swift-mirror/test/Interop/Cxx/stdlib/use-std-vector.swift

// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -enable-experimental-cxx-interop)
// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -enable-experimental-cxx-interop -Xcc -std=gnu++20)
//
// REQUIRES: executable_test
//
// Enable this everywhere once we have a solution for modularizing libstdc++: rdar://87654514
// REQUIRES: OS=macosx || OS=linux-gnu

import StdlibUnittest
import StdVector
import CxxStdlib

var StdVectorTestSuite = TestSuite("StdVector")

StdVectorTestSuite.test("init") {
    let v = Vector()
    expectEqual(v.size(), 0)
    expectTrue(v.empty())
}

StdVectorTestSuite.test("push back") {
    var v = Vector()
    let _42: CInt = 42
    v.push_back(_42)
    expectEqual(v.size(), 1)
    expectFalse(v.empty())
    expectEqual(v[0], 42)
}

func fill(vector v: inout Vector) {
    v.push_back(1)
    v.push_back(2)
    v.push_back(CInt(3))
}

StdVectorTestSuite.test("for loop") {
    var v = Vector()
    fill(vector: &v)

    var count: CInt = 1
    for e in v {
        expectEqual(e, count)
        count += 1
    }
    expectEqual(count, 4)
}

StdVectorTestSuite.test("map") {
    var v = Vector()
    fill(vector: &v)

    let a = v.map { $0 + 5 }
    expectEqual(a, [6, 7, 8])
}

runAllTests()