Pre-configure client

Sometimes you may want to reuse your HTTP Client configuration to avoid code duplication or to archive better maintainability of your code base.
Skrape{it} supports shared client configurations by default -- you just need to configure the client properties you want to reuse using the skrape{it} DSL without calling the response function. 
Calling the request function will create a Request object which can then be stored to a variable.
The DSL is design to behave like fluent API, which means it will always return the return value of the last thing that was called inside the skrape lambda function.
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val myPreConfiguredClient = skrape(HttpFetcher) {
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    request {
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        timeout = 10_000
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        headers = mapOf("some-custom-header" to "some-value")
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        followRedirects = true
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    }
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}
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​
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@Test
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fun `can use preconfigured client straight away`() {
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​
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    myPreConfiguredClient.response {
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        status { code toBe 200 }
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        headers.getValue("some-custom-header") toBe "some-value"
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    }
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}
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​
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@Test
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fun `can use preconfigured client but slightly modify`() {
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​
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    myPreConfiguredClient.apply {
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        request {
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            followRedirects = false
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        }
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    }.response {
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        status { code toBe 301 }
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        headers.getValue("some-custom-header") toBe "some-value"
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    }
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}
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