Add tests in html2pdf for surrogate pairs. DEVSIX-3301

Author: AlexanderRasolko

src/test/java/com/itextpdf/html2pdf/SurrogatePairsTests.java

@@ -0,0 +1,92 @@
+package com.itextpdf.html2pdf;
+
+import com.itextpdf.io.LogMessageConstant;
+import com.itextpdf.kernel.utils.CompareTool;
+import com.itextpdf.test.ExtendedITextTest;
+import com.itextpdf.test.annotations.LogMessage;
+import com.itextpdf.test.annotations.LogMessages;
+import com.itextpdf.test.annotations.type.IntegrationTest;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+import java.io.File;
+import java.io.IOException;
+
+@Category(IntegrationTest.class)
+public class SurrogatePairsTests extends ExtendedITextTest {
+    public static final String sourceFolder = "./src/test/resources/com/itextpdf/html2pdf/SurrogatePairsTests/";
+    public static final String destinationFolder = "./target/test/com/itextpdf/html2pdf/SurrogatePairsTests/";
+    private static final String TYPOGRAPHY_WARNING = "Cannot find pdfCalligraph module, which was implicitly required by one of the layout properties";
+
+    @BeforeClass
+    public static void beforeClass() {
+        createOrClearDestinationFolder(destinationFolder);
+    }
+
+    @Test
+    @LogMessages(messages = {
+            @LogMessage(messageTemplate = TYPOGRAPHY_WARNING, count = 2)})
+    public void surrogatePairFrom2Chars() throws IOException, InterruptedException {
+        HtmlConverter.convertToPdf(new File(sourceFolder + "surrogatePairFrom2Chars.html"),
+                new File(destinationFolder + "surrogatePairFrom2Chars.pdf"));
+        Assert.assertNull(new CompareTool().compareByContent(destinationFolder + "surrogatePairFrom2Chars.pdf",
+                sourceFolder + "cmp_surrogatePairFrom2Chars.pdf", destinationFolder));
+    }
+
+    @Test
+    @LogMessages(messages = {
+            @LogMessage(messageTemplate = TYPOGRAPHY_WARNING, count = 2)})
+    public void surrogatePair2Pairs() throws IOException, InterruptedException {
+        HtmlConverter.convertToPdf(new File(sourceFolder + "surrogatePair2Pairs.html"),
+                new File(destinationFolder + "surrogatePair2Pairs.pdf"));
+        Assert.assertNull(new CompareTool().compareByContent(destinationFolder + "surrogatePair2Pairs.pdf",
+                sourceFolder + "cmp_surrogatePair2Pairs.pdf", destinationFolder));
+    }
+
+    @Test
+    @LogMessages(messages = {
+            @LogMessage(messageTemplate = TYPOGRAPHY_WARNING, count = 2)})
+    public void surrogatePairFullCharacter() throws IOException, InterruptedException {
+        HtmlConverter.convertToPdf(new File(sourceFolder + "surrogatePairFullCharacter.html"),
+                new File(destinationFolder + "surrogatePairFullCharacter.pdf"));
+        Assert.assertNull(new CompareTool().compareByContent(destinationFolder + "surrogatePairFullCharacter.pdf",
+                sourceFolder + "cmp_surrogatePairFullCharacter.pdf", destinationFolder));
+    }
+
+    @Test
+    //TODO DEVSIX-3307
+    @LogMessages(messages = {
+            @LogMessage(messageTemplate = TYPOGRAPHY_WARNING, count = 2),
+            @LogMessage(messageTemplate = LogMessageConstant.FONT_SUBSET_ISSUE)})
+    public void surrogatePairCombingFullSurrs() throws IOException, InterruptedException {
+        HtmlConverter.convertToPdf(new File(sourceFolder + "surrogatePairCombingFullSurrs.html"),
+                new File(destinationFolder + "surrogatePairCombingFullSurrs.pdf"));
+        Assert.assertNull(new CompareTool().compareByContent(destinationFolder + "surrogatePairCombingFullSurrs.pdf",
+                sourceFolder + "cmp_surrogatePairCombingFullSurrs.pdf", destinationFolder));
+    }
+
+    @Test
+    //TODO DEVSIX-3307
+    @LogMessages(messages = {
+            @LogMessage(messageTemplate = TYPOGRAPHY_WARNING, count = 2),
+            @LogMessage(messageTemplate = LogMessageConstant.FONT_SUBSET_ISSUE)})
+    public void surrogatePairCombingFullSurrsWithNoSurrs() throws IOException, InterruptedException {
+        HtmlConverter.convertToPdf(new File(sourceFolder + "surrogatePairCombingFullSurrsWithNoSurrs.html"),
+                new File(destinationFolder + "surrogatePairCombingFullSurrsWithNoSurrs.pdf"));
+        Assert.assertNull(new CompareTool().compareByContent(destinationFolder + "surrogatePairCombingFullSurrsWithNoSurrs.pdf",
+                sourceFolder + "cmp_surrogatePairCombingFullSurrsWithNoSurrs.pdf", destinationFolder));
+    }
+
+    @Test
+    //TODO DEVSIX-3307
+    @LogMessages(messages = {
+            @LogMessage(messageTemplate = TYPOGRAPHY_WARNING, count = 2)})
+    public void surrogatePairCombinationOf3TypesPairs() throws IOException, InterruptedException {
+        HtmlConverter.convertToPdf(new File(sourceFolder + "surrogatePairCombinationOf3TypesPairs.html"),
+                new File(destinationFolder + "surrogatePairCombinationOf3TypesPairs.pdf"));
+        Assert.assertNull(new CompareTool().compareByContent(destinationFolder + "surrogatePairCombinationOf3TypesPairs.pdf",
+                sourceFolder + "cmp_surrogatePairCombinationOf3TypesPairs.pdf", destinationFolder));
+    }
+}

src/test/resources/com/itextpdf/html2pdf/LICENSE_OFL.txt

@@ -0,0 +1,92 @@
+This Font Software is licensed under the SIL Open Font License,
+Version 1.1.
+
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font
+creation efforts of academic and linguistic communities, and to
+provide a free and open framework in which fonts may be shared and
+improved in partnership with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
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