step-by-step.md

Day 1: Make your production code easier to understand.

Encapsulate Conditionals

If conditionals are too complex, it might hamper readability.

• Start by simplifying the code

• Then Extract Method for each part of the condition

• Think deeply on the business to find names that represent it

public record Food(LocalDate expirationDate,
                   Boolean approvedForConsumption,
                   UUID inspectorId) {
    public boolean isEdible(Supplier<LocalDate> now) {
        return isFresh(now) &&
                canBeConsumed() &&
                hasBeenInspected();
    }

    private boolean isFresh(Supplier<LocalDate> now) {
        return this.expirationDate.isAfter(now.get());
    }

    private boolean hasBeenInspected() {
        return this.inspectorId != null;
    }

    private Boolean canBeConsumed() {
        return this.approvedForConsumption;
    }
}

• ⚠️ WARNING: Make sure your tests are still passing throughout your refactoring!