Added test [#CLICKHOUSE-2778].

dbms/tests/queries/0_stateless/00418_input_format_allow_errors.reference

+1	Hello
+3	Goodbye
+27
+1	Hello
+3	Goodbye
+1	Hello
+3	Goodbye
+27
+1	Hello
+3	Goodbye
+1	Hello
+3	Goodbye
+1	Hello
+3	Goodbye

dbms/tests/queries/0_stateless/00418_input_format_allow_errors.sh

+#!/usr/bin/env bash
+
+clickhouse-client --query="DROP TABLE IF EXISTS test.formats_test"
+clickhouse-client --query="CREATE TABLE test.formats_test (x UInt64, s String) ENGINE = Memory"
+
+echo -ne '1\tHello\n \n3\tGoodbye\n' | clickhouse-client --input_format_allow_errors_num=1 --input_format_allow_errors_ratio=0.1 --query="INSERT INTO test.formats_test FORMAT TSV"
+
+clickhouse-client --query="SELECT * FROM test.formats_test"
+
+echo -ne '1\tHello\n2\n3\tGoodbye\n\n' | clickhouse-client --input_format_allow_errors_num=1 --input_format_allow_errors_ratio=0.1 --query="INSERT INTO test.formats_test FORMAT TSV" 2> /dev/null; echo $?
+
+echo -ne '1\tHello\n2\n3\tGoodbye\n\n' | clickhouse-client --input_format_allow_errors_num=2 --input_format_allow_errors_ratio=0.1 --query="INSERT INTO test.formats_test FORMAT TSV"
+
+clickhouse-client --query="SELECT * FROM test.formats_test"
+
+echo -ne '1\tHello\n2\n3\tGoodbye\n\n' | clickhouse-client --input_format_allow_errors_num=1 --input_format_allow_errors_ratio=0.4 --query="INSERT INTO test.formats_test FORMAT TSV" 2> /dev/null; echo $?
+
+echo -ne '1\tHello\n2\n3\tGoodbye\n\n' | clickhouse-client --input_format_allow_errors_num=1 --input_format_allow_errors_ratio=0.6 --query="INSERT INTO test.formats_test FORMAT TSV"
+
+clickhouse-client --query="SELECT * FROM test.formats_test"
+
+clickhouse-client --query="DROP TABLE test.formats_test"