Swift: add function call autoclosure tests

Author: rdmarsh2

swift/ql/test/library-tests/ast/PrintAst.expected

@@ -3338,6 +3338,24 @@ cfg.swift:
 #  545|       getElse(): [BraceStmt] { ... }
 #  546|         getElement(0): [ReturnStmt] return ...
 #  546|           getResult(): [IntegerLiteralExpr] 0
+#  550| [NamedFunction] usesAutoclosure(_:)
+#  550|     InterfaceType = (@autoclosure () -> Int) -> Int
+#  550|   getParam(0): [ParamDecl] expr
+#  550|       Type = () -> Int
+#  550|   getBody(): [BraceStmt] { ... }
+#  551|     getElement(0): [ReturnStmt] return ...
+#  551|       getResult(): [CallExpr] call to ...
+#  551|         getFunction(): [DeclRefExpr] expr
+#  554| [NamedFunction] autoclosureTest()
+#  554|     InterfaceType = () -> ()
+#  554|   getBody(): [BraceStmt] { ... }
+#  555|     getElement(0): [CallExpr] call to usesAutoclosure(_:)
+#  555|       getFunction(): [DeclRefExpr] usesAutoclosure(_:)
+#  555|       getArgument(0): [Argument] : { ... }
+#  555|         getExpr(): [AutoClosureExpr] { ... }
+#  555|           getBody(): [BraceStmt] { ... }
+#  555|             getElement(0): [ReturnStmt] return ...
+#  555|               getResult(): [IntegerLiteralExpr] 1
 declarations.swift:
 #    1| [StructDecl] Foo
 #    2|   getMember(0): [PatternBindingDecl] var ... = ...

swift/ql/test/library-tests/ast/cfg.swift

@@ -546,3 +546,11 @@ func testNilCoalescing2(x: Bool?) -> Int {
     return 0
   }
 }
+
+func usesAutoclosure(_ expr: @autoclosure () -> Int) -> Int {
+  return expr()
+}
+
+func autoclosureTest() {
+  usesAutoclosure(1)
+}

swift/ql/test/library-tests/controlflow/graph/Cfg.expected

@@ -6276,3 +6276,46 @@ cfg.swift:
 
 #  546| 0
 #-----|  -> return ...
+
+#  550| enter usesAutoclosure(_:)
+#-----|  -> usesAutoclosure(_:)
+
+#  550| exit usesAutoclosure(_:)
+
+#  550| exit usesAutoclosure(_:) (normal)
+#-----|  -> exit usesAutoclosure(_:)
+
+#  550| usesAutoclosure(_:)
+#-----|  -> expr
+
+#  550| expr
+#-----|  -> expr
+
+#  551| return ...
+#-----| return -> exit usesAutoclosure(_:) (normal)
+
+#  551| expr
+#-----|  -> call to ...
+
+#  551| call to ...
+#-----|  -> return ...
+
+#  554| autoclosureTest()
+#-----|  -> usesAutoclosure(_:)
+
+#  554| enter autoclosureTest()
+#-----|  -> autoclosureTest()
+
+#  554| exit autoclosureTest()
+
+#  554| exit autoclosureTest() (normal)
+#-----|  -> exit autoclosureTest()
+
+#  555| usesAutoclosure(_:)
+#-----|  -> { ... }
+
+#  555| call to usesAutoclosure(_:)
+#-----|  -> exit autoclosureTest() (normal)
+
+#  555| { ... }
+#-----|  -> call to usesAutoclosure(_:)

swift/ql/test/library-tests/controlflow/graph/cfg.swift

@@ -546,3 +546,11 @@ func testNilCoalescing2(x: Bool?) -> Int {
     return 0
   }
 }
+
+func usesAutoclosure(_ expr: @autoclosure () -> Int) -> Int {
+  return expr()
+}
+
+func autoclosureTest() {
+  usesAutoclosure(1)
+}

swift/ql/test/library-tests/dataflow/dataflow/LocalFlow.expected

@@ -1091,3 +1091,5 @@
 | test.swift:871:24:871:31 | [...] | test.swift:871:24:871:31 | [...] |
 | test.swift:872:28:872:31 | [...] | test.swift:872:28:872:31 | [...] |
 | test.swift:873:21:873:31 | [...] | test.swift:873:21:873:31 | [...] |
+| test.swift:876:22:876:49 | SSA def(expr) | test.swift:877:13:877:13 | expr |
+| test.swift:876:22:876:49 | expr | test.swift:876:22:876:49 | SSA def(expr) |

swift/ql/test/library-tests/dataflow/dataflow/test.swift

@@ -872,3 +872,11 @@ func testVarargsCaller() {
     testVarargs2(source(), 2, 3)
     testVarargs3(1, 2, source())
 }
+
+func usesAutoclosure(_ expr: @autoclosure () -> Int) {
+  sink(arg: expr())
+}
+
+func autoclosureTest() {
+  usesAutoclosure(source())
+}