/* -----------------------------------------------------------------------------
Copyright 2019-2021,2023 Kevin P. Barry

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
----------------------------------------------------------------------------- */

// Author: Kevin P. Barry [ta0kira@gmail.com]

testcase "Argv checks" {
  success TestChecker
  args "arg1" "arg2" "arg3" "arg4"
}

unittest global {
  Int count <- Argv.global().size()
  \ count `Matches:with` CheckValue:equals(5)
  \ Argv.global().readAt(0) `Matches:with` CheckValue:equals("testcase")
  \ Argv.global().readAt(1) `Matches:with` CheckValue:equals("arg1")
  \ Argv.global().readAt(2) `Matches:with` CheckValue:equals("arg2")
  \ Argv.global().readAt(3) `Matches:with` CheckValue:equals("arg3")
  \ Argv.global().readAt(4) `Matches:with` CheckValue:equals("arg4")
}

unittest subSequence {
  ReadAt<String> argv <- Argv.global().subSequence(2, 2)
  Int count <- argv.size()
  \ count `Matches:with` CheckValue:equals(2)
  \ argv.readAt(0) `Matches:with` CheckValue:equals("arg2")
  \ argv.readAt(1) `Matches:with` CheckValue:equals("arg3")
}


testcase "Argv readAt out of bounds" {
  failure
  require "index 5"
}

unittest test {
  \ Argv.global().readAt(5)
}


testcase "Argv subSequence out of bounds" {
  failure
  require "index 5"
}

unittest test {
  \ Argv.global().subSequence(5, 1)
}


testcase "ErrorOr checks" {
  success TestChecker
}

unittest withValue {
  ErrorOr<Int> value <- ErrorOr:value<Int>(10)
  \ value.isError() `Matches:with` CheckValue:equals(false)
  \ value.getValue() `Matches:with` CheckValue:equals(10)
  \ value.tryValue() `Matches:with` CheckValue:equals(10)
}

unittest withError {
  ErrorOr<String> value <- ErrorOr:error("error message")
  \ value.isError() `Matches:with` CheckValue:equals(true)
  \ value.tryValue() `Matches:with` CheckValue:equals(empty?String)
  \ value.getError().formatted() `Matches:with` CheckValue:equals("error message")
}

unittest convertError {
  scoped {
    ErrorOr<String> error <- ErrorOr:error("error message")
  } in ErrorOr<Int> value <- error.convertError()
  \ value.getError().formatted() `Matches:with` CheckValue:equals("error message")
}


testcase "ErrorOr getError() crashes with value" {
  failure
  require "empty"
}

unittest test {
  ErrorOr<Int> value <- ErrorOr:value<Int>(10)
  \ value.getError()
}


testcase "ErrorOr getValue() crashes with error" {
  failure
  require "error message"
}

unittest test {
  ErrorOr<String> value <- ErrorOr:error("error message")
  \ value.getValue()
}


testcase "ErrorOr convertError() crashes with no error" {
  failure
  require "no error"
}

unittest test {
  ErrorOr<Int> value <- ErrorOr:value<Int>(10)
  \ value.convertError()
}


testcase "Void tests" {
  success TestChecker
}

unittest formatted {
  \ Void.default().formatted() `Matches:with` CheckValue:equals("Void")
}

unittest lessThan {
  \ Void.default() `Void.lessThan` Void.default() `Matches:with` CheckValue:equals(false)
}

unittest equals {
  \ Void.default() `Void.equals` Void.default() `Matches:with` CheckValue:equals(true)
}

unittest hashed {
  \ Void.default().duplicate().hashed() `Matches:with` CheckValue:equals(Void.default().hashed())
}


testcase "AlwaysEmpty tests" {
  success TestChecker
}

unittest conversions {
  ReadAt<Int>  read  <- AlwaysEmpty.default()
  WriteAt<Int> write <- AlwaysEmpty.default()
}

unittest size {
  \ AlwaysEmpty.default().size() `Matches:with` CheckValue:equals(0)
}

unittest duplicate {
  \ AlwaysEmpty.default().duplicate().size() `Matches:with` CheckValue:equals(0)
}

unittest defaultOrder {
  traverse (AlwaysEmpty.default().defaultOrder() -> _) {
    fail("expected empty")
  }
}


testcase "AlwaysEmpty.readAt fails" {
  failure
  require "empty"
}

unittest readAt {
  \ AlwaysEmpty.default().readAt(0)
}


testcase "AlwaysEmpty.writeAt fails" {
  failure
  require "empty"
}

unittest readAt {
  \ AlwaysEmpty.default().writeAt(0, 123)
}