swift-mirror/test/1_stdlib/ArrayTraps.swift.gyb

// -*- swift -*-
// These tests should crash.
// RUN: rm -rf %t ; mkdir -p %t
// RUN: %S/../../utils/gyb -DRUN_TESTS= %s -o %t/ArrayTraps.swift
// RUN: xcrun -sdk %target-sdk-name clang++ -arch %target-cpu %S/Inputs/CatchCrashes.cpp -c -o %t/CatchCrashes.o
// RUN: %S/../../utils/line-directive %t/ArrayTraps.swift -- %target-build-swift %t/ArrayTraps.swift -Xlinker %t/CatchCrashes.o -o %t/a.out
// RUN: %S/../../utils/gyb -DRUN_TESTS="%target-run %t/a.out" -DSOURCE=%s %s > /dev/null
//
// CHECK: OK
// CHECK: CRASHED: SIG{{ILL|TRAP}}

// This file is gybbe'd twice, once to generate the test file, and
// once to run the tests.  The second time, the output is thrown away,
// but the list of tests is used to invoke the test executable
// repeatedly with different arguments.
import Foundation

// Interpret the command line arguments.
var arg = Process.arguments[1]

%{
  # A list of arguments that should be passed to successive
  # invocations of the executable, to run all the different tests.
  tests = [] 

  # We test for bounds-checking traps for both reading and writing
  # both single elements and slices of all three different array
  # types.
  arrayTypes = ('Array', 'ContiguousArray', 'Slice', '_UnitTestArray')

  def test(x = None):
    global Array
    global io
    tests.append(
      '%s%s.%s' % (
         Array, '.' + io if io else '', len(tests) if x is None else x))
    return 'if arg == "%s"' % tests[-1]

  def boundsTrap(index, exprToWrite):
    global io
    return 'println("OK")\n' + (
      'let x = a[%s]' % index 
       if io == 'read' else
      'a[%s] = %s' % (index, exprToWrite))
}%

% for Array in arrayTypes:
%   for io in ['read', 'write']:
${test('Bounds1')} {
  var a = ${Array}<Int>()
  ${boundsTrap(0,1)}
}

${test('Bounds2')} {
  var a = ${Array}<Int>()
  ${boundsTrap(100,1)}
}

${test('Bounds3')} {
  var a = ${Array}([ 10, 20, 30 ])
  ${boundsTrap(3,1)}
}

${test('PopFromEmpty')} {
  var a: ${Array}<Int> = []
  println("OK")
  a.removeLast()
}

${test('SliceBounds0')} {
  var a = ${Array}<Int>()
  ${boundsTrap('-1..<1','Slice()')}
}

${test('SliceBounds1')} {
  var a = ${Array}([1])
  ${boundsTrap('-1..<1','Slice()')}
}

${test('SliceBounds2')} {
  var a = ${Array}([1])
  ${boundsTrap('0..<2','Slice()')}
}

${test('SliceBounds2')} {
  var a = ${Array}([1])
  ${boundsTrap('1..<2','Slice()')}
}

%   end
%   io = ''

%   for index in -1, 2:
${test('Insert%s' % index)} {
  var a: ${Array}<Int> = [42]
  println("OK")
  a.insert(3, atIndex: ${index})
}
%   end

%   for index in -1, 1, 2:
${test('Remove%s' % index)} {
  var a: ${Array}<Int> = [42]
  println("OK")
  a.removeAtIndex(${index})
}
%   end
% end
% Array = 'Array'

class Base { }
class Derived : Base { }

${test('Downcast1')} {
  let ba: [Base] = [Derived(), Base()]
  let da = ba as! [Derived]
  let d0 = da[0]
  println("OK")
  let d1 = da[1]
}

${test('Downcast2')} {
  let a: [AnyObject] = ["String", 1]
  let sa = a as! [NSString]
  let s0 = sa[0]
  println("OK")
  let s1 = sa[1]
}

${test('UnsafeLength')} {
  var a = [42, 77, 88]
  
  if a.withUnsafeBufferPointer({ $0[0] }) == 42 {
    println("OK")
  }
  
  a.withUnsafeBufferPointer {
    UnsafeBufferPointer(start: $0.baseAddress, count: -1)
  }
}
println("BUSTED: should have crashed already")
exit(1)

%{
  if RUN_TESTS:
    from subprocess import call
    import sys
    exitCode = 0
    for t in tests:
      if call(
        '%s %s 2>&1 | FileCheck %s' % (RUN_TESTS, t, SOURCE), 
        shell=True
      ) != 0:
        exitCode = 1
        sys.stderr.write('%s failed\n' % t)
    exit(exitCode)
}%