[Tests] Check Java interop

compiler/testData/compileJavaAgainstKotlin/method/contextualFunctions/Signature.java

@@ -0,0 +1,7 @@
+package test;
+
+class JavaClass {
+    public static void test(C1 c1, C2 c2, R r, P1 p1, P2 p2) {
+        SignatureKt.f(c1, c2, r, p1, p2);
+    }
+}

compiler/testData/compileJavaAgainstKotlin/method/contextualFunctions/Signature.kt

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+// TARGET_BACKEND: JVM_IR
+
+package test
+
+interface C1
+interface C2
+interface R
+interface P1
+interface P2
+
+context(C1, C2)
+fun R.f(p1: P1, p2: P2) {}

compiler/testData/compileJavaAgainstKotlin/method/contextualFunctions/Signature.txt

@@ -0,0 +1,25 @@
+package test
+
+public fun test.R.f(/*0*/ test.P1, /*1*/ test.P2): kotlin.Unit
+
+public interface C1 {
+}
+
+public interface C2 {
+}
+
+public/*package*/ open class JavaClass {
+    public/*package*/ constructor JavaClass()
+
+    // Static members
+    public open fun test(/*0*/ test.C1!, /*1*/ test.C2!, /*2*/ test.R!, /*3*/ test.P1!, /*4*/ test.P2!): kotlin.Unit
+}
+
+public interface P1 {
+}
+
+public interface P2 {
+}
+
+public interface R {
+}