Add test for return type of <clinit> methods

Author: tamasvajk

java/ql/test/kotlin/library-tests/methods/clinit.expected

@@ -0,0 +1 @@
+| clinit.kt:0:0:0:0 | <clinit> | file:///usr/local/Cellar/kotlin/1.6.20/libexec/lib/kotlin-stdlib.jar/kotlin/Unit.class:0:0:0:0 | Unit |

java/ql/test/kotlin/library-tests/methods/clinit.kt

@@ -0,0 +1,3 @@
+package foo.bar
+
+var topLevelInt: Int = 0

java/ql/test/kotlin/library-tests/methods/clinit.ql

@@ -0,0 +1,5 @@
+import java
+
+from Method m
+where m.getName() = "<clinit>"
+select m, m.getReturnType()

java/ql/test/kotlin/library-tests/methods/exprs.expected

@@ -1,3 +1,17 @@
+| clinit.kt:3:1:3:24 | ...=... | AssignExpr |
+| clinit.kt:3:1:3:24 | ...=... | KtInitializerAssignExpr |
+| clinit.kt:3:1:3:24 | <set-?> | VarAccess |
+| clinit.kt:3:1:3:24 | ClinitKt | TypeAccess |
+| clinit.kt:3:1:3:24 | ClinitKt | TypeAccess |
+| clinit.kt:3:1:3:24 | ClinitKt | TypeAccess |
+| clinit.kt:3:1:3:24 | ClinitKt.topLevelInt | VarAccess |
+| clinit.kt:3:1:3:24 | ClinitKt.topLevelInt | VarAccess |
+| clinit.kt:3:1:3:24 | ClinitKt.topLevelInt | VarAccess |
+| clinit.kt:3:1:3:24 | Unit | TypeAccess |
+| clinit.kt:3:1:3:24 | int | TypeAccess |
+| clinit.kt:3:1:3:24 | int | TypeAccess |
+| clinit.kt:3:1:3:24 | int | TypeAccess |
+| clinit.kt:3:24:3:24 | 0 | IntegerLiteral |
 | methods2.kt:4:1:5:1 | Unit | TypeAccess |
 | methods2.kt:4:26:4:31 | int | TypeAccess |
 | methods2.kt:4:34:4:39 | int | TypeAccess |

java/ql/test/kotlin/library-tests/methods/methods.expected

@@ -1,4 +1,7 @@
 methods
+| clinit.kt:0:0:0:0 | ClinitKt | clinit.kt:0:0:0:0 | <clinit> | <clinit>() |  |
+| clinit.kt:0:0:0:0 | ClinitKt | clinit.kt:3:1:3:24 | getTopLevelInt | getTopLevelInt() | public, static |
+| clinit.kt:0:0:0:0 | ClinitKt | clinit.kt:3:1:3:24 | setTopLevelInt | setTopLevelInt(int) | public, static |
 | methods2.kt:0:0:0:0 | Methods2Kt | methods2.kt:4:1:5:1 | fooBarTopLevelMethod | fooBarTopLevelMethod(int,int) | public, static |
 | methods2.kt:7:1:10:1 | Class2 | methods2.kt:8:5:9:5 | fooBarClassMethod | fooBarClassMethod(int,int) | public |
 | methods3.kt:0:0:0:0 | Methods3Kt | methods3.kt:3:1:3:42 | fooBarTopLevelMethodExt | fooBarTopLevelMethodExt(int,int) | public, static |

java/ql/test/kotlin/library-tests/methods/parameters.expected

@@ -1,3 +1,4 @@
+| clinit.kt:3:1:3:24 | setTopLevelInt | clinit.kt:3:1:3:24 | <set-?> | 0 |
 | methods2.kt:4:1:5:1 | fooBarTopLevelMethod | methods2.kt:4:26:4:31 | x | 0 |
 | methods2.kt:4:1:5:1 | fooBarTopLevelMethod | methods2.kt:4:34:4:39 | y | 1 |
 | methods2.kt:8:5:9:5 | fooBarClassMethod | methods2.kt:8:27:8:32 | x | 0 |