Adds idetools testcase for dynamic dispatch. Refs #477.

.gitignore

@@ -171,6 +171,7 @@ examples/cross_calculator/android/tags
 /tests/caas/imported
 /tests/caas/issue_416_template_shift
 /tests/caas/issue_452_export_shift
+/tests/caas/issue_477_dynamic_dispatch
 /tests/caas/main
 /tests/caasdriver
 /tools/nimgrep

tests/caas/issue_477_dynamic_dispatch.nim

@@ -0,0 +1,19 @@
+type
+  TThing = object of TObject
+  TUnit = object of TThing
+    x: int
+
+method collide(a, b: TThing) {.inline.} =
+  quit "to override!"
+
+method collide(a: TThing, b: TUnit) {.inline.} =
+  echo "collide1"
+
+method collide(a: TUnit, b: TThing) {.inline.} =
+  echo "collide2"
+
+var
+  a, b: TUnit
+
+when isMainModule:
+  collide(a, b) # output: 2

tests/caas/issue_477_dynamic_dispatch.txt

@@ -0,0 +1,5 @@
+issue_477_dynamic_dispatch.nim
+> c --run
+SuccessX
+> idetools --track:issue_477_dynamic_dispatch.nim,19,5 --def
+def\tskMethod\tissue_477_dynamic_dispatch.collide\tproc \(TUnit, TThing\)\{.inline.\}