Searching for properties declared in class constructor signature.

idea/testData/inspections/unusedSymbol/parameter/inspectionData/expected.xml

@@ -0,0 +1,10 @@
+<problems>
+  <problem>
+    <file>paramPropertyUnused.kt</file>
+    <line>1</line>
+    <module>light_idea_test_case</module>
+    <entry_point TYPE="file" FQNAME="temp:///src/paramPropertyUnused.kt" />
+    <problem_class severity="WARNING" attribute_key="NOT_USED_ELEMENT_ATTRIBUTES">Unused Symbol</problem_class>
+    <description>Property 'param' is never used</description>
+  </problem>
+</problems>

idea/testData/inspections/unusedSymbol/parameter/inspectionData/inspections.test

@@ -0,0 +1 @@
+// INSPECTION_CLASS: org.jetbrains.kotlin.idea.inspections.UnusedSymbolInspection

idea/testData/inspections/unusedSymbol/parameter/paramPropertyDataClass.kt

@@ -0,0 +1,6 @@
+// properties can be referred by component1/component2, which is too expensive to search, don't mark them as unused
+data class MyClass(val param1: String, var param2: String)
+
+fun main(args: Array<String>) {
+    MyClass()
+}

idea/testData/inspections/unusedSymbol/parameter/paramPropertyOverriddenUsed.kt

@@ -0,0 +1,9 @@
+open class Klass {
+    open val used = ":)"
+}
+
+class Subklass: Klass(override val used: String)
+
+fun main(args: Array<String>) {
+    Subklass().used
+}

idea/testData/inspections/unusedSymbol/parameter/paramPropertyOverride.kt

@@ -0,0 +1,10 @@
+trait Trait {
+    val member: String
+}
+
+class Klass(override val member: String)
+
+fun main(args: Array<String>) {
+    val t: Trait = Klass()
+    println(t.member)
+}

idea/testData/inspections/unusedSymbol/parameter/paramPropertyUnused.kt

@@ -0,0 +1,5 @@
+class MyClass(val param: String)
+
+fun main(args: Array<String>) {
+    MyClass()
+}

idea/testData/inspections/unusedSymbol/parameter/paramPropertyUsed.kt

@@ -0,0 +1,5 @@
+class MyClass(val param: String)
+
+fun main(args: Array<String>) {
+    MyClass().param
+}

idea/testData/inspections/unusedSymbol/parameter/usedInJava.java

@@ -0,0 +1,10 @@
+package test;
+
+import foo.UsedInJava;
+
+class usedInJava {
+    public static void main(String[] args) {
+        new UsedInJava("a", "b").getUsedByGetter();
+        new UsedInJava("a", "b").setUsedBySetter(":|");
+    }
+}

idea/testData/inspections/unusedSymbol/parameter/usedInJava.kt

@@ -0,0 +1,3 @@
+package foo
+
+class UsedInJava(val usedByGetter: String, var usedBySetter: String)