TexWriter tests

src/main/java/scot/carricksoftware/grantswriter/writer/TexWriterImpl.java

@@ -21,7 +21,6 @@ public class TexWriterImpl implements TexWriter {
     @Override
     public void write(String filename) throws IOException {
         fileWriter.init(filename);
-        fileWriter.writeLine("Archie");
         fileWriter.close();
     }
 }

src/test/java/scot/carricksoftware/grantswriter/writer/TexWriterTest.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2025.  Andrew Grant Carrick Software. All rights reserved
+ *
+ */
+
+package scot.carricksoftware.grantswriter.writer;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InOrder;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.inOrder;
+import static scot.carricksoftware.grantswriter.GenerateRandomNumberValues.GetRandomString;
+
+@ExtendWith(MockitoExtension.class)
+class TexWriterTest {
+
+    private TexWriter texWriter;
+
+    @Mock
+    private FileWriter fileWriterMock;
+
+    @BeforeEach
+    void setUp() {
+        texWriter = new TexWriterImpl(fileWriterMock);
+    }
+
+    @Test
+    void initAndCloseTest() throws Exception {
+        InOrder inorder = inOrder(fileWriterMock, fileWriterMock);
+        texWriter.write(GetRandomString());
+        inorder.verify(fileWriterMock).init(anyString());
+        inorder.verify(fileWriterMock).close();
+    }
+
+}