Function TestSpec_ScheduleDetection_IsCronExpression

pkg/parser/spec_test.go:203–238

TestSpec_ScheduleDetection_IsCronExpression validates the documented behavior of IsCronExpression as described in the package README.md. Specification: Detects whether a string is already a cron expression.

(t *testing.T)

//
// Specification: Detects whether a string is already a cron expression.
func TestSpec_ScheduleDetection_IsCronExpression(t *testing.T) {
	tests := []struct {
		name     string
		input    string
		expected bool
	}{
		{
			name:     "standard 5-field cron returns true",
			input:    "0 9 * * *",
			expected: true,
		},
		{
			name:     "every-5-minutes cron returns true",
			input:    "*/5 * * * *",
			expected: true,
		},
		{
			name:     "natural language schedule returns false",
			input:    "every day at 9am",
			expected: false,
		},
		{
			name:     "empty string returns false",
			input:    "",
			expected: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			result := IsCronExpression(tt.input)
			assert.Equal(t, tt.expected, result,
				"IsCronExpression(%q) should detect cron format correctly", tt.input)
		})
	}
}

// TestSpec_ScheduleDetection_IsDailyCron validates the documented behavior of
// IsDailyCron as described in the package README.md.