https://www.graalvm.org/ 
public class jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
         0: .line 52
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Ljdk/tools/jaotc/test/collect/directory/DirectorySourceProviderTest;

  public void itShouldReturnNullForNonExistantPath();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=3, args_size=1
        start local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
         0: .line 55
            new jdk.tools.jaotc.collect.directory.DirectorySourceProvider
            dup
            new jdk.tools.jaotc.test.collect.FakeFileSupport
            dup
            iconst_0
            anewarray java.lang.String
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            iconst_0
            anewarray java.lang.String
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            invokespecial jdk.tools.jaotc.test.collect.FakeFileSupport.<init>:(Ljava/util/Set;Ljava/util/Set;)V
            invokespecial jdk.tools.jaotc.collect.directory.DirectorySourceProvider.<init>:(Ljdk/tools/jaotc/collect/FileSupport;)V
            astore 1 /* target */
        start local 1 // jdk.tools.jaotc.collect.directory.DirectorySourceProvider target
         1: .line 56
            aload 1 /* target */
            ldc "hello"
            aconst_null
            invokevirtual jdk.tools.jaotc.collect.directory.DirectorySourceProvider.findSource:(Ljava/lang/String;Ljdk/tools/jaotc/collect/SearchPath;)Ljdk/tools/jaotc/collect/ClassSource;
            astore 2 /* result */
        start local 2 // jdk.tools.jaotc.collect.ClassSource result
         2: .line 57
            aload 2 /* result */
            invokestatic org.junit.Assert.assertNull:(Ljava/lang/Object;)V
         3: .line 58
            return
        end local 2 // jdk.tools.jaotc.collect.ClassSource result
        end local 1 // jdk.tools.jaotc.collect.directory.DirectorySourceProvider target
        end local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0    this  Ljdk/tools/jaotc/test/collect/directory/DirectorySourceProviderTest;
            1    4     1  target  Ljdk/tools/jaotc/collect/directory/DirectorySourceProvider;
            2    4     2  result  Ljdk/tools/jaotc/collect/ClassSource;
    RuntimeVisibleAnnotations: 
      org.junit.Test()

  public void itShouldReturnNullForNonDirectory();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=3, args_size=1
        start local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
         0: .line 62
            new jdk.tools.jaotc.collect.directory.DirectorySourceProvider
            dup
            new jdk.tools.jaotc.test.collect.FakeFileSupport
            dup
            iconst_1
            anewarray java.lang.String
            dup
            iconst_0
            ldc "foobar"
            aastore
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            iconst_0
            anewarray java.lang.String
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            invokespecial jdk.tools.jaotc.test.collect.FakeFileSupport.<init>:(Ljava/util/Set;Ljava/util/Set;)V
            invokespecial jdk.tools.jaotc.collect.directory.DirectorySourceProvider.<init>:(Ljdk/tools/jaotc/collect/FileSupport;)V
            astore 1 /* target */
        start local 1 // jdk.tools.jaotc.collect.directory.DirectorySourceProvider target
         1: .line 63
            aload 1 /* target */
            ldc "foobar"
            aconst_null
            invokevirtual jdk.tools.jaotc.collect.directory.DirectorySourceProvider.findSource:(Ljava/lang/String;Ljdk/tools/jaotc/collect/SearchPath;)Ljdk/tools/jaotc/collect/ClassSource;
            astore 2 /* result */
        start local 2 // jdk.tools.jaotc.collect.ClassSource result
         2: .line 64
            aload 2 /* result */
            invokestatic org.junit.Assert.assertNull:(Ljava/lang/Object;)V
         3: .line 65
            return
        end local 2 // jdk.tools.jaotc.collect.ClassSource result
        end local 1 // jdk.tools.jaotc.collect.directory.DirectorySourceProvider target
        end local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0    this  Ljdk/tools/jaotc/test/collect/directory/DirectorySourceProviderTest;
            1    4     1  target  Ljdk/tools/jaotc/collect/directory/DirectorySourceProvider;
            2    4     2  result  Ljdk/tools/jaotc/collect/ClassSource;
    RuntimeVisibleAnnotations: 
      org.junit.Test()

  public void itShouldReturnNullForMalformedURI();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=10, locals=4, args_size=1
        start local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
         0: .line 69
            iconst_0
            anewarray java.lang.String
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            astore 1 /* visited */
        start local 1 // java.util.Set visited
         1: .line 70
            new jdk.tools.jaotc.collect.directory.DirectorySourceProvider
            dup
            new jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest$1
            dup
            aload 0 /* this */
            iconst_1
            anewarray java.lang.String
            dup
            iconst_0
            ldc "foobar"
            aastore
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            iconst_1
            anewarray java.lang.String
            dup
            iconst_0
            ldc "foobar"
            aastore
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            aload 1 /* visited */
            invokespecial jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest$1.<init>:(Ljdk/tools/jaotc/test/collect/directory/DirectorySourceProviderTest;Ljava/util/Set;Ljava/util/Set;Ljava/util/Set;)V
            invokespecial jdk.tools.jaotc.collect.directory.DirectorySourceProvider.<init>:(Ljdk/tools/jaotc/collect/FileSupport;)V
            astore 2 /* target */
        start local 2 // jdk.tools.jaotc.collect.directory.DirectorySourceProvider target
         2: .line 77
            aload 2 /* target */
            ldc "foobar"
            aconst_null
            invokevirtual jdk.tools.jaotc.collect.directory.DirectorySourceProvider.findSource:(Ljava/lang/String;Ljdk/tools/jaotc/collect/SearchPath;)Ljdk/tools/jaotc/collect/ClassSource;
            astore 3 /* result */
        start local 3 // jdk.tools.jaotc.collect.ClassSource result
         3: .line 78
            aload 3 /* result */
            invokestatic org.junit.Assert.assertNull:(Ljava/lang/Object;)V
            iconst_1
            anewarray java.lang.String
            dup
            iconst_0
         4: .line 79
            ldc "1"
            aastore
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            aload 1 /* visited */
            invokestatic org.junit.Assert.assertEquals:(Ljava/lang/Object;Ljava/lang/Object;)V
         5: .line 80
            return
        end local 3 // jdk.tools.jaotc.collect.ClassSource result
        end local 2 // jdk.tools.jaotc.collect.directory.DirectorySourceProvider target
        end local 1 // java.util.Set visited
        end local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    6     0     this  Ljdk/tools/jaotc/test/collect/directory/DirectorySourceProviderTest;
            1    6     1  visited  Ljava/util/Set<Ljava/lang/String;>;
            2    6     2   target  Ljdk/tools/jaotc/collect/directory/DirectorySourceProvider;
            3    6     3   result  Ljdk/tools/jaotc/collect/ClassSource;
    RuntimeVisibleAnnotations: 
      org.junit.Test()

  public void itShouldCreateSourceIfNameExistsAndIsADirectory();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=4, args_size=1
        start local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
         0: .line 84
            new jdk.tools.jaotc.test.collect.FakeFileSupport
            dup
            iconst_1
            anewarray java.lang.String
            dup
            iconst_0
            ldc "foo"
            aastore
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            iconst_1
            anewarray java.lang.String
            dup
            iconst_0
            ldc "foo"
            aastore
            invokestatic jdk.tools.jaotc.test.collect.Utils.set:([Ljava/lang/Object;)Ljava/util/Set;
            invokespecial jdk.tools.jaotc.test.collect.FakeFileSupport.<init>:(Ljava/util/Set;Ljava/util/Set;)V
            astore 1 /* fileSupport */
        start local 1 // jdk.tools.jaotc.collect.FileSupport fileSupport
         1: .line 85
            new jdk.tools.jaotc.collect.directory.DirectorySourceProvider
            dup
            aload 1 /* fileSupport */
            invokespecial jdk.tools.jaotc.collect.directory.DirectorySourceProvider.<init>:(Ljdk/tools/jaotc/collect/FileSupport;)V
            astore 2 /* target */
        start local 2 // jdk.tools.jaotc.collect.directory.DirectorySourceProvider target
         2: .line 86
            aload 2 /* target */
            ldc "foo"
            aconst_null
            invokevirtual jdk.tools.jaotc.collect.directory.DirectorySourceProvider.findSource:(Ljava/lang/String;Ljdk/tools/jaotc/collect/SearchPath;)Ljdk/tools/jaotc/collect/ClassSource;
            astore 3 /* foo */
        start local 3 // jdk.tools.jaotc.collect.ClassSource foo
         3: .line 87
            aload 3 /* foo */
            invokestatic org.junit.Assert.assertNotNull:(Ljava/lang/Object;)V
         4: .line 88
            ldc "directory:foo"
            aload 3 /* foo */
            invokevirtual java.lang.Object.toString:()Ljava/lang/String;
            invokestatic org.junit.Assert.assertEquals:(Ljava/lang/Object;Ljava/lang/Object;)V
         5: .line 89
            return
        end local 3 // jdk.tools.jaotc.collect.ClassSource foo
        end local 2 // jdk.tools.jaotc.collect.directory.DirectorySourceProvider target
        end local 1 // jdk.tools.jaotc.collect.FileSupport fileSupport
        end local 0 // jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    6     0         this  Ljdk/tools/jaotc/test/collect/directory/DirectorySourceProviderTest;
            1    6     1  fileSupport  Ljdk/tools/jaotc/collect/FileSupport;
            2    6     2       target  Ljdk/tools/jaotc/collect/directory/DirectorySourceProvider;
            3    6     3          foo  Ljdk/tools/jaotc/collect/ClassSource;
    RuntimeVisibleAnnotations: 
      org.junit.Test()
}
SourceFile: "DirectorySourceProviderTest.java"
NestMembers:
  jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest$1
InnerClasses:
  jdk.tools.jaotc.test.collect.directory.DirectorySourceProviderTest$1