Add test for expected filenames

java/ql/test/kotlin/library-tests/files/otherfile.kt

@@ -0,0 +1,3 @@
+package main
+
+class DefinedOtherFile<T> { }

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

@@ -0,0 +1,7 @@
+| otherfile.kt:3:1:3:29 | other | Object | Object.class | 0 |
+| test.kt:7:3:7:11 | b | String | String.class | 0 |
+| test.kt:8:3:8:24 | c | List<String> | List.class | 0 |
+| test.kt:9:3:9:28 | d | List<? extends String> | List.class | 0 |
+| test.kt:10:3:10:24 | e | DefinedHere<String> | test.kt | 14 |
+| test.kt:11:3:11:29 | f | DefinedOtherFile<String> | otherfile.kt | 3 |
+| test.kt:14:1:14:24 | other | Object | Object.class | 0 |

java/ql/test/kotlin/library-tests/files/test.kt

@@ -0,0 +1,14 @@
+package main
+
+import kotlin.collections.MutableList
+
+fun test(
+  a: Int,
+  b: String,
+  c: MutableList<String>,
+  d: MutableList<out String>,
+  e: DefinedHere<String>,
+  f: DefinedOtherFile<String>
+) { }
+
+class DefinedHere<T> { }

java/ql/test/kotlin/library-tests/files/test.ql

@@ -0,0 +1,5 @@
+import java
+
+from Parameter p
+where p.fromSource()
+select p, p.getType().toString(), p.getType().getFile().getBaseName(), p.getType().getLocation().getStartLine()