Add function type testcases

Author: pikinier20

scaladoc-testcases/src/tests/functionTypeSignatures.scala

@@ -0,0 +1,10 @@
+package tests.functionTypeSignatures
+
+type A = ((Int, Int)) => Int
+
+type B = (Int | String) => Int
+
+type C = (Int & String) => Int
+
+type E = (A => B) => B
+

scaladoc/test/dotty/tools/scaladoc/signatures/TranslatableSignaturesTestCases.scala

@@ -94,3 +94,5 @@ class Exports extends SignatureTest("exports2", SignatureTest.all, sourceFiles =
 class ContextFunctions extends SignatureTest("contextfunctions", SignatureTest.all)
 
 class MarkdownCode extends SignatureTest("markdowncode", SignatureTest.all)
+
+class FunctionTypeSignatures extends SignatureTest("functionTypeSignatures", SignatureTest.all)