Fix cross-tests on Mac. (#2655)

backend.native/tests/build.gradle

@@ -2904,7 +2904,7 @@ kotlinNativeInterop {
         defFile 'interop/basics/ccallbacksAndVarargs.def'
     }
 
-    if (isMac()) {
+    if (isAppleTarget(project)) {
         objcSmoke {
             defFile 'interop/objc/objcSmoke.def'
             headers "$projectDir/interop/objc/smoke.h"
@@ -3012,34 +3012,29 @@ task interop_callbacksAndVarargs(type: RunInteropKonanTest) {
 
 task interop_echo_server(type: RunInteropKonanTest) {
     disabled = (project.testTarget == 'wasm32') // No interop for wasm yet.
-    if (!isMac()) {
-        // Not supported or not tested.
-        disabled = true
-    }
     run = false
     source = "interop/basics/echo_server.kt"
     interop = 'sockets'
 }
 
-if (isMac()) {
-    task interop_opengl_teapot(type: RunStandaloneKonanTest) {
-        dependsOnPlatformLibs(it as Task)
-        disabled = (project.testTarget == 'wasm32') ||    // No interop for wasm yet.
-                (project.testTarget == 'ios_x64')         // No GLUT in iOS
-        run = false
-        source = "interop/basics/opengl_teapot.kt"
-    }
+task interop_opengl_teapot(type: RunStandaloneKonanTest) {
+    disabled = !isAppleTarget(project) || (project.testTarget == 'ios_x64')  // No GLUT in iOS
+    dependsOnPlatformLibs(it as Task)
+    run = false
+    source = "interop/basics/opengl_teapot.kt"
+}
 
-    task interop_objc_smoke(type: RunInteropKonanTest) {
-        disabled = (project.testTarget == 'wasm32') // No interop for wasm yet.
-        goldValue = "84\nFoo\nHello, World!\nKotlin says: Hello, everybody!\nHello from Kotlin\n2, 1\n" +
-                "true\ntrue\n" +
-                "Global string\nAnother global string\nnull\nglobal object\n" +
-                "5\n" +
-                "String macro\n" +
-                "CFString macro\n" +
-                "Deallocated\nDeallocated\n"
+task interop_objc_smoke(type: RunInteropKonanTest) {
+    disabled = !isAppleTarget(project)
+    goldValue = "84\nFoo\nHello, World!\nKotlin says: Hello, everybody!\nHello from Kotlin\n2, 1\n" +
+            "true\ntrue\n" +
+            "Global string\nAnother global string\nnull\nglobal object\n" +
+            "5\n" +
+            "String macro\n" +
+            "CFString macro\n" +
+            "Deallocated\nDeallocated\n"
 
+    if (isAppleTarget(project)) {
         source = "interop/objc/smoke.kt"
         interop = 'objcSmoke'
 
@@ -3138,7 +3133,7 @@ task library_mismatch(type: RunStandaloneKonanTest) {
     goldValue = isWindows() ? messages.replaceAll('\\/', '\\\\') : messages
 }
 
-if (isMac() && project.testTarget != 'wasm32') {
+if (isAppleTarget(project)) {
     def target = ext.platformManager.targetByName(project.testTarget ?: 'host').name
 
     task testValuesFramework(type: FrameworkTest) {

backend.native/tests/interop/basics/echo_server.kt

@@ -21,7 +21,7 @@ fun main(args: Array<String>) {
         val serverAddr = alloc<sockaddr_in>()
 
         val listenFd = socket(AF_INET, SOCK_STREAM, 0)
-                .ensureUnixCallResult { it >= 0 }
+                .toInt().ensureUnixCallResult { it >= 0 }
 
         with(serverAddr) {
             memset(this.ptr, 0, sockaddr_in.size.convert())
@@ -31,24 +31,24 @@ fun main(args: Array<String>) {
         }
 
         bind(listenFd, serverAddr.ptr.reinterpret(), sockaddr_in.size.toUInt())
-                .ensureUnixCallResult { it == 0 }
+                .toInt().ensureUnixCallResult { it == 0 }
 
         listen(listenFd, 10)
-                .ensureUnixCallResult { it == 0 }
+                .toInt().ensureUnixCallResult { it == 0 }
 
         val commFd = accept(listenFd, null, null)
-                .ensureUnixCallResult { it >= 0 }
+                .toInt().ensureUnixCallResult { it >= 0 }
 
         while (true) {
             val length = read(commFd, buffer, bufferLength.convert())
-                    .ensureUnixCallResult { it >= 0 }
+                    .toInt().ensureUnixCallResult { it >= 0 }
 
-            if (length == 0L) {
+            if (length == 0) {
                 break
             }
 
             write(commFd, buffer, length.convert())
-                    .ensureUnixCallResult { it >= 0 }
+                    .toInt().ensureUnixCallResult { it >= 0 }
         }
     }
 }
@@ -67,10 +67,3 @@ inline fun Int.ensureUnixCallResult(predicate: (Int) -> Boolean): Int {
     }
     return this
 }
-
-inline fun Long.ensureUnixCallResult(predicate: (Long) -> Boolean): Long {
-    if (!predicate(this)) {
-        throwUnixError()
-    }
-    return this
-}

build.gradle

@@ -162,6 +162,13 @@ class PlatformInfo {
         return HostManager.hostIsLinux
     }
 
+    boolean isAppleTarget(Project project) {
+        def platformManager = project.rootProject.platformManager
+        def targetName = project.project.testTarget ?: 'host'
+        def target = platformManager.targetManager(targetName).target
+        return target.family == Family.IOS || target.family == Family.OSX
+    }
+
     Throwable unsupportedPlatformException() {
         return new TargetSupportException()
     }