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/*
* Copyright (C) 2021 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 kotlin.test.fail
import okio.internal.FixedLengthSource
import org.assertj.core.api.Assertions.assertThat
import org.junit.Test
internal class FixedLengthSourceTest {
@Test
fun happyPathWithTruncate() {
val delegate = Buffer().writeUtf8("abcdefghijklmnop")
val fixedLengthSource = FixedLengthSource(delegate, 16, truncate = true)
val buffer = Buffer()
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(10L)
assertThat(buffer.readUtf8()).isEqualTo("abcdefghij")
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(6L)
assertThat(buffer.readUtf8()).isEqualTo("klmnop")
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(-1L)
assertThat(buffer.readUtf8()).isEqualTo("")
}
@Test
fun happyPathNoTruncate() {
val delegate = Buffer().writeUtf8("abcdefghijklmnop")
val fixedLengthSource = FixedLengthSource(delegate, 16, truncate = false)
val buffer = Buffer()
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(10L)
assertThat(buffer.readUtf8()).isEqualTo("abcdefghij")
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(6L)
assertThat(buffer.readUtf8()).isEqualTo("klmnop")
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(-1L)
assertThat(buffer.readUtf8()).isEqualTo("")
}
@Test
fun delegateTooLongWithTruncate() {
val delegate = Buffer().writeUtf8("abcdefghijklmnopqr")
val fixedLengthSource = FixedLengthSource(delegate, 16, truncate = true)
val buffer = Buffer()
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(10L)
assertThat(buffer.readUtf8()).isEqualTo("abcdefghij")
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(6L)
assertThat(buffer.readUtf8()).isEqualTo("klmnop")
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(-1L)
assertThat(buffer.readUtf8()).isEqualTo("")
}
@Test
fun delegateTooLongWithTruncateFencepost() {
val delegate = Buffer().writeUtf8("abcdefghijklmnop")
val fixedLengthSource = FixedLengthSource(delegate, 10, truncate = true)
val buffer = Buffer()
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(10L)
assertThat(buffer.readUtf8()).isEqualTo("abcdefghij")
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(-1L)
assertThat(buffer.readUtf8()).isEmpty()
}
@Test
fun delegateTooLongNoTruncate() {
val delegate = Buffer().writeUtf8("abcdefghijklmnopqr")
val fixedLengthSource = FixedLengthSource(delegate, 16, truncate = false)
val buffer = Buffer()
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(10L)
assertThat(buffer.readUtf8()).isEqualTo("abcdefghij")
try {
fixedLengthSource.read(buffer, 10L)
fail()
} catch (e: IOException) {
assertThat(e).hasMessage("expected 16 bytes but got 18")
assertThat(buffer.readUtf8()).isEqualTo("klmnop") // Doesn't produce too many bytes!
}
try {
fixedLengthSource.read(buffer, 10L)
fail()
} catch (e: IOException) {
assertThat(e).hasMessage("expected 16 bytes but got 18")
assertThat(buffer.readUtf8()).isEmpty() // Doesn't produce any bytes!
}
}
@Test
fun delegateTooLongNoTruncateFencepost() {
val delegate = Buffer().writeUtf8("abcdefghijklmnop")
val fixedLengthSource = FixedLengthSource(delegate, 10, truncate = false)
val buffer = Buffer()
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(10L)
assertThat(buffer.readUtf8()).isEqualTo("abcdefghij")
try {
fixedLengthSource.read(buffer, 10L)
fail()
} catch (e: IOException) {
assertThat(e).hasMessage("expected 10 bytes but got 16")
assertThat(buffer.readUtf8()).isEmpty() // Doesn't produce too many bytes!
}
try {
fixedLengthSource.read(buffer, 10L)
fail()
} catch (e: IOException) {
assertThat(e).hasMessage("expected 10 bytes but got 16")
assertThat(buffer.readUtf8()).isEmpty() // Doesn't produce any bytes!
}
}
@Test
fun delegateTooShortWithTruncate() {
val delegate = Buffer().writeUtf8("abcdefghijklmn")
val fixedLengthSource = FixedLengthSource(delegate, 16, truncate = true)
val buffer = Buffer()
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(10L)
assertThat(buffer.readUtf8()).isEqualTo("abcdefghij")
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(4L)
assertThat(buffer.readUtf8()).isEqualTo("klmn")
try {
fixedLengthSource.read(buffer, 10L)
fail()
} catch (e: IOException) {
assertThat(e).hasMessage("expected 16 bytes but got 14")
}
try {
fixedLengthSource.read(buffer, 10L)
fail()
} catch (e: IOException) {
assertThat(e).hasMessage("expected 16 bytes but got 14")
}
}
@Test
fun delegateTooShortNoTruncate() {
val delegate = Buffer().writeUtf8("abcdefghijklmn")
val fixedLengthSource = FixedLengthSource(delegate, 16, truncate = false)
val buffer = Buffer()
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(10L)
assertThat(buffer.readUtf8()).isEqualTo("abcdefghij")
assertThat(fixedLengthSource.read(buffer, 10L)).isEqualTo(4L)
assertThat(buffer.readUtf8()).isEqualTo("klmn")
try {
fixedLengthSource.read(buffer, 10L)
fail()
} catch (e: IOException) {
assertThat(e).hasMessage("expected 16 bytes but got 14")
}
try {
fixedLengthSource.read(buffer, 10L)
fail()
} catch (e: IOException) {
assertThat(e).hasMessage("expected 16 bytes but got 14")
}
}
}
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