stdlib tests: add import statements to prevent unresolved symbols when compiling StdlibUnittest with -sil-serialize-all.

rdar://problem/18917405

test/1_stdlib/ArrayTraps.swift.gyb

@@ -12,6 +12,13 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 %{
 # We test for bounds-checking traps for both reading and writing
 # both single elements and slices of all three different array

test/1_stdlib/CharacterTraps.swift

@@ -9,6 +9,14 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
+
 var CharacterTraps = TestSuite("CharacterTraps")
 
 CharacterTraps.test("CharacterFromEmptyString")

test/1_stdlib/DictionaryTraps.swift

@@ -13,6 +13,13 @@
 import StdlibUnittest
 import Foundation
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 struct NotBridgedKeyTy : Equatable, Hashable {
   init(_ value: Int) {
     self.value = value

test/1_stdlib/DictionaryUnchecked.swift

@@ -6,6 +6,13 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 var DictionaryUnchecked = TestSuite("DictionaryUnchecked")
 
 DictionaryUnchecked.test("noCseOnInit") {

test/1_stdlib/Index.swift.gyb

@@ -18,6 +18,13 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 struct DistanceToTest {
   let startIndex: Int
   let endIndex: Int

test/1_stdlib/IntervalTraps.swift

@@ -20,6 +20,13 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 var IntervalTraps = TestSuite("IntervalTraps")
 
 IntervalTraps.test("HalfOpen")

test/1_stdlib/OptionalTraps.swift

@@ -11,6 +11,13 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 func returnNil() -> AnyObject? {
   return _opaqueIdentity(nil as AnyObject?)
 }

test/1_stdlib/RangeTraps.swift

@@ -20,6 +20,13 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 var RangeTraps = TestSuite("RangeTraps")
 
 RangeTraps.test("HalfOpen")

test/1_stdlib/SetTraps.swift

@@ -13,6 +13,13 @@
 import StdlibUnittest
 import Foundation
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 struct NotBridgedKeyTy : Equatable, Hashable {
   init(_ value: Int) {
     self.value = value

test/1_stdlib/StringTraps.swift

@@ -12,6 +12,13 @@
 import StdlibUnittest
 import Foundation
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 var StringTraps = TestSuite("StringTraps")
 
 StringTraps.test("startIndex/predecessor")

test/1_stdlib/tgmath_optimized.swift

@@ -8,6 +8,13 @@
 import Darwin
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 var TGMathTestSuite = TestSuite("tgmath")
 
 let minusOneDouble = Double(-1.0)

validation-test/stdlib/ArrayBridging.swift

@@ -14,6 +14,14 @@ import StdlibUnittest
 import Foundation
 import SlurpFastEnumeration
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+import SwiftPrivatePthreadExtras
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 struct ArrayBridge_objectAtIndex_RaceTest : RaceTestWithPerTrialDataType {
   class RaceData {
     var nsa: NSArray

validation-test/stdlib/Assert.swift

@@ -11,6 +11,15 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+import SwiftPrivatePthreadExtras
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
+
 //===---
 // Tests.
 //===---

validation-test/stdlib/AtomicInt.swift

@@ -8,6 +8,14 @@
 import SwiftPrivate
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+import SwiftPrivatePthreadExtras
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 final class HeapBool {
   var value: Bool
   init(_ value: Bool) {

validation-test/stdlib/DictionaryBridging.swift

@@ -13,6 +13,14 @@ import StdlibUnittest
 import Foundation
 import SlurpFastEnumeration
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+import SwiftPrivatePthreadExtras
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 struct DictionaryBridge_objectForKey_RaceTest : RaceTestWithPerTrialDataType {
   class RaceData {
     var nsd: NSDictionary

validation-test/stdlib/FixedPointArithmeticTraps.swift.gyb

@@ -10,6 +10,13 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 // Note: in this file, we need to go through opaque functions to load
 // constants.  This is to to check runtime behaviour and ensure the constant is
 // not folded.

validation-test/stdlib/FloatingPointConversionTraps.swift.gyb

@@ -10,6 +10,13 @@
 
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 %{
 
 from SwiftIntTypes import *

validation-test/stdlib/HashingAvalanche.swift

@@ -5,6 +5,13 @@
 import SwiftPrivate
 import StdlibUnittest
 
+// Also import modules which are used by StdlibUnittest internally. This is
+// needed to link all required libraries in case we serialize StdlibUnittest.
+import SwiftPrivate
+#if _runtime(_ObjC)
+import ObjectiveC
+#endif
+
 var HashingTestSuite = TestSuite("Hashing")
 
 func avalancheTest(bits: Int, _ hashUnderTest: (UInt64) -> UInt64, _ pValue: Double) {