Enhanced test coverage and updated documentation

This commit includes a new test case to strengthen validation of empty strings in the RegexTest.php. Also, the schema in example_full.yml has been greatly expanded to encompass additional rules and aggregate rules for more comprehensive validation. Apart from that, the README.md content structure has been modified for better clarity and readability.

README.md

@@ -48,12 +48,8 @@ Integrating CSV validation into CI processes promotes higher data integrity, rel
 * [demo.csv](tests/fixtures/demo.csv)
 
 
-## Usage
-
-Also see demo in the [GitHub Actions](https://github.com/JBZoo/Csv-Blueprint/actions/workflows/demo.yml) file.
-
 ### Schema Definition
-Define your CSV validation schema in a YAML file.
+Define your CSV validation schema in a [YAML](schema-examples/full.yml). Other formats are also available: , [JSON](schema-examples/full.json), [PHP](schema-examples/full.php).
 
 This example defines a simple schema for a CSV file with a header row, specifying that the `id` column must not be empty and must contain integer values.
 Also, it checks that the `name` column has a minimum length of 3 characters.
@@ -74,6 +70,9 @@ columns:
 
 ```
 
+
+### Full description of the scheme
+
 In the [example Yml file](schema-examples/full.yml) you can find a detailed description of all features.
 It's also covered by tests, so it's always up-to-date.
 
@@ -85,10 +84,6 @@ It's also covered by tests, so it's always up-to-date.
 * You are always free to add your option anywhere (except the `rules` list) and it will be ignored. I find it convenient for additional integrations and customization.
 
 
-### Schema file examples
-
-Available formats: [YAML](schema-examples/full.yml), [JSON](schema-examples/full.json), [PHP](schema-examples/full.php).
-
 ```yml
 # It's a full example of the CSV schema file in YAML format.
 
@@ -223,6 +218,11 @@ columns:
 ```
 
 
+## Usage
+
+You can find launch examples in the [workflow demo](https://github.com/JBZoo/Csv-Blueprint/actions/workflows/demo.yml).
+
+
 ### As GitHub Action
 
 ```yml
@@ -436,6 +436,8 @@ It's random ideas and plans. No orderings and deadlines. <u>But batch processing
 
 **Validation**
 * More aggregate rules.
+* More cell rules.
+* `required` flag for the column.
 * Custom cell rule as a callback. It's useful when you have a complex rule that can't be described in the schema file.
 * Custom agregate rule as a callback. It's useful when you have a complex rule that can't be described in the schema file.
 * Configurable keyword for null/empty values. By default, it's an empty string. But you will use `null`, `nil`, `none`, `empty`, etc. Overridable on the column level.

tests/Rules/Cell/RegexTest.php

@@ -32,6 +32,7 @@ public function testPositive(): void
         isSame('', $rule->test('abc'));
         isSame('', $rule->test('aaa'));
         isSame('', $rule->test('a'));
+        isSame('', $rule->test(''));
 
         $rule = $this->create('^a');
         isSame('', $rule->test('abc'));

tests/schemas/example_full.yml

@@ -34,7 +34,46 @@ csv: # How to parse file before validation
 columns:
   - name: General available options # Can be optional if csv\header: false. If set, then header must contain this value
     required: true                  # If true, then column must be present in the file
+    rules:
+      is_ip6: true
+      dateperiod_: true
+      dateinterval_: true
+      bic: true
+      iban: true
+      card_number: true
+      country_code: true
+      currency_code: true
+      is_positive: true
+      is_negative: true
+      is_zero: true
+      is_even: true
+      is_odd: true
+      is_prime: true
+      is_time: true
+      is_timezone: true
+      is_timezone_offset: true
     aggregate_rules:
+      sum_: true
+      avg_: true
+      median_: true
+      mode_: true
+      range_: true
+      variance_: true
+      stddev_: true
+      percentile_: true
+      quantile_: true
+      count_: true
+      count_distinct_: true
+      count_empty_: true
+      count_not_empty_: true
+      count_null_: true
+      count_not_null_: true
+      count_zero_: true
+      count_positive_: true
+      count_negative_: true
+      count_even_: true
+      count_odd_: true
+      count_prime_: true
       sorted: asc                   # asc, desc, none
       sorted_flag: SORT_NATURAL     # See sort flags: https://www.php.net/manual/en/function.sort.php
       count_min: 1