Highlight use of toString() inside string interpolation as redundant #KT-10731 Fixed

idea/testData/quickfix/removeToStringInStringTemplate/.inspection

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+org.jetbrains.kotlin.idea.inspections.RemoveToStringInStringTemplateInspection

idea/testData/quickfix/removeToStringInStringTemplate/call.kt

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+// "Remove 'toString()' call" "true"
+
+operator fun Any.invoke() = this
+
+fun foo(arg: Any) = "${arg().<caret>toString()}"

idea/testData/quickfix/removeToStringInStringTemplate/call.kt.after

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+// "Remove 'toString()' call" "true"
+
+operator fun Any.invoke() = this
+
+fun foo(arg: Any) = "${arg()}"

idea/testData/quickfix/removeToStringInStringTemplate/name.kt

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+// "Remove 'toString()' call" "true"
+
+fun foo(arg: Any) = "arg = ${arg.<caret>toString()}"

idea/testData/quickfix/removeToStringInStringTemplate/name.kt.after

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+// "Remove 'toString()' call" "true"
+
+fun foo(arg: Any) = "arg = $arg"

idea/testData/quickfix/removeToStringInStringTemplate/nameWithPostfix.kt

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+// "Remove 'toString()' call" "true"
+
+fun foo(arg: Any) = "arg = ${arg.<caret>toString()}xy"

idea/testData/quickfix/removeToStringInStringTemplate/nameWithPostfix.kt.after

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+// "Remove 'toString()' call" "true"
+
+fun foo(arg: Any) = "arg = ${arg}xy"

idea/testData/quickfix/removeToStringInStringTemplate/simple.kt

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+// "Remove 'toString()' call" "true"
+
+fun foo(s: String) = s
+
+fun bar() = foo("a${"b".toString()<caret>}")

idea/testData/quickfix/removeToStringInStringTemplate/simple.kt.after

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+// "Remove 'toString()' call" "true"
+
+fun foo(s: String) = s
+
+fun bar() = foo("a${"b"<caret>}")