Adds method for PdfValidationResult to format validation error messages

PdfValiationErrors of type UNSUPPORTED_DIMENSIONS depend on
the parent PdfValidationResult object to determine the
appropriate string formating values. This formating is
already performed in the toString()-metoden, however use
of this method is not advisable in all contexts. The
new implemented method allows for formating the
PdfValidationError using the appropriate bleed
values

README.md

@@ -31,6 +31,13 @@ Krav til PDF dokumenter er tilgjengelig på https://www.digipost.no/plattform/an
 
 Biblioteket er også tilgjengelig på [Maven Central](http://search.maven.org/#search%7Cga%7C1%7Ca%3A%22printability-validator%22).
 
+Feil ved validering av dimensjoner medfører `PdfValidationError` av typen `UNSUPPORTED_DIMENSIONS`.
+Den tilhørende meldingen inneholder variable parametre for margin og bleed. Fra og med versjon 3.3
+tilbyr `PdfValidationResult` en `formattedValidationErrorMessage`-metode for å kunne formatere denne
+feilmeldingen med riktig verdier. Denne formateringen skjedde tidligere kun i `PdfValidationResult`
+sin `toString`-metode. Den nevnte hjelpemetoden kan benyttes i sammenhenger det er er uønsket å
+benytte `toString`.
+
 ## For avsendere som sender til utskrift via offentlig Sikker Digital Post (SDP) meldingsformidlertjeneste.
 
 I SDP utskriftstjenesten er det satt opp en felles valideringskonfigurasjon. Den er som følger:

pom.xml

@@ -53,6 +53,12 @@
             <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-core</artifactId>
+            <version>1.3</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>org.hamcrest</groupId>
             <artifactId>hamcrest-library</artifactId>

src/main/java/no/digipost/print/validate/PdfValidationResult.java

@@ -45,7 +45,19 @@ public boolean hasErrors() {
         return !errors.isEmpty();
     }
 
-
+    public String formattedValidationErrorMessage(PdfValidationError validationError) {
+        if (validationError == PdfValidationError.UNSUPPORTED_DIMENSIONS) {
+            return String.format(
+                    PdfValidationError.UNSUPPORTED_DIMENSIONS.toString(),
+                    PdfValidator.A4_WIDTH_MM - bleed.negativeBleedInMM,
+                    PdfValidator.A4_WIDTH_MM + bleed.positiveBleedInMM,
+                    PdfValidator.A4_HEIGHT_MM - bleed.negativeBleedInMM,
+                    PdfValidator.A4_HEIGHT_MM + bleed.positiveBleedInMM
+            );
+        } else {
+            return validationError.toString();
+        }
+    }
 
     private String toStringValue;
 
@@ -55,14 +67,7 @@ public String toString() {
             StringBuilder sb = new StringBuilder("[");
             sb.append(getClass().getSimpleName());
             for (PdfValidationError printPdfValideringsFeil : errors) {
-                final String err;
-                if(printPdfValideringsFeil == PdfValidationError.UNSUPPORTED_DIMENSIONS) {
-                    err = String.format(PdfValidationError.UNSUPPORTED_DIMENSIONS.toString(), PdfValidator.A4_WIDTH_MM - bleed.negativeBleedInMM,
-                            PdfValidator.A4_WIDTH_MM + bleed.positiveBleedInMM, PdfValidator.A4_HEIGHT_MM - bleed.negativeBleedInMM, PdfValidator.A4_HEIGHT_MM + bleed.positiveBleedInMM);
-                } else {
-                    err = printPdfValideringsFeil.toString();
-                }
-
+                final String err = formattedValidationErrorMessage(printPdfValideringsFeil);
                 sb.append(" ");
                 sb.append(err);
             }

src/test/java/no/digipost/print/validate/PrintPdfValidatorTest.java

@@ -33,12 +33,13 @@
 import static no.digipost.print.validate.PdfValidationError.TOO_MANY_PAGES_FOR_AUTOMATED_PRINT;
 import static no.digipost.print.validate.PdfValidationError.UNSUPPORTED_DIMENSIONS;
 import static no.digipost.print.validate.PdfValidationSettings.CHECK_ALL;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.contains;
 import static org.hamcrest.Matchers.containsInAnyOrder;
+import static org.hamcrest.Matchers.containsString;
 import static org.hamcrest.Matchers.empty;
 import static org.hamcrest.Matchers.everyItem;
 import static org.hamcrest.Matchers.is;
-import static org.junit.Assert.assertThat;
 
 public class PrintPdfValidatorTest {
 
@@ -89,6 +90,20 @@ public void failedPdfWithInsufficientMarginForPrintGivesPersonalizedBleedParamet
                 PdfValidator.A4_WIDTH_MM - bleed.negativeBleedInMM, PdfValidator.A4_WIDTH_MM + bleed.positiveBleedInMM, PdfValidator.A4_HEIGHT_MM - bleed.negativeBleedInMM, PdfValidator.A4_HEIGHT_MM + bleed.positiveBleedInMM) + "]"));
     }
 
+    @Test
+    public void errorMessageMethodReturnsPersonalizedBleedParameters() {
+        Bleed bleed = new Bleed(2, 3);
+        PdfValidationResult pdfValidationResult = new PdfValidationResult(validationErrors("/pdf/far-from-a4-free-barcode-area.pdf", new PdfValidationSettings(false, false, false, false, bleed.positiveBleedInMM, bleed.negativeBleedInMM)), 1, bleed);
+
+        PdfValidationError error = pdfValidationResult.errors.stream()
+                .filter(UNSUPPORTED_DIMENSIONS::equals)
+                .findAny().orElseThrow(() -> new RuntimeException("Expected unsupported dimensions validation error"));
+
+        String errorMessage = pdfValidationResult.formattedValidationErrorMessage(error);
+        assertThat(errorMessage, containsString(String.format("%d—%d", PdfValidator.A4_WIDTH_MM - bleed.negativeBleedInMM, PdfValidator.A4_WIDTH_MM + bleed.positiveBleedInMM)));
+        assertThat(errorMessage, containsString(String.format("%d—%d", PdfValidator.A4_HEIGHT_MM - bleed.negativeBleedInMM, PdfValidator.A4_HEIGHT_MM + bleed.positiveBleedInMM)));
+    }
+
     @Test
     public void doesNotFailPdfWithInsufficientMarginForPrintIfCheckDisabled() {
         PdfValidationSettings innstillinger = new PdfValidationSettings(false, true, true, true);