Use _ThreadLocalState.useLazyTensor in tests.

Author: bgogul

Tests/TensorFlowTests/LazyTensorEvaluationTests.swift

@@ -20,12 +20,12 @@ import CTensorFlow
 final class LazyTensorEvaluationTests: XCTestCase {
     override class func setUp() {
         super.setUp()
-        _RuntimeConfig.useLazyTensor = true
+        _ThreadLocalState.useLazyTensor = true
     }
 
     override class func tearDown() {
         super.tearDown()
-        _RuntimeConfig.useLazyTensor = false
+        _ThreadLocalState.useLazyTensor = false
     }
 
     func testSimpleOperations() {

Tests/TensorFlowTests/LazyTensorExplicitTraceTests.swift

@@ -20,12 +20,12 @@ import CTensorFlow
 final class LazyTensorExplicitTraceTests: XCTestCase {
     override class func setUp() {
         super.setUp()
-        _RuntimeConfig.useLazyTensor = true
+        _ThreadLocalState.useLazyTensor = true
     }
 
     override class func tearDown() {
         super.tearDown()
-        _RuntimeConfig.useLazyTensor = false
+        _ThreadLocalState.useLazyTensor = false
     }
 
     func testSingleInput() {

Tests/TensorFlowTests/LazyTensorTFFunctionBuilderTests.swift

@@ -19,12 +19,12 @@ import CTensorFlow
 final class LazyTensorTFFunctionBuilderTests : XCTestCase {
     override class func setUp() {
         super.setUp()
-        _RuntimeConfig.useLazyTensor = true
+        _ThreadLocalState.useLazyTensor = true
     }
 
     override class func tearDown() {
         super.tearDown()
-        _RuntimeConfig.useLazyTensor = false
+        _ThreadLocalState.useLazyTensor = false
     }
 
     func testSingletonInputs() {

Tests/TensorFlowTests/LazyTensorTraceTests.swift

@@ -20,12 +20,12 @@ import CTensorFlow
 final class LazyTensorTraceTests: XCTestCase {
     override class func setUp() {
         super.setUp()
-        _RuntimeConfig.useLazyTensor = true
+        _ThreadLocalState.useLazyTensor = true
     }
 
     override class func tearDown() {
         super.tearDown()
-        _RuntimeConfig.useLazyTensor = false
+        _ThreadLocalState.useLazyTensor = false
     }
 
     func testSingleLiveTensor() {