C#: Add array access test for an inline array.

Author: michaelnebel

csharp/ql/test/library-tests/expressions/ArrayAccess2.expected

@@ -0,0 +1 @@
+| expressions.cs:79:14:79:25 | MainAccesses | expressions.cs:89:13:89:26 | access to array element |

csharp/ql/test/library-tests/expressions/ArrayAccess2.ql

@@ -0,0 +1,13 @@
+/**
+ * @name Test for inline array access
+ */
+
+import csharp
+
+from Method m, ArrayAccess e
+where
+  m.hasName("MainAccesses") and
+  e.getEnclosingCallable() = m and
+  e.getQualifier().(LocalVariableAccess).getTarget().getName() = "inlinearray" and
+  e.getIndex(0).(IntLiteral).getValue() = "2"
+select m, e