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MethodClassifierUnitTest.scala
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MethodClassifierUnitTest.scala
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package scala.tools.eclipse.debug.model
import org.eclipse.core.resources.IncrementalProjectBuilder
import org.eclipse.core.runtime.IPath
import org.eclipse.core.runtime.Path
import org.junit.Assert
import org.junit.BeforeClass
import org.junit.Test
import org.mockito.Matchers.anyString
import org.mockito.Mockito.mock
import org.mockito.Mockito.when
import org.mockito.invocation.InvocationOnMock
import org.mockito.stubbing.Answer
import com.sun.jdi.Field
import com.sun.jdi.Method
import com.sun.jdi.ReferenceType
import scala.tools.eclipse.debug.classfile.ClassfileParser
import scala.tools.eclipse.debug.classfile.ConstantPool
import scala.tools.eclipse.debug.model.MethodClassifier.DefaultGetter
import scala.tools.eclipse.debug.model.MethodClassifier.Getter
import scala.tools.eclipse.debug.model.MethodClassifier.Setter
import scala.tools.eclipse.testsetup.SDTTestUtils
import scala.tools.eclipse.testsetup.TestProjectSetup
object MethodClassifierUnitTest extends TestProjectSetup("constant-pool", bundleName = "org.scala-ide.sdt.debug.tests") {
@BeforeClass
def buildProject() {
project.underlying.build(IncrementalProjectBuilder.CLEAN_BUILD, null)
project.underlying.build(IncrementalProjectBuilder.INCREMENTAL_BUILD, null)
}
}
class MethodClassifierUnitTest {
@Test
def cp_testConcreteClassExtendsTrait() {
val resource = SDTTestUtils.workspace.getRoot().getFile("/constant-pool/bin/stepping/ConcreteClass.class")
ConstantPool.fromFile(resource.getLocation().toFile())
}
@Test
def cp_testDefaultsClass() {
val resource = SDTTestUtils.workspace.getRoot().getFile("/constant-pool/bin/stepping/Defaults.class")
ConstantPool.fromFile(resource.getLocation().toFile())
}
@Test
def cp_testDefaultsObjectClass() {
val resource = SDTTestUtils.workspace.getRoot().getFile("/constant-pool/bin/stepping/Defaults$.class")
ConstantPool.fromFile(resource.getLocation().toFile())
}
@Test
def cp_testBaseTrait() {
val resource = SDTTestUtils.workspace.getRoot().getFile("/constant-pool/bin/stepping/BaseTrait.class")
ConstantPool.fromFile(resource.getLocation().toFile())
}
@Test
def cp_testImplClass() {
val resource = SDTTestUtils.workspace.getRoot().getFile("/constant-pool/bin/stepping/BaseTrait$class.class")
ConstantPool.fromFile(resource.getLocation().toFile())
}
@Test
def cp_testMethodClassifier() {
val resource = SDTTestUtils.workspace.getRoot().getFile("/constant-pool/bin/stepping/MethodClassifiers.class")
ConstantPool.fromFile(resource.getLocation().toFile())
}
lazy val resource = SDTTestUtils.workspace.getRoot().getFile("/constant-pool/bin/stepping/ConcreteClass.class")
lazy val parser = new ClassfileParser(resource.getLocation().toFile())
@Test
def testForwarder_pos_1() {
assertForwarder("concreteTraitMethod1", true)
}
@Test
def testForwarder_pos_2() {
assertForwarder("concreteTraitMethod2", true)
}
@Test
def testForwarder_pos_3() {
assertForwarder("concreteTraitMethod3", true)
}
@Test
def testForwarder_pos_4() {
assertForwarder("concreteTraitMethod4", true)
}
@Test
def testForwarder_pos_withDefault() {
assertForwarder("concreteTraitMethodWithDefault", true)
}
@Test
def testForwarder_neg_defaults() {
assertForwarder("abstractMethodWithDefault", false)
}
@Test
def testForwarder_neg_Java() {
// this is a call to a Java static method with the same name (but it's not inside an Impl class)
assertForwarder("console", false)
}
@Test
def testDefaults_pos_1() {
assertDefaultGetter("init$default$1", true)
}
@Test
def testDefaults_pos_2() {
assertDefaultGetter("methWithDefaults2$default$4", true)
}
@Test
def testDefaults_pos_3() {
assertDefaultGetter("methWithDefaults2$default$2", true)
}
@Test
def testGetter_pos_concrete() {
assertGetter("concreteField1", true)
}
@Test
def testGetter_pos_concrete_mutable() {
assertGetter("concreteMField1", true)
}
@Test
def testGetter_pos_abs() {
assertGetter("abstractField1", true)
}
@Test
def testGetter_pos_abs_mutable() {
assertGetter("abstractMField1", true)
}
@Test
def testSetter_pos_concrete() {
assertSetter("concreteMField1_$eq", true)
}
@Test
def testSetter_pos_abs() {
assertSetter("abstractMField1_$eq", true)
}
@Test
def testGetter_nonPrivate() {
assertGetter("stepping$ConcreteClass$$fakePrivate", true)
}
@Test
def testSetter_nonPrivate() {
assertSetter("stepping$ConcreteClass$$fakePrivate_$eq", true)
}
def assertForwarder(method: String, forwarder: Boolean) {
val classifier = new MethodClassifier
Assert.assertEquals("Forwarder test failed", forwarder, classifier.isForwarderBytecode(parser.methods(method).bytecode, parser.constantPoolBytes, parser.pool.size, method))
}
def assertDefaultGetter(name: String, expected: Boolean) {
val method = mock(classOf[Method])
when(method.name()).thenReturn(name)
Assert.assertEquals("Default getter", expected, (new MethodClassifier).is(DefaultGetter, method))
}
def prepareGetterMock(name: String) = {
val method = mock(classOf[Method])
val refType = mock(classOf[ReferenceType])
when(method.name()).thenReturn(name)
when(method.declaringType()).thenReturn(refType)
when(refType.fieldByName(anyString())) thenAnswer { inv: InvocationOnMock =>
inv.getArguments()(0) match {
case name: String =>
val field = mock(classOf[Field])
parser.fields.get(name).map(_ => field).getOrElse(null)
}
}
method
}
def assertGetter(name: String, expected: Boolean) {
Assert.assertEquals("Getter", expected, (new MethodClassifier).is(Getter, prepareGetterMock(name)))
}
def assertSetter(name: String, expected: Boolean) {
Assert.assertEquals("Setter", expected, (new MethodClassifier).is(Setter, prepareGetterMock(name)))
}
// implicits
implicit def toPath(str: String): IPath = new Path(str)
implicit def toAnswer[A](f: InvocationOnMock => A): Answer[A] = new Answer[A] {
def answer(inv: InvocationOnMock): A = f(inv)
}
}