Set up Python parse compat

Cargo.toml

@@ -5,4 +5,3 @@ authors = ["Bradlee Speice <bspeice@kcg.com>"]
 
 [dependencies]
 chrono = "0.4"
-chrono-tz = "0.4"

build_tests.py

@@ -1,5 +1,7 @@
 #import dateutil.parser._timelex.split as time_split
 from dateutil.parser import _timelex
+from dateutil.parser import parse as duparse
+import pytz
 
 # The TEST_STRINGS list should be the only thing that actually needs changing
 TEST_STRINGS = [
@@ -12,7 +14,7 @@ S4 = ' ' * 4
 S8 = ' ' * 8
 S12 = ' ' * 12
 
-def test_string_to_rust(time_string):
+def rust_tokenize(time_string):
     split_array = _timelex.split(time_string)
 
     def translate_token(token):
@@ -28,9 +30,9 @@ def test_string_to_rust(time_string):
 
     return [translate_token(t) for t in split_array]
 
-def main():
-    header = '''use super::Token;
-use super::tokenize;
+def build_split_string_tests():
+    header = '''use ::Token;
+use ::tokenize;
 
 #[test]
 fn test_python_compat() {\n'''
@@ -39,7 +41,7 @@ fn test_python_compat() {\n'''
 
     for test_string in TEST_STRINGS:
         token_string = '\n'.join(['{}{},'.format(S12, s)
-                                  for s in test_string_to_rust(test_string)])
+                                  for s in rust_tokenize(test_string)])
         tests.append('    assert_eq!(\n{}tokenize("{}"),\n{}vec![\n{}\n{}]\n{});'
                      .format(S8, test_string, S8, token_string, S8, S4))
 
@@ -47,10 +49,35 @@ fn test_python_compat() {\n'''
 
     footer = '\n}\n'
 
-    with open('src/test_python_compat.rs', 'w') as handle:
-        handle.write(header)
-        handle.write(body)
-        handle.write(footer)
+    return header + body + footer
+
+def test_parse(time_string):
+    dt = duparse(time_string)
+    # TODO: Don't make this dependent on New_York
+    iso8601 = pytz.timezone('America/New_York').localize(dt).astimezone(pytz.utc)
+    return 'assert_eq!(\n{}parse("{}".to_owned())\n{}.unwrap()\n{}.to_rfc3339_opts(SecondsFormat::Micros, false),\n{}"{}"\n{});'.format(
+        S8, time_string, S12, S12, S8, iso8601, S4)
+
+def build_parse_tests():
+    header = '''use chrono::SecondsFormat;
+
+use parse;
+
+#[test]
+fn test_python_compat() {\n'''
+
+    asserts = ['    {}'.format(test_parse(a)) for a in TEST_STRINGS]
+    body = '\n'.join(asserts)
+
+    footer = '\n}\n'
+
+    return header + body + footer
 
 if __name__ == '__main__':
-    main()
+    split_string_test = build_split_string_tests()
+    with open('src/tests/compat_split_string.rs', 'w+') as handle:
+        handle.write(split_string_test)
+
+    parse_test = build_parse_tests()
+    with open('src/tests/compat_parse.rs', 'w+') as handle:
+        handle.write(parse_test)

src/lib.rs

@@ -9,8 +9,6 @@ use chrono::Utc;
 use std::collections::HashMap;
 use std::vec::Vec;
 
-#[cfg(test)]
-mod test_python_compat;
 #[cfg(test)]
 mod tests;
 
@@ -674,9 +672,7 @@ impl Default for Parser {
 
 impl Parser {
     pub fn new(info: ParserInfo) -> Self {
-        Parser {
-            info: info
-        }
+        Parser { info: info }
     }
 
     pub fn parse(
@@ -692,34 +688,43 @@ impl Parser {
         let default_ts = NaiveDateTime::new(default_date, NaiveTime::from_hms(0, 0, 0));
 
         // TODO: What should be done with the tokens?
-        let (res, tokens) = self.parse_with_tokens(
-            timestr, self.info.dayfirst, self.info.yearfirst, true, true)?;
+        let (res, tokens) =
+            self.parse_with_tokens(timestr, self.info.dayfirst, self.info.yearfirst, true, true)?;
 
         let naive = self.build_naive(&res, default_ts);
         Ok(self.build_tzaware(naive, &res, default_ts))
     }
 
-    fn parse_with_tokens(&self, timestr: String, dayfirst: bool, yearfirst: bool, fuzzy: bool,
-    fuzzy_with_tokens: bool) -> Result<(ParsingResult, Vec<String>), ParseError> {
-
+    fn parse_with_tokens(
+        &self,
+        timestr: String,
+        dayfirst: bool,
+        yearfirst: bool,
+        fuzzy: bool,
+        fuzzy_with_tokens: bool,
+    ) -> Result<(ParsingResult, Vec<String>), ParseError> {
         Err(ParseError::InvalidMonth)
     }
 
     fn build_naive(&self, res: &ParsingResult, default: NaiveDateTime) -> NaiveDateTime {
-
         Local::now().naive_local()
     }
 
-    fn build_tzaware(&self, dt: NaiveDateTime, res: &ParsingResult, default: NaiveDateTime) -> DateTime<Utc> {
-
+    fn build_tzaware(
+        &self,
+        dt: NaiveDateTime,
+        res: &ParsingResult,
+        default: NaiveDateTime,
+    ) -> DateTime<Utc> {
         Utc::now()
     }
 }
 
-fn parse(timestr: String, parserinfo: Option<ParserInfo>) -> Result<DateTime<Utc>, ParseError> {
-
-    let parserinfo = parserinfo.unwrap_or(ParserInfo::default());
-    let parser = Parser::new(parserinfo);
-
+fn parse_with_info(timestr: String, info: ParserInfo) -> Result<DateTime<Utc>, ParseError> {
+    let parser = Parser::new(info);
     parser.parse(timestr, None, false, vec![])
 }
+
+fn parse(timestr: String) -> Result<DateTime<Utc>, ParseError> {
+    parse_with_info(timestr, ParserInfo::default())
+}

src/tests.rs

@@ -1,11 +0,0 @@
-use ParseError;
-use days_in_month;
-
-#[test]
-fn test_num_days_in_month() {
-    assert_eq!(days_in_month(2000, 12), Ok(31));
-    assert_eq!(days_in_month(2000, 2), Ok(29));
-    assert_eq!(days_in_month(2000, 4), Ok(30));
-    assert_eq!(days_in_month(2001, 2), Ok(28));
-    assert_eq!(days_in_month(2000, 13), Err(ParseError::InvalidMonth))
-}

src/tests/compat_parse.rs

@@ -0,0 +1,25 @@
+use chrono::SecondsFormat;
+
+use parse;
+
+#[test]
+fn test_python_compat() {
+    assert_eq!(
+        parse("2018.5.15".to_owned())
+            .unwrap()
+            .to_rfc3339_opts(SecondsFormat::Micros, false),
+        "2018-05-15 04:00:00+00:00"
+    );
+    assert_eq!(
+        parse("May 5, 2018".to_owned())
+            .unwrap()
+            .to_rfc3339_opts(SecondsFormat::Micros, false),
+        "2018-05-05 04:00:00+00:00"
+    );
+    assert_eq!(
+        parse("Mar. 5, 2018".to_owned())
+            .unwrap()
+            .to_rfc3339_opts(SecondsFormat::Micros, false),
+        "2018-03-05 05:00:00+00:00"
+    );
+}

src/tests/compat_split_string.rs

@@ -1,5 +1,5 @@
-use super::Token;
-use super::tokenize;
+use Token;
+use tokenize;
 
 #[test]
 fn test_python_compat() {

src/tests/mod.rs

@@ -0,0 +1,2 @@
+mod compat_parse;
+mod compat_split_string;