SNOW-1846830 allow triple slash file prefix (file:///)

src/main/java/net/snowflake/client/jdbc/SnowflakeFileTransferAgent.java

@@ -1865,7 +1865,7 @@ private void uploadFiles(Set<String> fileList, int parallel) throws SnowflakeSQL
         threadExecutor.submit(
             getUploadFileCallable(
                 stageInfo,
-                srcFile,
+                srcFileObj.getPath(),
                 fileMetadata,
                 (stageInfo.getStageType() == StageInfo.StageType.LOCAL_FS)
                     ? null

src/test/java/net/snowflake/client/jdbc/FileUploaderLatestIT.java

@@ -871,4 +871,29 @@ public void testUploadWithTildeInPath() throws SQLException, IOException {
       FileUtils.deleteDirectory(subDir.toFile());
     }
   }
+
+  @Test
+  public void testUploadWithTripleSlashFilePrefix() throws SQLException {
+    try (Connection connection = getConnection();
+        Statement statement = connection.createStatement()) {
+      try {
+        statement.execute("CREATE OR REPLACE STAGE testStage");
+        SFSession sfSession = connection.unwrap(SnowflakeConnectionV1.class).getSfSession();
+
+        String command = "PUT file:///" + getFullPathFileInResource(TEST_DATA_FILE) + " @testStage";
+        SnowflakeFileTransferAgent sfAgent =
+            new SnowflakeFileTransferAgent(command, sfSession, new SFStatement(sfSession));
+        assertTrue(sfAgent.execute());
+
+        String getCommand = "GET @testStage file:///tmp";
+        SnowflakeFileTransferAgent sfAgent1 =
+            new SnowflakeFileTransferAgent(getCommand, sfSession, new SFStatement(sfSession));
+        assertTrue(sfAgent1.execute());
+        assertEquals(1, sfAgent1.statusRows.size());
+      } finally {
+        statement.execute("DROP STAGE if exists testStage");
+      }
+    }
+    SnowflakeFileTransferAgent.setInjectedFileTransferException(null);
+  }
 }