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/*
* Copyright (C) 2020 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package okio
import kotlinx.datetime.Clock
import okio.Path.Companion.toPath
import okio.fakefilesystem.FakeFileSystem
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertFailsWith
import kotlin.test.assertTrue
import kotlin.time.ExperimentalTime
@ExperimentalTime
@ExperimentalFileSystem
class ForwardingFileSystemTest : AbstractFileSystemTest(
clock = Clock.System,
fileSystem = object : ForwardingFileSystem(FakeFileSystem()) {},
windowsLimitations = false,
temporaryDirectory = "/".toPath()
) {
@Test
fun pathBlocking() {
val forwardingFileSystem = object : ForwardingFileSystem(fileSystem) {
override fun delete(path: Path) {
throw IOException("synthetic failure!")
}
override fun onPathParameter(path: Path, functionName: String, parameterName: String): Path {
if (path.name.contains("blocked")) throw IOException("blocked path!")
return path
}
}
forwardingFileSystem.createDirectory(base / "okay")
assertFailsWith<IOException> {
forwardingFileSystem.createDirectory(base / "blocked")
}
}
@Test
fun operationBlocking() {
val forwardingFileSystem = object : ForwardingFileSystem(fileSystem) {
override fun onPathParameter(path: Path, functionName: String, parameterName: String): Path {
if (functionName == "delete") throw IOException("blocked operation!")
return path
}
}
forwardingFileSystem.createDirectory(base / "operation-blocking")
assertFailsWith<IOException> {
forwardingFileSystem.delete(base / "operation-blocking")
}
}
@Test
fun pathMapping() {
val prefix = "/mapped"
val source = base / "source"
val mappedSource = (prefix + source).toPath()
val target = base / "target"
val mappedTarget = (prefix + target).toPath()
source.writeUtf8("hello, world!")
val forwardingFileSystem = object : ForwardingFileSystem(fileSystem) {
override fun onPathParameter(path: Path, functionName: String, parameterName: String): Path {
return path.toString().removePrefix(prefix).toPath()
}
override fun onPathResult(path: Path, functionName: String): Path {
return (prefix + path).toPath()
}
}
forwardingFileSystem.copy(mappedSource, mappedTarget)
assertTrue(target in fileSystem.list(base))
assertTrue(mappedTarget in forwardingFileSystem.list(base))
assertEquals("hello, world!", source.readUtf8())
assertEquals("hello, world!", target.readUtf8())
}
/**
* Path mapping might impact the sort order. Confirm that list() returns elements in sorted order
* even if that order is different in the delegate file system.
*/
@Test
fun pathMappingImpactedBySorting() {
val az = base / "az"
val by = base / "by"
val cx = base / "cx"
az.writeUtf8("az")
by.writeUtf8("by")
cx.writeUtf8("cx")
val forwardingFileSystem = object : ForwardingFileSystem(fileSystem) {
override fun onPathResult(path: Path, functionName: String): Path {
return path.parent!! / path.name.reversed()
}
}
assertEquals(fileSystem.list(base), listOf(base / "az", base / "by", base / "cx"))
assertEquals(forwardingFileSystem.list(base), listOf(base / "xc", base / "yb", base / "za"))
}
@Test
fun copyIsNotForwarded() {
val log = mutableListOf<String>()
val delegate = object : ForwardingFileSystem(fileSystem) {
override fun copy(source: Path, target: Path) {
throw AssertionError("unexpected call to copy()")
}
}
val forwardingFileSystem = object : ForwardingFileSystem(delegate) {
override fun onPathParameter(path: Path, functionName: String, parameterName: String): Path {
log += "$functionName($parameterName=$path)"
return path
}
}
val source = base / "source"
source.writeUtf8("hello, world!")
val target = base / "target"
forwardingFileSystem.copy(source, target)
assertTrue(target in fileSystem.list(base))
assertEquals("hello, world!", source.readUtf8())
assertEquals("hello, world!", target.readUtf8())
assertEquals(log, listOf("source(file=$source)", "sink(file=$target)"))
}
}
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