Change string contains operators to regex (#5117)

src/tests.rs

@@ -9,6 +9,7 @@ mod test_math;
 mod test_modules;
 mod test_parser;
 mod test_ranges;
+mod test_regex;
 mod test_strings;
 mod test_table_operations;
 mod test_type_check;

src/tests/test_regex.rs

@@ -0,0 +1,82 @@
+use crate::tests::{fail_test, run_test, TestResult};
+
+#[test]
+fn contains() -> TestResult {
+    run_test(r#"'foobarbaz' =~ bar"#, "true")
+}
+
+#[test]
+fn contains_case_insensitive() -> TestResult {
+    run_test(r#"'foobarbaz' =~ '(?i)BaR'"#, "true")
+}
+
+#[test]
+fn not_contains() -> TestResult {
+    run_test(r#"'foobarbaz' !~ asdf"#, "true")
+}
+
+#[test]
+fn match_full_line() -> TestResult {
+    run_test(r#"'foobarbaz' =~ '^foobarbaz$'"#, "true")
+}
+
+#[test]
+fn not_match_full_line() -> TestResult {
+    run_test(r#"'foobarbaz' !~ '^foobarbaz$'"#, "false")
+}
+
+#[test]
+fn starts_with() -> TestResult {
+    run_test(r#"'foobarbaz' =~ '^foo'"#, "true")
+}
+
+#[test]
+fn not_starts_with() -> TestResult {
+    run_test(r#"'foobarbaz' !~ '^foo'"#, "false")
+}
+
+#[test]
+fn ends_with() -> TestResult {
+    run_test(r#"'foobarbaz' =~ 'baz$'"#, "true")
+}
+
+#[test]
+fn not_ends_with() -> TestResult {
+    run_test(r#"'foobarbaz' !~ 'baz$'"#, "false")
+}
+
+#[test]
+fn where_works() -> TestResult {
+    run_test(
+        r#"[{name: somefile.txt} {name: anotherfile.csv }] | where name =~ ^s | get name.0"#,
+        "somefile.txt",
+    )
+}
+
+#[test]
+fn where_not_works() -> TestResult {
+    run_test(
+        r#"[{name: somefile.txt} {name: anotherfile.csv }] | where name !~ ^s | get name.0"#,
+        "anotherfile.csv",
+    )
+}
+
+#[test]
+fn invalid_regex_fails() -> TestResult {
+    fail_test(r#"'foo' =~ '['"#, "regex parse error")
+}
+
+#[test]
+fn invalid_not_regex_fails() -> TestResult {
+    fail_test(r#"'foo' !~ '['"#, "regex parse error")
+}
+
+#[test]
+fn regex_on_int_fails() -> TestResult {
+    fail_test(r#"33 =~ foo"#, "Types mismatched")
+}
+
+#[test]
+fn not_regex_on_int_fails() -> TestResult {
+    fail_test(r#"33 !~ foo"#, "Types mismatched")
+}