Add verifier

Used to check if target files have the expected hash. Using a
memory cache to not have to read source each time but falls back
to reading source if needed.

2 files changed, 61 insertions, 0 deletions

diff --git a/libs/io/src/test/java/org/the_jk/cleversync/io/HasherTest.kt b/libs/io/src/test/java/org/the_jk/cleversync/io/HasherTest.kt
new file mode 100644
index 0000000..02fd79a
--- /dev/null
+++ b/libs/io/src/test/java/org/the_jk/cleversync/io/HasherTest.kt
@@ -0,0 +1,42 @@
+package org.the_jk.cleversync.io
+
+import com.google.common.truth.Truth.assertThat
+import org.junit.Test
+import java.io.ByteArrayOutputStream
+import java.nio.charset.Charset
+
+@Suppress("MaxLineLength")
+class HasherTest {
+    @Test
+    fun empty() {
+        check("", "da39a3ee5e6b4b0d3255bfef95601890afd80709")
+        check("", "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f")
+        check("", "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")
+        check("", "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da274edebfe76f65fbd51ad2f14898b95b")
+        check("", "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e")
+    }
+
+    @Test
+    fun known() {
+        check("The quick brown fox jumps over the lazy dog", "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12")
+        check("The quick brown fox jumps over the lazy cog", "de9f2c7fd25e1b3afad3e85a0bd17d9b100db4b3")
+        check("The quick brown fox jumps over the lazy dog", "730e109bd7a8a32b1cb9d9a09aa2325d2430587ddbc0c38bad911525")
+        check("The quick brown fox jumps over the lazy dog.", "619cba8e8e05826e9b8c519c0a5c68f4fb653e8a3d8aa04bb2c8cd4c")
+    }
+
+    private companion object {
+        fun check(input: String, hash: String) {
+            val format = Hasher.getFormat(hash)
+            input.toByteArray().inputStream().use {
+                assertThat(Hasher.hash(it, format)).isEqualTo(hash)
+            }
+            val byteStream = ByteArrayOutputStream()
+            val hashStream = Hasher.wrap(byteStream, format)
+            hashStream.use {
+                it.write(input.toByteArray())
+            }
+            assertThat(hashStream.hash()).isEqualTo(hash)
+            assertThat(byteStream.toByteArray().toString(Charset.defaultCharset())).isEqualTo(input)
+        }
+    }
+}
diff --git a/libs/io/src/test/java/org/the_jk/cleversync/io/VerifierLocalTest.kt b/libs/io/src/test/java/org/the_jk/cleversync/io/VerifierLocalTest.kt
new file mode 100644
index 0000000..3576d15
--- /dev/null
+++ b/libs/io/src/test/java/org/the_jk/cleversync/io/VerifierLocalTest.kt
@@ -0,0 +1,19 @@
+package org.the_jk.cleversync.io
+
+import org.junit.Rule
+import org.junit.rules.TemporaryFolder
+import org.the_jk.cleversync.local.LocalTreeFactory
+
+class VerifierLocalTest : BaseVerifierTest() {
+    @Rule
+    @JvmField
+    val temp = TemporaryFolder()
+
+    override fun source(): ModifiableTree {
+        return LocalTreeFactory.modifiableTree(temp.newFolder("source").toPath())
+    }
+
+    override fun target(): ModifiableTree {
+        return LocalTreeFactory.modifiableTree(temp.newFolder("target").toPath())
+    }
+}