.md

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+# DefaultApi
+
+All URIs are relative to *http://localhost*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**delayresponse_get**](DefaultApi.md#delayresponse_get) | **GET** /delayresponse | Delay Response Endpoint
+
+
+# **delayresponse_get**
+> delayresponse_get(_api::DefaultApi, delay_seconds::Int64; _mediaType=nothing) -> DelayresponseGet200Response, OpenAPI.Clients.ApiResponse <br/>
+> delayresponse_get(_api::DefaultApi, response_stream::Channel, delay_seconds::Int64; _mediaType=nothing) -> Channel{ DelayresponseGet200Response }, OpenAPI.Clients.ApiResponse
+
+Delay Response Endpoint
+
+### Required Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **_api** | **DefaultApi** | API context | 
+**delay_seconds** | **Int64**| Number of seconds to delay the response | [default to nothing]
+
+### Return type
+
+[**DelayresponseGet200Response**](DelayresponseGet200Response.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#api-endpoints) [[Back to Model list]](../README.md#models) [[Back to README]](../README.md)
+

test/client/timeouttest/TimeoutTestClient/docs/DelayresponseGet200Response.md

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+# DelayresponseGet200Response
+
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**delay_seconds** | **String** |  | [optional] [default to nothing]
+
+
+[[Back to Model list]](../README.md#models) [[Back to API list]](../README.md#api-endpoints) [[Back to README]](../README.md)
+
+

test/client/timeouttest/TimeoutTestClient/src/TimeoutTestClient.jl

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+# This file was generated by the Julia OpenAPI Code Generator
+# Do not modify this file directly. Modify the OpenAPI specification instead.
+
+module TimeoutTestClient
+
+using Dates, TimeZones
+using OpenAPI
+using OpenAPI.Clients
+
+const API_VERSION = "1.0.0"
+
+include("modelincludes.jl")
+
+include("apis/api_DefaultApi.jl")
+
+end # module TimeoutTestClient

test/client/timeouttest/TimeoutTestClient/src/apis/api_DefaultApi.jl

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+# This file was generated by the Julia OpenAPI Code Generator
+# Do not modify this file directly. Modify the OpenAPI specification instead.
+
+struct DefaultApi <: OpenAPI.APIClientImpl
+    client::OpenAPI.Clients.Client
+end
+
+"""
+The default API base path for APIs in `DefaultApi`.
+This can be used to construct the `OpenAPI.Clients.Client` instance.
+"""
+basepath(::Type{ DefaultApi }) = "http://localhost"
+
+const _returntypes_delayresponse_get_DefaultApi = Dict{Regex,Type}(
+    Regex("^" * replace("200", "x"=>".") * "\$") => DelayresponseGet200Response,
+)
+
+function _oacinternal_delayresponse_get(_api::DefaultApi, delay_seconds::Int64; _mediaType=nothing)
+    OpenAPI.validate_param("delay_seconds", "delayresponse_get", :minimum, delay_seconds, 0, false)
+
+    _ctx = OpenAPI.Clients.Ctx(_api.client, "GET", _returntypes_delayresponse_get_DefaultApi, "/delayresponse", [])
+    OpenAPI.Clients.set_param(_ctx.query, "delay_seconds", delay_seconds)  # type Int64
+    OpenAPI.Clients.set_header_accept(_ctx, ["application/json", ])
+    OpenAPI.Clients.set_header_content_type(_ctx, (_mediaType === nothing) ? [] : [_mediaType])
+    return _ctx
+end
+
+@doc raw"""Delay Response Endpoint
+
+Params:
+- delay_seconds::Int64 (required)
+
+Return: DelayresponseGet200Response, OpenAPI.Clients.ApiResponse
+"""
+function delayresponse_get(_api::DefaultApi, delay_seconds::Int64; _mediaType=nothing)
+    _ctx = _oacinternal_delayresponse_get(_api, delay_seconds; _mediaType=_mediaType)
+    return OpenAPI.Clients.exec(_ctx)
+end
+
+function delayresponse_get(_api::DefaultApi, response_stream::Channel, delay_seconds::Int64; _mediaType=nothing)
+    _ctx = _oacinternal_delayresponse_get(_api, delay_seconds; _mediaType=_mediaType)
+    return OpenAPI.Clients.exec(_ctx, response_stream)
+end
+
+export delayresponse_get

test/client/timeouttest/TimeoutTestClient/src/modelincludes.jl

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+# This file was generated by the Julia OpenAPI Code Generator
+# Do not modify this file directly. Modify the OpenAPI specification instead.
+
+include("models/model_DelayresponseGet200Response.jl")

test/client/timeouttest/TimeoutTestClient/src/models/model_DelayresponseGet200Response.jl

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+# This file was generated by the Julia OpenAPI Code Generator
+# Do not modify this file directly. Modify the OpenAPI specification instead.
+
+
+@doc raw"""_delayresponse_get_200_response
+
+    DelayresponseGet200Response(;
+        delay_seconds=nothing,
+    )
+
+    - delay_seconds::String
+"""
+Base.@kwdef mutable struct DelayresponseGet200Response <: OpenAPI.APIModel
+    delay_seconds::Union{Nothing, String} = nothing
+
+    function DelayresponseGet200Response(delay_seconds, )
+        OpenAPI.validate_property(DelayresponseGet200Response, Symbol("delay_seconds"), delay_seconds)
+        return new(delay_seconds, )
+    end
+end # type DelayresponseGet200Response
+
+const _property_types_DelayresponseGet200Response = Dict{Symbol,String}(Symbol("delay_seconds")=>"String", )
+OpenAPI.property_type(::Type{ DelayresponseGet200Response }, name::Symbol) = Union{Nothing,eval(Base.Meta.parse(_property_types_DelayresponseGet200Response[name]))}
+
+function check_required(o::DelayresponseGet200Response)
+    true
+end
+
+function OpenAPI.validate_property(::Type{ DelayresponseGet200Response }, name::Symbol, val)
+end