TisonKun commented on a change in pull request #6450: [FLINK-9991] Add
regex_replace supported in TableAPI and SQL
URL: https://github.com/apache/flink/pull/6450#discussion_r205989801
##########
File path:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/expressions/ScalarFunctionsTest.scala
##########
@@ -450,6 +450,39 @@ class ScalarFunctionsTest extends ScalarTypesTestBase {
"1111111111111111111111111111111111111111111111111111111111111111")
}
+ @Test
+ def testRegexReplace(): Unit = {
+ testAllApis(
+ "foobar".regexReplace("oo|ar", ""),
+ "'foobar'.regexReplace('oo|ar', '')",
+ "regex_replace('foobar', 'oo|ar', '')",
+ "fb")
+
+ testAllApis(
+ "foobar".regexReplace("oo|ar", "abc"),
+ "'foobar'.regexReplace('oo|ar', 'abc')",
+ "regex_replace('foobar', 'oo|ar', 'abc')",
+ "fabcbabc")
+
+ testAllApis(
+ 'f33.regexReplace("oo|ar", ""),
+ "f33.regexReplace('oo|ar', '')",
+ "REGEX_REPLACE(f33, 'oo|ar', '')",
+ "null")
+
+ testAllApis(
+ "foobar".regexReplace('f33, ""),
+ "'foobar'.regexReplace(f33, '')",
+ "REGEX_REPLACE('foobar', f33, '')",
+ "null")
+
+ testAllApis(
+ "foobar".regexReplace("oo|ar", 'f33),
+ "'foobar'.regexReplace('oo|ar', f33)",
+ "REGEX_REPLACE('foobar', 'oo|ar', f33)",
+ "null")
+ }
+
Review comment:
what about `"fooor".regexReplace("oo", "")`? is it `"for"` or `"fr"`? the
problem is what about the complicated/corner case, which maybe worth a test to
cover it.
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