death-notifier/src/test/php/IsNotBlankRuleTest.php

<?php

namespace php;


/**
 * Unit tests for `IsNotBlankRule`.
 */
final class IsNotBlankRuleTest extends RuleTest
{
    function get_rule(?string $override = null): Rule
    {
        return new IsNotBlankRule($override);
    }

    function get_valid_input(): ?string
    {
        return "not-blank";
    }

    function get_invalid_input(): ?string
    {
        return "";
    }


    public function test_returns_null_if_string_is_not_blank(): void
    {
        $rule = new IsNotBlankRule();

        $is_valid = $rule->check(["input" => "not-blank"], "input");

        $this->assertNull($is_valid);
    }

    public function test_returns_response_message_if_input_is_the_empty_string(): void
    {
        $rule = new IsNotBlankRule();

        $is_valid = $rule->check(["input" => ""], "input");

        $this->assertNotNull($is_valid);
        $this->assertEquals("Use at least one character.", $is_valid->payload["message"]);
    }

    public function test_returns_response_message_if_input_contains_whitespace_only(): void
    {
        $rule = new IsNotBlankRule();

        $is_valid = $rule->check(["input" => "   "], "input");

        $this->assertNotNull($is_valid);
        $this->assertEquals("Use at least one character.", $is_valid->payload["message"]);
    }
}