svn: Fix "Url.toString()" for "file:///" urls

plugins/svn4idea/src/org/jetbrains/idea/svn/api/Url.kt

@@ -8,6 +8,8 @@ import org.jetbrains.idea.svn.commandLine.SvnBindException
 import java.net.URI
 import java.net.URISyntaxException
 
+private const val FILE_URL_PREFIX = "file:/"
+
 class Url private constructor(innerUri: URI) {
   private val uri = fixDefaultPort(innerUri)
 
@@ -47,9 +49,13 @@ class Url private constructor(innerUri: URI) {
 
   override fun hashCode() = uri.hashCode()
 
-  override fun toString() = uri.toASCIIString().removeSuffix("/")
+  override fun toString() = fixFileUrlToString(uri.toASCIIString().removeSuffix("/"))
   fun toDecodedString() = URLUtil.unescapePercentSequences(toString())
 
+  private fun fixFileUrlToString(url: String) = if (url.startsWith(FILE_URL_PREFIX) && !url.startsWith(
+      "$FILE_URL_PREFIX/")) "$FILE_URL_PREFIX//${url.substring(FILE_URL_PREFIX.length)}"
+  else url
+
   companion object {
     @JvmField
     val EMPTY = Url(URI(""))

plugins/svn4idea/testSource/org/jetbrains/idea/svn/api/UrlTest.kt

@@ -33,6 +33,18 @@ class UrlTest {
     assertEquals("http://aaa/b b", Url.parse("http://aaa/b%20b").toDecodedString())
   }
 
+  @Test
+  fun `file protocol to string`() {
+    assertEquals("file://localhost/home", Url.parse("file://localhost/home").toString())
+    assertEquals("file://localhost/home/aaa", Url.parse("file://localhost/home").appendPath("aaa").toString())
+
+    assertEquals("file:///home", Url.parse("file:///home").toString())
+    assertEquals("file:///home/aaa", Url.parse("file:///home").appendPath("aaa").toString())
+
+    assertEquals("file:///C:/svn", Url.parse("file:///C:/svn").toString())
+    assertEquals("file:///C:/svn/aaa", Url.parse("file:///C:/svn").appendPath("aaa").toString())
+  }
+
   @Test
   fun `append path`() {
     val url = Url.parse("http://aaa")