[vala] (17 commits) ...tests: Add invalid "base" tests to increase coverage

[Rico Tzschichholz <ricotz src gnome org>]

Summary of changes:

  7082e4f... vala: Replace if-else-tree with switch (*)
  0520da6... codegen: Drop dead lambda-in-constructor path (*)
  cc354c4... valadoc/tests: split VALAFLAGS over multiple lines in testr (*)
  1669abc... valadoc: Add coverage build-flags (*)
  62b4b3a... tests: Add "template" parser test to increase coverage (*)
  fa49ab7... tests: Add "tuple" parser test to increase coverage (*)
  32d02f1... tests: Add "initially-unowned" test to increase coverage (*)
  f2457d8... tests: Add explicit "move" and "resize" array tests to incr (*)
  bd0a65b... tests: Add "dynamic" signal and property tests to increase  (*)
  724a8f9... tests: Add "contains" method test to increase coverage (*)
  872d43c... tests: Add "iterator" methods tests to increase coverage (*)
  993b9cc... tests: Add "do-while" parser tests to increase coverage (*)
  74d9501... tests: Add "assignment" operator parser tests to increase c (*)
  3d8a753... tests: Add "preprocessor" parser test to increase coverage (*)
  eb8761b... tests: Add "continue" parser test to increase coverage (*)
  1b99de9... tests: Add "while (false)" test to increase coverage (*)
  45b023d... tests: Add invalid "base" tests to increase coverage (*)

(*) This commit already existed in another branch; no separate mail sent