Merge remote-tracking branch 'upstream/master' into init_auto

[nit.git] / tests / warn_truism.nit

diff --git a/tests/warn_truism.nit b/tests/warn_truism.nit
new file mode 100644 (file)
index 0000000..32e1e1d
--- /dev/null
+++ b/tests/warn_truism.nit
@@ -0,0 +1,29 @@
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import core::kernel
+
+var a = true
+if a == true then end
+var b = a != false
+var c = ((a or b) == false) and b != true
+
+# only warn the common case (not those)
+if true == a then end
+if a == (true) then end
+
+# dont warn if operand 1 is not a bool
+var o: nullable Bool = a
+if o == true then end
+if o or else false then end