Support for checking loaded descriptors agains an expected txt file

compiler/testData/lazyResolve/diagnostics/objects/Objects.txt

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+namespace <root>
+
+// <namespace name="toplevelObjectDeclarations">
+namespace toplevelObjectDeclarations
+
+internal open class toplevelObjectDeclarations.Foo : jet.Any {
+    public final /*constructor*/ fun <init>(/*0*/ y: jet.Int): toplevelObjectDeclarations.Foo
+    internal open fun foo(): jet.Int
+}
+internal final class toplevelObjectDeclarations.T : toplevelObjectDeclarations.Foo {
+    public final /*constructor*/ fun <init>(): toplevelObjectDeclarations.T
+    internal open override /*1*/ fun foo(): jet.Int
+}
+internal final val A: toplevelObjectDeclarations.A
+internal final val B: toplevelObjectDeclarations.B
+internal final val x: jet.Int
+internal final val y: toplevelObjectDeclarations.<no name provided>
+internal final val z: jet.Int
+// </namespace name="toplevelObjectDeclarations">

compiler/testData/lazyResolve/diagnostics/objects/ObjectsInheritance.txt

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+namespace <root>
+
+// <namespace name="toplevelObjectDeclarations">
+namespace toplevelObjectDeclarations
+
+internal final val CObj: toplevelObjectDeclarations.CObj
+internal final val DOjb: toplevelObjectDeclarations.DOjb
+// </namespace name="toplevelObjectDeclarations">

compiler/testData/lazyResolve/diagnostics/objects/ObjectsLocal.txt

@@ -0,0 +1,13 @@
+namespace <root>
+
+// <namespace name="localObjects">
+namespace localObjects
+
+internal open class localObjects.Foo : jet.Any {
+    public final /*constructor*/ fun <init>(): localObjects.Foo
+    internal final fun foo(): jet.Int
+}
+internal final val A: localObjects.A
+internal final val bb: [ERROR : <ERROR FUNCTION RETURN TYPE>]
+internal final fun test(): jet.Tuple0
+// </namespace name="localObjects">

compiler/testData/lazyResolve/diagnostics/objects/ObjectsNested.txt

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+namespace <root>
+
+// <namespace name="nestedObejcts">
+namespace nestedObejcts
+
+internal final val A: nestedObejcts.A
+internal final val B: nestedObejcts.B
+internal final val a: nestedObejcts.A
+internal final val b: nestedObejcts.B
+internal final val c: nestedObejcts.A.B
+internal final val d: nestedObejcts.A.B.A
+internal final val e: [ERROR : <ERROR PROPERTY TYPE>]
+// </namespace name="nestedObejcts">

compiler/testData/lazyResolve/diagnostics/objects/kt2240.txt

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+namespace <root>
+
+// <namespace name="a">
+namespace a
+
+internal final class a.A : jet.Any {
+    public final /*constructor*/ fun <init>(): a.A
+}
+internal final val o: a.<no name provided>
+internal final fun </*0*/ T : jet.Any?>a.A.foo(/*0*/ f: T): jet.Tuple0
+// </namespace name="a">