--- /dev/null
+package net.pterodactylus.sone.test
+
+import net.pterodactylus.util.web.*
+import org.hamcrest.*
+
+fun hasHeader(name: String, value: String) = object : TypeSafeDiagnosingMatcher<Header>() {
+ override fun matchesSafely(item: Header, mismatchDescription: Description) =
+ compare(item.name, { it.equals(name, ignoreCase = true) }) { mismatchDescription.appendText("name is ").appendValue(it) }
+ ?: compare(item.hasValue(value), { it }) { mismatchDescription.appendText("does not have value ").appendValue(value) }
+ ?: true
+
+ override fun describeTo(description: Description) {
+ description.appendText("name is ").appendValue(name)
+ .appendText(", value is ").appendValue(value)
+ }
+}
+
+fun <T : Any> compare(value: T, comparison: (T) -> Boolean, onError: (T) -> Unit) =
+ false.takeUnless { comparison(value) }
+ ?.also { onError(value) }
+