project coin: @SafeVarargs applicability

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/SafeVarargsApplicability.java

@@ -0,0 +1,47 @@
+import java.util.List;
+
+@<error descr="'@SafeVarargs' not applicable to type">SafeVarargs</error>
+public class SafeVarargsTests {
+    //fixed arity
+    <error descr="@SafeVarargs is not allowed on methods with fixed arity">@SafeVarargs</error>
+    public void testNonVarargs1(){}
+
+    <error descr="@SafeVarargs is not allowed on methods with fixed arity">@SafeVarargs</error>
+    public void testNonVarargs2(int <warning descr="Parameter 'i' is never used">i</warning>){}
+
+    <error descr="@SafeVarargs is not allowed on methods with fixed arity">@SafeVarargs</error>
+    public <T> void testNonVarargs3(T <warning descr="Parameter 't' is never used">t</warning>){}
+
+    //non static/non final
+    <error descr="@SafeVarargs is not allowed on non-final instance methods">@SafeVarargs</error>
+    public void testNonVarargs4(int... <warning descr="Parameter 'i' is never used">i</warning>){}
+
+    //reassigned
+    @SafeVarargs
+    public final <T> void testT(T[] tt, T... t) {
+        <warning descr="@SafeVarargs do not suppress potentially unsafe operations">t</warning> = tt;
+        System.out.println(t[0]);
+    }
+
+    //incorrect types
+    @SafeVarargs
+    public final void testString(<warning descr="@SafeVarargs is not applicable for reifiable types">String...</warning> <warning descr="Parameter 'str' is never used">str</warning>){
+    }
+
+    @SafeVarargs
+    public final void testStringArray(<warning descr="@SafeVarargs is not applicable for reifiable types">String[]...</warning> <warning descr="Parameter 'str' is never used">str</warning>){
+    }
+
+    @SafeVarargs
+    public static void testUnbound(<warning descr="@SafeVarargs is not applicable for reifiable types">List<?>...</warning> <warning descr="Parameter 't' is never used">t</warning>){}
+
+
+    //correct usages
+    @SafeVarargs
+    public static <T> void foo(T... <warning descr="Parameter 't' is never used">t</warning>){}
+    @SafeVarargs
+    public static <T> void foo1(List<T>... <warning descr="Parameter 't' is never used">t</warning>){}
+    @SafeVarargs
+    public static <T> void foo2(List<? extends T>... <warning descr="Parameter 't' is never used">t</warning>){}
+
+}