import okhttp3.internal.commonToString
import okhttp3.internal.commonValue
import okhttp3.internal.commonValues
import okhttp3.internal.headersCheckName
import okhttp3.internal.http.toHttpDateOrNull
import okhttp3.internal.http.toHttpDateString
import okhttp3.internal.unmodifiable
import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

/**
 * The header fields of a single HTTP message. Values are uninterpreted strings; use `Request` and

  }

  @Test
  @Throws(Exception::class)
  fun format() {
    assertThat(Date(0L).toHttpDateString()).isEqualTo("Thu, 01 Jan 1970 00:00:00 GMT")
    assertThat(Date(1402057830000L).toHttpDateString()).isEqualTo("Fri, 06 Jun 2014 12:30:30 GMT")
  }

  @Test
  @Throws(Exception::class)
  fun parseNonStandardStrings() {

        // trailing junk is ignored.
        return result
      }
    }
  }
  return null
}

/** Returns the string for this date. */

import java.util.regex.Pattern
import okhttp3.internal.UTC
import okhttp3.internal.canParseAsIpAddress
import okhttp3.internal.delimiterOffset
import okhttp3.internal.http.MAX_DATE
import okhttp3.internal.http.toHttpDateString
import okhttp3.internal.indexOfControlOrNonAscii
import okhttp3.internal.publicsuffix.PublicSuffixDatabase
import okhttp3.internal.toCanonicalHost
import okhttp3.internal.trimSubstring