#1 Check for empty document before convert

jpnffigueiredo · Feb 6, 2018 · f3f5ae8 · f3f5ae8
1 parent 78bab31
commit f3f5ae8
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Showing 2 changed files with 14 additions and 2 deletions.
diff --git a/src/main/java/com/dcomp/tools/Latex.java b/src/main/java/com/dcomp/tools/Latex.java
@@ -73,7 +73,9 @@ public Input pdf() throws IOException {
         final File dir = Files.createTempDir();
         final File doc = new File(dir, "document.tex");
         try {
-            new LengthOf(new TeeInput(this.source, doc)).intValue();
+            if (new LengthOf(new TeeInput(this.source, doc)).intValue() == 0) {
+                throw new IOException("Found empty document");
+            }
             Latex.compile(dir, doc.getName());
             return new InputOf(
                 java.nio.file.Files.newInputStream(

diff --git a/src/test/java/com/dcomp/tools/LatexTest.java b/src/test/java/com/dcomp/tools/LatexTest.java
@@ -45,7 +45,7 @@ public final class LatexTest {
     /**
      * Latex can render pdf.
      *
-     * @throws IOException If some problem inside
+     * @throws IOException If some problem found
      */
     @Test
     public void renders() throws IOException {
@@ -63,4 +63,14 @@ public void renders() throws IOException {
         );
     }
 
+    /**
+     * Latex can not render empty documents.
+     *
+     * @throws IOException If some problem found
+     */
+    @Test(expected = IOException.class)
+    public void throwsExceptionForEmptyDocument() throws IOException {
+        new Latex("").pdf();
+    }
+
 }