import kotlinx.html.consumers.catch
import kotlinx.html.dom.append
import kotlinx.html.h1
import kotlinx.html.h2
import kotlinx.html.js.div
import org.junit.Test
import kotlin.browser.document
import kotlin.test.assertEquals

class TestExceptions {

    @Test fun `exception_handler_should_add_output`() {

        val container = document.body!!.append.catch { err ->

            div {
                +"ERROR: "
                +err.message!!
            }

        }.div {
            h1 {
                +" text "
                throw IllegalStateException("testing errors")
            }
            h2 {
                +" should be present "
            }
        }

        assertEquals(
                """<h1> text <div>ERROR: testing errors</div></h1><h2> should be present </h2>""",
                container.innerHTML.trimTagSpace())
    }

    fun String.trimTagSpace() = replace(">\\s+<".toRegex(), "><")
}