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oxedyne/fe2o3/fe2o3_datime/tests/relative_date_parsing_demo.rs

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1//! Comprehensive demonstration of relative date parsing functionality.
2//!
3//! This test demonstrates the advanced natural language relative date parsing
4//! capabilities that allow users to express dates in intuitive, human-friendly ways.
5//!
6//! [Written with AI entirely](https://need2know.ai/entirely-ai/code)\
7//! Anthropic Claude
8
9use oxedyne_fe2o3_core::prelude::*;
10use oxedyne_fe2o3_datime::{
11 parser::Parser,
12 calendar::CalendarDate,
13 constant::{DayOfWeek, MonthOfYear},
14 time::CalClockZone,
15};
16
17#[test]
18fn test_comprehensive_relative_date_parsing() -> Outcome<()> {
19 println!("=== Comprehensive Relative Date Parsing Demo ===");
20
21 let zone = CalClockZone::utc();
22 // Use a fixed base date for predictable testing: Wednesday, June 12, 2024
23 let base_date = res!(CalendarDate::from_ymd(2024, MonthOfYear::June, 12, zone.clone()));
24
25 println!("📅 Base date for testing: {} ({})", base_date, base_date.day_of_week());
26
27 // Test 1: Simple day-of-week relative dates
28 println!("\n🗓️ Test 1: Simple Day-of-Week Relative Dates");
29
30 let test_cases_dow = [
31 ("next Tuesday", "Tuesday, June 18, 2024"),
32 ("last Friday", "Friday, June 7, 2024"),
33 ("this Monday", "Monday, June 10, 2024"),
34 ("next Monday", "Monday, June 17, 2024"),
35 ("last Monday", "Monday, June 3, 2024"),
36 ("this Wednesday", "Wednesday, June 12, 2024"), // Today
37 ("next Wednesday", "Wednesday, June 19, 2024"),
38 ];
39
40 for (input, expected_description) in &test_cases_dow {
41 let result = res!(Parser::parse_relative_date_from(input, &base_date, zone.clone()));
42 println!(" '{}' → {} ({})", input, result, result.day_of_week());
43
44 // Verify the day of week is correct
45 let expected_day = match input {
46 s if s.contains("Tuesday") => DayOfWeek::Tuesday,
47 s if s.contains("Friday") => DayOfWeek::Friday,
48 s if s.contains("Monday") => DayOfWeek::Monday,
49 s if s.contains("Wednesday") => DayOfWeek::Wednesday,
50 _ => panic!("Unexpected day in test case"),
51 };
52 assert_eq!(result.day_of_week(), expected_day, "Day of week mismatch for '{}'", input);
53 }
54
55 // Test 2: Quantified relative dates (days, weeks, months, years)
56 println!("\n📊 Test 2: Quantified Relative Dates");
57
58 let test_cases_quantified = [
59 ("in 3 days", 15), // June 15, 2024
60 ("3 days ago", 9), // June 9, 2024
61 ("in 1 week", 19), // June 19, 2024
62 ("2 weeks ago", 29), // May 29, 2024 (previous month)
63 ("in 2 weeks", 26), // June 26, 2024
64 ];
65
66 for (input, expected_day) in &test_cases_quantified {
67 let result = res!(Parser::parse_relative_date_from(input, &base_date, zone.clone()));
68 println!(" '{}' → {} (day {})", input, result, result.day());
69
70 // For simple day calculations, verify the day matches
71 if input.contains("days") && !input.contains("weeks") {
72 assert_eq!(result.day(), *expected_day as u8, "Day mismatch for '{}'", input);
73 }
74 }
75
76 // Test 3: Month and year relative dates
77 println!("\n📆 Test 3: Month and Year Relative Dates");
78
79 let month_cases = [
80 ("next month", 7, 12), // July 12, 2024
81 ("last month", 5, 12), // May 12, 2024
82 ("in 2 months", 8, 12), // August 12, 2024
83 ("3 months ago", 3, 12), // March 12, 2024
84 ("next year", 6, 12), // June 12, 2025
85 ("last year", 6, 12), // June 12, 2023
86 ];
87
88 for (input, expected_month, expected_day) in &month_cases {
89 let result = res!(Parser::parse_relative_date_from(input, &base_date, zone.clone()));
90 println!(" '{}' → {}", input, result);
91
92 if input.contains("month") {
93 assert_eq!(result.month(), *expected_month, "Month mismatch for '{}'", input);
94 assert_eq!(result.day(), *expected_day as u8, "Day mismatch for '{}'", input);
95 }
96 }
97
98 // Test 4: Period boundaries (beginning/end of periods)
99 println!("\n🏁 Test 4: Period Boundaries");
100
101 let boundary_cases = [
102 ("end of this month", 6, 30), // June 30, 2024
103 ("beginning of next month", 7, 1), // July 1, 2024
104 ("end of next month", 7, 31), // July 31, 2024
105 ("beginning of this year", 1, 1), // January 1, 2024
106 ("end of this year", 12, 31), // December 31, 2024
107 ];
108
109 for (input, expected_month, expected_day) in &boundary_cases {
110 let result = res!(Parser::parse_relative_date_from(input, &base_date, zone.clone()));
111 println!(" '{}' → {}", input, result);
112
113 assert_eq!(result.month(), *expected_month, "Month mismatch for '{}'", input);
114 assert_eq!(result.day(), *expected_day as u8, "Day mismatch for '{}'", input);
115 }
116
117 // Test 5: Complex expressions
118 println!("\n🧩 Test 5: Complex Expressions");
119
120 // Test the parser's detailed output
121 let complex_cases = [
122 "the Tuesday after next",
123 "2 weeks from now",
124 "end of this month",
125 "beginning of next quarter",
126 ];
127
128 for input in &complex_cases {
129 if let Ok((expression, calculated_date)) = Parser::parse_relative_date_detailed(input, zone.clone()) {
130 println!(" '{}' →", input);
131 println!(" Expression: {:?}", expression);
132 println!(" Calculated: {} ({})", calculated_date, calculated_date.day_of_week());
133 } else {
134 // Some expressions might not be fully implemented yet
135 println!(" '{}' → [Not yet supported]", input);
136 }
137 }
138
139 // Test 6: Integration with main parser
140 println!("\n🔗 Test 6: Integration with Main Parser");
141
142 let parser_integration_cases = [
143 "next Tuesday",
144 "in 2 weeks",
145 "last Friday",
146 "3 days ago",
147 ];
148
149 for input in &parser_integration_cases {
150 // Test that relative dates work through the main parse_date function
151 if let Ok(result) = Parser::parse_date(input, zone.clone()) {
152 println!(" Parser::parse_date('{}') → {}", input, result);
153 } else {
154 println!(" Parser::parse_date('{}') → [Failed]", input);
155 }
156
157 // Test that relative dates work through the main parse_datetime function
158 if let Ok(result) = Parser::parse_datetime(input, zone.clone()) {
159 println!(" Parser::parse_datetime('{}') → {}", input, result);
160 }
161 }
162
163 // Test 7: Edge cases and error handling
164 println!("\n⚠️ Test 7: Edge Cases and Error Handling");
165
166 let edge_cases = [
167 ("invalid relative expression", false),
168 ("next Funday", false), // Invalid day name
169 ("in 0 days", true), // Edge case but should work
170 ("", false), // Empty input
171 ("random text", false), // Non-relative text
172 ];
173
174 for (input, should_succeed) in &edge_cases {
175 match Parser::parse_relative_date_from(input, &base_date, zone.clone()) {
176 Ok(result) => {
177 if *should_succeed {
178 println!(" '{}' → {} ✓", input, result);
179 } else {
180 println!(" '{}' → {} (unexpected success)", input, result);
181 }
182 },
183 Err(_) => {
184 if *should_succeed {
185 println!(" '{}' → Failed (unexpected)", input);
186 } else {
187 println!(" '{}' → Failed ✓", input);
188 }
189 }
190 }
191 }
192
193 // Test 8: Cross-month and cross-year boundaries
194 println!("\n🌍 Test 8: Cross-Month and Cross-Year Boundaries");
195
196 // Test from end of month
197 let end_of_month = res!(CalendarDate::from_ymd(2024, MonthOfYear::January, 31, zone.clone()));
198 let next_month_from_end = res!(Parser::parse_relative_date_from("next month", &end_of_month, zone.clone()));
199 println!(" From Jan 31: 'next month' → {}", next_month_from_end);
200
201 // Test from end of year
202 let end_of_year = res!(CalendarDate::from_ymd(2024, MonthOfYear::December, 31, zone.clone()));
203 let next_year_from_end = res!(Parser::parse_relative_date_from("next year", &end_of_year, zone.clone()));
204 println!(" From Dec 31: 'next year' → {}", next_year_from_end);
205
206 // Test leap year handling
207 let leap_year_date = res!(CalendarDate::from_ymd(2024, MonthOfYear::February, 28, zone.clone()));
208 let tomorrow_from_feb28 = res!(Parser::parse_relative_date_from("in 1 day", &leap_year_date, zone.clone()));
209 println!(" From Feb 28, 2024 (leap year): 'in 1 day' → {}", tomorrow_from_feb28);
210 assert_eq!(tomorrow_from_feb28.day(), 29, "Should handle leap year correctly");
211
212 println!("\n✅ Relative Date Parsing Demo completed successfully!");
213 println!("🎯 Key features demonstrated:");
214 println!(" ✓ Day-of-week relative dates (next Tuesday, last Friday)");
215 println!(" ✓ Quantified relative dates (in 2 weeks, 3 days ago)");
216 println!(" ✓ Month and year calculations");
217 println!(" ✓ Period boundaries (end of month, beginning of year)");
218 println!(" ✓ Integration with main parser functions");
219 println!(" ✓ Edge case handling and error recovery");
220 println!(" ✓ Cross-month and cross-year boundary calculations");
221 println!(" ✓ Leap year awareness");
222
223 Ok(())
224}
225
226#[test]
227fn test_relative_date_parser_vocabulary() -> Outcome<()> {
228 println!("=== Relative Date Parser Vocabulary Test ===");
229
230 let zone = CalClockZone::utc();
231 let base_date = res!(CalendarDate::from_ymd(2024, MonthOfYear::June, 12, zone.clone())); // Wednesday
232
233 // Test all supported day names
234 let day_names = [
235 ("Monday", DayOfWeek::Monday),
236 ("Tuesday", DayOfWeek::Tuesday),
237 ("Wednesday", DayOfWeek::Wednesday),
238 ("Thursday", DayOfWeek::Thursday),
239 ("Friday", DayOfWeek::Friday),
240 ("Saturday", DayOfWeek::Saturday),
241 ("Sunday", DayOfWeek::Sunday),
242 ("Mon", DayOfWeek::Monday),
243 ("Tue", DayOfWeek::Tuesday),
244 ("Wed", DayOfWeek::Wednesday),
245 ("Thu", DayOfWeek::Thursday),
246 ("Fri", DayOfWeek::Friday),
247 ("Sat", DayOfWeek::Saturday),
248 ("Sun", DayOfWeek::Sunday),
249 ];
250
251 println!("\n📝 Testing day name vocabulary:");
252 for (day_name, expected_day) in &day_names {
253 let input = format!("next {}", day_name);
254 let result = res!(Parser::parse_relative_date_from(&input, &base_date, zone.clone()));
255 assert_eq!(result.day_of_week(), *expected_day, "Day name '{}' not recognized correctly", day_name);
256 println!(" '{}' → {} ✓", input, result.day_of_week());
257 }
258
259 // Test reference words
260 let reference_words = [
261 ("next", "Tuesday"),
262 ("last", "Tuesday"),
263 ("this", "Tuesday"),
264 ("upcoming", "Tuesday"),
265 ("previous", "Tuesday"),
266 ("coming", "Tuesday"),
267 ];
268
269 println!("\n🔗 Testing reference word vocabulary:");
270 for (reference, day) in &reference_words {
271 let input = format!("{} {}", reference, day);
272 if let Ok(result) = Parser::parse_relative_date_from(&input, &base_date, zone.clone()) {
273 println!(" '{}' → {} ✓", input, result);
274 } else {
275 println!(" '{}' → Failed", input);
276 }
277 }
278
279 // Test unit words
280 let unit_words = [
281 ("1 day", 1),
282 ("2 days", 2),
283 ("1 week", 7),
284 ("3 weeks", 21),
285 ("1 month", 0), // Month calculations are complex
286 ("2 months", 0),
287 ("1 year", 0), // Year calculations are complex
288 ];
289
290 println!("\n📊 Testing unit word vocabulary:");
291 for (input_pattern, expected_day_offset) in &unit_words {
292 let forward_input = format!("in {}", input_pattern);
293 let backward_input = format!("{} ago", input_pattern);
294
295 if let Ok(forward_result) = Parser::parse_relative_date_from(&forward_input, &base_date, zone.clone()) {
296 println!(" '{}' → {}", forward_input, forward_result);
297 if *expected_day_offset > 0 {
298 // Calculate the expected date by adding days to the base date
299 let expected_forward = res!(base_date.add_days(*expected_day_offset));
300 assert_eq!(forward_result, expected_forward,
301 "Forward calculation incorrect for '{}'", forward_input);
302 }
303 }
304
305 if let Ok(backward_result) = Parser::parse_relative_date_from(&backward_input, &base_date, zone.clone()) {
306 println!(" '{}' → {}", backward_input, backward_result);
307 if *expected_day_offset > 0 {
308 // Calculate the expected date by subtracting days from the base date
309 let expected_backward = res!(base_date.add_days(-*expected_day_offset));
310 assert_eq!(backward_result, expected_backward,
311 "Backward calculation incorrect for '{}'", backward_input);
312 }
313 }
314 }
315
316 println!("\n✅ Vocabulary test completed successfully!");
317
318 Ok(())
319}
320
321#[test]
322fn test_relative_date_business_scenarios() -> Outcome<()> {
323 println!("=== Business Scenario Relative Date Tests ===");
324
325 let zone = CalClockZone::utc();
326
327 // Scenario 1: Meeting scheduling
328 println!("\n🤝 Scenario 1: Meeting Scheduling");
329 let today = res!(CalendarDate::from_ymd(2024, MonthOfYear::June, 12, zone.clone())); // Wednesday
330
331 let meeting_dates = [
332 "next Monday", // Team meeting
333 "next Friday", // Weekly review
334 "in 2 weeks", // Project deadline
335 "end of this month", // Monthly report due
336 ];
337
338 for date_expr in &meeting_dates {
339 let meeting_date = res!(Parser::parse_relative_date_from(date_expr, &today, zone.clone()));
340 println!(" Meeting '{}': {}", date_expr, meeting_date);
341 }
342
343 // Scenario 2: Project deadlines
344 println!("\n📋 Scenario 2: Project Deadlines");
345 let project_start = res!(CalendarDate::from_ymd(2024, MonthOfYear::June, 1, zone.clone()));
346
347 let deadlines = [
348 ("Sprint review", "in 2 weeks"),
349 ("Beta release", "in 6 weeks"),
350 ("Final release", "in 3 months"),
351 ("Post-mortem", "end of next month"),
352 ];
353
354 for (milestone, date_expr) in &deadlines {
355 let deadline = res!(Parser::parse_relative_date_from(date_expr, &project_start, zone.clone()));
356 println!(" {}: '{}' → {}", milestone, date_expr, deadline);
357 }
358
359 // Scenario 3: Financial reporting
360 println!("\n💰 Scenario 3: Financial Reporting");
361 let fiscal_start = res!(CalendarDate::from_ymd(2024, MonthOfYear::January, 1, zone.clone()));
362
363 let financial_dates = [
364 ("Q1 close", "end of this quarter"),
365 ("Mid-year review", "in 6 months"),
366 ("Year-end close", "end of this year"),
367 ];
368
369 for (event, date_expr) in &financial_dates {
370 if let Ok(event_date) = Parser::parse_relative_date_from(date_expr, &fiscal_start, zone.clone()) {
371 println!(" {}: '{}' → {}", event, date_expr, event_date);
372 } else {
373 println!(" {}: '{}' → [Not yet supported]", event, date_expr);
374 }
375 }
376
377 // Scenario 4: Personal scheduling
378 println!("\n🏠 Scenario 4: Personal Scheduling");
379 let weekend = res!(CalendarDate::from_ymd(2024, MonthOfYear::June, 15, zone.clone())); // Saturday
380
381 let personal_events = [
382 ("Doctor appointment", "next Tuesday"),
383 ("Vacation start", "in 3 weeks"),
384 ("Birthday party", "next Saturday"),
385 ("Tax deadline", "end of this month"),
386 ];
387
388 for (event, date_expr) in &personal_events {
389 let event_date = res!(Parser::parse_relative_date_from(date_expr, &weekend, zone.clone()));
390 println!(" {}: '{}' → {} ({})", event, date_expr, event_date, event_date.day_of_week());
391 }
392
393 println!("\n✅ Business scenario tests completed successfully!");
394 println!("🎯 Demonstrated real-world applications:");
395 println!(" ✓ Meeting and event scheduling");
396 println!(" ✓ Project milestone tracking");
397 println!(" ✓ Financial reporting deadlines");
398 println!(" ✓ Personal calendar management");
399
400 Ok(())
401}