From 7d152c8031eb56404b88cc61251e95c649a66417 Mon Sep 17 00:00:00 2001
From: Tatu Saloranta <tatu.saloranta@iki.fi>
Date: Thu, 16 Apr 2020 21:25:32 -0700
Subject: [PATCH] Add failing (for 2.10.x) test for #174

---
 .../csv/failing/SkipEmptyLines174Test.java    | 83 +++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 csv/src/test/java/com/fasterxml/jackson/dataformat/csv/failing/SkipEmptyLines174Test.java

diff --git a/csv/src/test/java/com/fasterxml/jackson/dataformat/csv/failing/SkipEmptyLines174Test.java b/csv/src/test/java/com/fasterxml/jackson/dataformat/csv/failing/SkipEmptyLines174Test.java
new file mode 100644
index 00000000..646f9532
--- /dev/null
+++ b/csv/src/test/java/com/fasterxml/jackson/dataformat/csv/failing/SkipEmptyLines174Test.java
@@ -0,0 +1,83 @@
+package com.fasterxml.jackson.dataformat.csv.failing;
+
+import java.io.*;
+import java.util.Random;
+
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+import com.fasterxml.jackson.databind.*;
+import com.fasterxml.jackson.dataformat.csv.*;
+
+public class SkipEmptyLines174Test extends ModuleTestBase
+{
+    private final static CsvMapper MAPPER = new CsvMapper();
+
+    @JsonPropertyOrder({ "timestamp", "random" })
+    static class Row {
+        private int timestamp;
+        private String random;
+
+        public int getTimestamp() {
+            return timestamp;
+        }
+
+        public void setTimestamp(int timestamp) {
+            this.timestamp = timestamp;
+        }
+
+        public String getRandom() {
+            return random;
+        }
+
+        public void setRandom(String random) {
+            this.random = random;
+        }
+
+        @Override
+        public String toString() {
+            return "Row{timestamp=" + timestamp + ", random='" + random + "'}";
+        }
+    }
+
+    public void testEmptyLines174() throws Exception
+    {
+        String doc = generateCsvFile();
+        ObjectReader objectReader = MAPPER
+                .enable(CsvParser.Feature.SKIP_EMPTY_LINES)
+                .readerFor(Row.class)
+                .with(MAPPER.schemaFor(Row.class));
+        int lineCount = 0;
+        MappingIterator<Row> iterator = objectReader.readValues(doc);
+        Row data = null;
+        while (iterator.hasNext()) {
+            ++lineCount;
+            try {
+                data = iterator.next();
+            } catch (Exception e) {
+//            System.out.println(lineCount + " : " + data);
+                fail("Failed on row #"+lineCount+", previous row: "+data);
+            }
+        }
+        iterator.close();
+    }
+
+    private String generateCsvFile() throws Exception {
+        final StringWriter sw = new StringWriter(50000);
+        int lineCount = 0;
+        final Random rnd = new Random();
+
+        while (lineCount < 4000) {
+            sw.append("\"" + System.currentTimeMillis()/1000 + "\",\"" + randomString(rnd) + "\"\n");
+            ++lineCount;
+        }
+        return sw.toString();
+    }
+
+    private String randomString(Random rnd) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < 10; ++i) {
+            sb.append((char) ('A' + (rnd.nextInt() & 0xF)));
+        }
+        return sb.toString();
+    }
+}