Test suites for Dialyzer

This is a transcription of most of the cvs.srv.it.uu.se:/hipe repository
dialyzer_tests into test suites that use the test server framework.

See README for information on how to use the included scripts for
modifications and updates.

When testing Dialyzer it's important that several OTP modules
are included in the plt. The suites takes care of that too.

1 files changed, 71 insertions, 0 deletions

diff --git a/lib/dialyzer/test/small_tests_SUITE_data/src/appmon_place.erl b/lib/dialyzer/test/small_tests_SUITE_data/src/appmon_place.erl
new file mode 100644
index 0000000000..8371cab233
--- /dev/null
+++ b/lib/dialyzer/test/small_tests_SUITE_data/src/appmon_place.erl
@@ -0,0 +1,71 @@
+%%---------------------------------------------------------------------
+%% This is added as a test because it was giving a false positive
+%% (function move/4 will nevr be called) due to the strange use of
+%% self-recursive fun construction in placex/3.
+%%
+%% The analysis was getting confused that the foldl call will never
+%% terminate (due to a wrong hard-coded type for foldl) and inferred
+%% that the remaining calls in the body of placex/3 will not be
+%% reached.  Fixed 11 March 2005.
+%%---------------------------------------------------------------------
+
+-module(appmon_place).
+-export([place/2]).
+
+place(DG, Root) ->
+    case appmon_dg:get(data, DG, Root) of
+	false -> [0];
+	_Other -> 
+	    placey(DG, Root, 1),
+	    placex(DG, Root, [])
+    end.
+
+placey(DG, V, Y) ->
+    appmon_dg:set(y, DG, V, Y),
+    Y1 = Y+1,
+    lists:foreach(fun(C) -> placey(DG, C, Y1) end, appmon_dg:get(out, DG, V)).
+
+placex(DG, V, LastX) ->
+    Ch = appmon_dg:get(out, DG, V),
+    ChLX = lists:foldl(fun(C, Accu) -> placex(DG, C, Accu) end,
+		       tll(LastX),
+		       Ch),
+    Width	= appmon_dg:get(w, DG, V),
+    MyX		= calc_mid(DG, Width, Ch),
+    DeltaX	= calc_delta(MyX, hdd(LastX)+20),
+    appmon_dg:set(x, DG, V, MyX),
+    move(DG, V, [MyX+Width | ChLX], DeltaX).
+
+move(_DG, _L, LastX, 0) -> LastX;
+move(DG, V, LastX, DeltaX) -> move2(DG, V, LastX, DeltaX).
+
+move2(DG, V, LastX, DeltaX) ->
+    NewX = appmon_dg:get(x, DG, V)+DeltaX,
+    appmon_dg:set(x, DG, V, NewX),
+    ChLX = lists:foldl(fun(C, LX) -> move2(DG, C, LX, DeltaX) end,
+		       tll(LastX), 
+		       appmon_dg:get(out, DG, V)),
+    [max(NewX+appmon_dg:get(w, DG, V), hdd(LastX)) | ChLX].
+
+max(A, B) when A>B -> A;
+max(_, B) -> B.
+
+calc_mid(_DG, _Width, []) -> 0;
+calc_mid(DG, Width, ChList) ->
+    LeftMostX = appmon_dg:get(x, DG, hd(ChList)),
+    Z2 = lists:last(ChList),
+    RightMostX = appmon_dg:get(x, DG, Z2)+appmon_dg:get(w, DG, Z2),
+    trunc((LeftMostX+RightMostX)/2)-trunc(Width/2).
+
+calc_delta(Mid, Right) ->    
+    if  Right>Mid	-> Right-Mid;
+	true		-> 0
+    end.
+
+%% Special head and tail
+%% Handles empty list in a non-standard way
+tll([]) -> [];
+tll([_|T]) -> T.
+hdd([]) -> 0;
+hdd([H|_]) -> H.
+