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package mill
import ammonite.ops._
import ImplicitWd._
import mill.define.{Target, Task}
import mill.discover.Discovered
import mill.eval.Evaluator
import mill.modules.Jvm.jarUp
import mill.util.OSet
import utest._
object JavaCompileJarTests extends TestSuite{
def compileAll(dest: Path, sources: Seq[PathRef]) = {
mkdir(dest)
import ammonite.ops._
%("javac", sources.map(_.path.toString()), "-d", dest)(wd = dest)
PathRef(dest)
}
val tests = Tests{
'javac {
val workspacePath = pwd / 'target / 'workspace / 'javac
val javacSrcPath = pwd / 'core / 'src / 'test / 'examples / 'javac
val javacDestPath = workspacePath / 'src
mkdir(pwd / 'target / 'workspace / 'javac)
cp(javacSrcPath, javacDestPath)
object Build extends Module{
def sourceRootPath = javacDestPath / 'src
def resourceRootPath = javacDestPath / 'resources
// sourceRoot -> allSources -> classFiles
// |
// v
// resourceRoot ----> jar
def sourceRoot = T.source{ sourceRootPath }
def resourceRoot = T.source{ resourceRootPath }
def allSources = T{ ls.rec(sourceRoot().path).map(PathRef(_)) }
def classFiles = T{ compileAll(T.ctx().dest, allSources()) }
def jar = T{ jarUp(resourceRoot, classFiles) }
def run(mainClsName: String) = T.command{
%%('java, "-cp", classFiles().path, mainClsName)
}
}
import Build._
val mapping = Discovered.mapping(Build)
def eval[T](t: Task[T]): (T, Int) = {
val evaluator = new Evaluator(workspacePath, mapping)
val evaluated = evaluator.evaluate(OSet(t))
Tuple2(
evaluated.values(0).asInstanceOf[T],
evaluated.evaluated.collect{
case t: Target[_] if mapping.contains(t) => t
case t: mill.define.Command[_] => t
}.size
)
}
def check(targets: OSet[Task[_]], expected: OSet[Task[_]]) = {
val evaluator = new Evaluator(workspacePath, mapping)
val evaluated = evaluator.evaluate(targets)
.evaluated
.flatMap(_.asTarget)
.filter(mapping.contains)
assert(evaluated == expected)
}
def append(path: Path, txt: String) = ammonite.ops.write.append(path, txt)
check(
targets = OSet(jar),
expected = OSet(allSources, classFiles, jar)
)
// Re-running with no changes results in nothing being evaluated
check(targets = OSet(jar), expected = OSet())
// Appending an empty string gets ignored due to file-content hashing
append(sourceRootPath / "Foo.java", "")
check(targets = OSet(jar), expected = OSet())
// Appending whitespace forces a recompile, but the classfilesend up
// exactly the same so no re-jarring.
append(sourceRootPath / "Foo.java", " ")
// Note that `sourceRoot` and `resourceRoot` never turn up in the `expected`
// list, because they are `Source`s not `Target`s
check(targets = OSet(jar), expected = OSet(/*sourceRoot, */allSources, classFiles))
// Appending a new class changes the classfiles, which forces us to
// re-create the final jar
append(sourceRootPath / "Foo.java", "\nclass FooTwo{}")
check(targets = OSet(jar), expected = OSet(allSources, classFiles, jar))
// Tweaking the resources forces rebuild of the final jar, without
// recompiling classfiles
append(resourceRootPath / "hello.txt", " ")
check(targets = OSet(jar), expected = OSet(jar))
// Asking for an intermediate target forces things to be build up to that
// target only; these are re-used for any downstream targets requested
append(sourceRootPath / "Bar.java", "\nclass BarTwo{}")
append(resourceRootPath / "hello.txt", " ")
check(targets = OSet(classFiles), expected = OSet(allSources, classFiles))
check(targets = OSet(jar), expected = OSet(jar))
check(targets = OSet(allSources), expected = OSet())
append(sourceRootPath / "Bar.java", "\nclass BarThree{}")
append(resourceRootPath / "hello.txt", " ")
check(targets = OSet(resourceRoot), expected = OSet())
check(targets = OSet(allSources), expected = OSet(allSources))
check(targets = OSet(jar), expected = OSet(classFiles, jar))
val jarContents = %%('jar, "-tf", workspacePath/'jar)(workspacePath).out.string
val expectedJarContents =
"""META-INF/MANIFEST.MF
|hello.txt
|test/Bar.class
|test/BarThree.class
|test/BarTwo.class
|test/Foo.class
|test/FooTwo.class
|""".stripMargin
assert(jarContents == expectedJarContents)
val executed = %%('java, "-cp", workspacePath/'jar, "test.Foo")(workspacePath).out.string
assert(executed == (31337 + 271828) + "\n")
for(i <- 0 until 3){
// Build.run is not cached, so every time we eval it it has to
// re-evaluate
val (runOutput, evalCount) = eval(Build.run("test.Foo"))
assert(
runOutput.out.string == (31337 + 271828) + "\n",
evalCount == 1
)
}
val ex = intercept[ammonite.ops.ShelloutException]{
eval(Build.run("test.BarFour"))
}
assert(ex.getMessage.contains("Could not find or load main class"))
append(
sourceRootPath / "Bar.java",
"""
class BarFour{
public static void main(String[] args){
System.out.println("New Cls!");
}
}
"""
)
val (runOutput2, evalCount2) = eval(Build.run("test.BarFour"))
assert(
runOutput2.out.string == "New Cls!\n",
evalCount2 == 3
)
val (runOutput3, evalCount3) = eval(Build.run("test.BarFour"))
assert(
runOutput3.out.string == "New Cls!\n",
evalCount3 == 1
)
}
}
}
|
