universe@20: package de.uapcore.sudoku;
universe@20: 
universe@20: import org.junit.jupiter.api.Test;
universe@20: 
universe@20: import java.io.File;
universe@20: import java.io.FileOutputStream;
universe@20: import java.io.IOException;
universe@20: import java.nio.file.Files;
universe@20: 
universe@20: import static org.junit.jupiter.api.Assertions.*;
universe@20: 
universe@20: class DocumentHandlerTest {
universe@20: 
universe@20:     @Test
universe@20:     void testFilenameManagement() {
universe@20:         final var dh = new DocumentHandler();
universe@20:         assertFalse(dh.isFilenameSet());
universe@20:         dh.setFilename("foo");
universe@20:         assertTrue(dh.isFilenameSet());
universe@20:         dh.clearFilename();
universe@20:         assertFalse(dh.isFilenameSet());
universe@20:     }
universe@20: 
universe@20:     private File extractFile(String name) throws IOException {
universe@20:         final var f = File.createTempFile("sudoku-test", ".txt");
universe@20:         try (var in = DocumentHandlerTest.class.getClassLoader().getResourceAsStream(name);
universe@20:              var out = new FileOutputStream(f)) {
universe@20:             in.transferTo(out);
universe@20:         }
universe@20:         return f;
universe@20:     }
universe@20: 
universe@20:     private int[] createTestdata() {
universe@20:         return new int[]{0,1,0,9,0,0,8,0,0,
universe@20:                 0,0,0,0,0,8,0,0,4,
universe@20:                 6,0,5,0,0,0,7,0,0,
universe@20:                 0,9,0,0,6,0,0,0,8,
universe@20:                 0,0,0,2,0,7,0,0,0,
universe@20:                 8,0,0,0,3,0,0,6,0,
universe@20:                 0,0,2,0,0,0,5,0,3,
universe@20:                 1,0,0,4,0,0,0,0,0,
universe@20:                 0,0,6,0,0,2,0,1,0};
universe@20:     }
universe@20: 
universe@20:     @Test
universe@20:     void load() throws IOException {
universe@20:         final var f = extractFile("test-sudoku");
universe@20:         final var dh = new DocumentHandler();
universe@20:         final var field = new Field();
universe@20:         dh.setFilename(f.getAbsolutePath());
universe@20:         dh.load(field);
universe@20: 
universe@20:         final var expected = createTestdata();
universe@20:         for (int x = 0 ; x < 9 ; x++) {
universe@20:             for (int y = 0 ; y < 9 ; y++) {
universe@20:                 assertEquals(expected[x+9*y], field.getCellValue(x, y));
universe@20:             }
universe@20:         }
universe@20:     }
universe@20: 
universe@20:     @Test
universe@20:     void save() throws IOException {
universe@20:         final var f = File.createTempFile("sudoku-test", ".txt");
universe@20:         final var dh = new DocumentHandler();
universe@20: 
universe@20:         final var field = new Field();
universe@20:         final var testdata = createTestdata();
universe@20:         for (int x = 0 ; x < 9 ; x++) {
universe@20:             for (int y = 0 ; y < 9 ; y++) {
universe@20:                 field.setCellValue(x, y, testdata[x+9*y]);
universe@20:             }
universe@20:         }
universe@20: 
universe@20:         dh.setFilename(f.getAbsolutePath());
universe@20:         dh.save(field);
universe@20: 
universe@20:         final String[] expected = {
universe@20:                 "_ 1 _ 9 _ _ 8 _ _",
universe@20:                 "_ _ _ _ _ 8 _ _ 4",
universe@20:                 "6 _ 5 _ _ _ 7 _ _",
universe@20:                 "_ 9 _ _ 6 _ _ _ 8",
universe@20:                 "_ _ _ 2 _ 7 _ _ _",
universe@20:                 "8 _ _ _ 3 _ _ 6 _",
universe@20:                 "_ _ 2 _ _ _ 5 _ 3",
universe@20:                 "1 _ _ 4 _ _ _ _ _",
universe@20:                 "_ _ 6 _ _ 2 _ 1 _"
universe@20:         };
universe@20: 
universe@20:         final var actual = Files.readAllLines(f.toPath());
universe@20: 
universe@20:         assertEquals(expected.length, actual.size());
universe@20:         for (int i = 0 ; i < expected.length ; i++) {
universe@20:             assertEquals(expected[i], actual.get(i));
universe@20:         }
universe@20:     }
universe@20: }