BoxFitterTest: put existing tests inside a nest

src/test/java/net/kemitix/text/fit/BoxFitterTest.java

@@ -2,6 +2,7 @@ package net.kemitix.text.fit;
 
 import org.assertj.core.api.WithAssertions;
 import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 
 import java.awt.*;
@@ -22,82 +23,88 @@ public class BoxFitterTest
         implements WithAssertions {
 
     private final BoxFitter boxFitter = TextFit.fitter();
-    private final int imageSize = 300;
-    private final int fontSize = 20;
-    private final Graphics2D graphics2D = graphics(imageSize, imageSize);
     private final Font font;
     private Function<Integer, Font> fontFactory;
-    private Rectangle2D box = new Rectangle(imageSize, imageSize);
 
     public BoxFitterTest() throws URISyntaxException, IOException, FontFormatException {
         URL resource = this.getClass().getResource("alice/Alice-Regular.ttf");
+        int initialFontSize = 20;
         font = Font.createFont(Font.TRUETYPE_FONT, new File(resource.toURI()))
-                .deriveFont(Font.PLAIN, fontSize);
+                .deriveFont(Font.PLAIN, initialFontSize);
         fontFactory = size -> font.deriveFont(Font.PLAIN, size);
     }
 
-    @Test
+    @Nested
-    @DisplayName("Fit single words")
+    @DisplayName("Single Box")
-    public void fitSingleWord() {
+    public class SingleBox {
-        Map<String, Integer> wordMap = Map.of(
-                ".", 263,
-                "a", 263,
-                "Word", 121,
-                "longer", 104,
-                "extralongword", 44
-        );
-        wordMap.forEach((word, expectedSize) ->
-                assertThat(invoke(word))
-                        .as(word)
-                        .isEqualTo(expectedSize));
-    }
 
-    @Test
+        private final int imageSize = 300;
-    @DisplayName("Fit various lengths")
+        private final Graphics2D graphics2D = graphics(imageSize, imageSize);
-    public void fitVariousLengths() {
+        private Rectangle2D box = new Rectangle(imageSize, imageSize);
-        Map<String, Integer> wordMap = Map.of(
-                ". .", 263,
-                "a a", 208,
-                "Another Word", 81,
-                longStringGenerator(1), 100,
-                longStringGenerator(2), 36,
-                longStringGenerator(3), 27,
-                longStringGenerator(4), 22,
-                longStringGenerator(5), 20,
-                longStringGenerator(100), 4,
-                longStringGenerator(196), 3
-        );
-        wordMap.forEach((word, expectedSize) ->
-                assertThat(invoke(word))
-                        .as(word)
-                        .isEqualTo(expectedSize));
-    }
 
-    @Test
+        @Test
-    @DisplayName("Text too long to fit throws and exception")
+        @DisplayName("Fit single words")
-    // too long to fit means it would need to be rendered at a font size of <2
+        public void fitSingleWord() {
-    public void tooLongThrows() {
+            Map<String, Integer> wordMap = Map.of(
-        String longText = longStringGenerator(197);
+                    ".", 263,
-        assertThatExceptionOfType(IllegalArgumentException.class)
+                    "a", 263,
-                .isThrownBy(() -> invoke(longText));
+                    "Word", 121,
-    }
+                    "longer", 104,
+                    "extralongword", 44
+            );
+            wordMap.forEach((word, expectedSize) ->
+                    assertThat(invoke(word))
+                            .as(word)
+                            .isEqualTo(expectedSize));
+        }
 
-    @Test
+        @Test
-    @DisplayName("Long text can be fitted down to a font size of 3")
+        @DisplayName("Fit various lengths")
-    public void veryLongFits() {
+        public void fitVariousLengths() {
-        String longText = longStringGenerator(196);
+            Map<String, Integer> wordMap = Map.of(
-        assertThatCode(() -> invoke(longText))
+                    ". .", 263,
-                .doesNotThrowAnyException();
+                    "a a", 208,
-    }
+                    "Another Word", 81,
+                    longStringGenerator(1), 100,
+                    longStringGenerator(2), 36,
+                    longStringGenerator(3), 27,
+                    longStringGenerator(4), 22,
+                    longStringGenerator(5), 20,
+                    longStringGenerator(100), 4,
+                    longStringGenerator(196), 3
+            );
+            wordMap.forEach((word, expectedSize) ->
+                    assertThat(invoke(word))
+                            .as(word)
+                            .isEqualTo(expectedSize));
+        }
 
-    private int invoke(String longText) {
+        @Test
-        return boxFitter.fit(longText, fontFactory, graphics2D, box);
+        @DisplayName("Text too long to fit throws and exception")
+        // too long to fit means it would need to be rendered at a font size of <2
+        public void tooLongThrows() {
+            String longText = longStringGenerator(197);
+            assertThatExceptionOfType(IllegalArgumentException.class)
+                    .isThrownBy(() -> invoke(longText));
+        }
+
+        @Test
+        @DisplayName("Long text can be fitted down to a font size of 3")
+        public void veryLongFits() {
+            String longText = longStringGenerator(196);
+            assertThatCode(() -> invoke(longText))
+                    .doesNotThrowAnyException();
+        }
+
+        private int invoke(String longText) {
+            return boxFitter.fit(longText, fontFactory, graphics2D, box);
+        }
     }
 
     private String longStringGenerator(int cycles) {
         String text = "This is a long piece of text that should result in an " +
                 "attempt to render it at a font size on less than 2.";
-        return "cycles: " + cycles +  IntStream.range(0, cycles)
+        return "cycles: " + cycles + IntStream.range(0, cycles)
                 .mapToObj(x -> "\n").collect(Collectors.joining(text));
     }