moved java files for pre-convert

java_test/java/com/google/zxing/common/StringUtilsTestCase.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2012 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing.common;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.util.Random;
+
+/**
+ * Tests {@link StringUtils}.
+ */
+public final class StringUtilsTestCase extends Assert {
+
+  @Test
+  public void testRandom() {
+    Random r = new Random(1234L);
+    byte[] bytes = new byte[1000];
+    r.nextBytes(bytes);
+    assertEquals(Charset.defaultCharset(), StringUtils.guessCharset(bytes, null));
+  }
+
+  @Test
+  public void testShortShiftJIS1() {
+    // 金魚
+    doTest(new byte[] { (byte) 0x8b, (byte) 0xe0, (byte) 0x8b, (byte) 0x9b, }, StringUtils.SHIFT_JIS_CHARSET, "SJIS");
+  }
+
+  @Test
+  public void testShortISO885911() {
+    // båd
+    doTest(new byte[] { (byte) 0x62, (byte) 0xe5, (byte) 0x64, }, StandardCharsets.ISO_8859_1, "ISO8859_1");
+  }
+
+  @Test
+  public void testShortUTF81() {
+    // Español
+    doTest(new byte[] { (byte) 0x45, (byte) 0x73, (byte) 0x70, (byte) 0x61, (byte) 0xc3,
+                        (byte) 0xb1, (byte) 0x6f, (byte) 0x6c },
+           StandardCharsets.UTF_8, "UTF8");
+  }
+
+  @Test
+  public void testMixedShiftJIS1() {
+    // Hello 金!
+    doTest(new byte[] { (byte) 0x48, (byte) 0x65, (byte) 0x6c, (byte) 0x6c, (byte) 0x6f,
+                        (byte) 0x20, (byte) 0x8b, (byte) 0xe0, (byte) 0x21, },
+           StringUtils.SHIFT_JIS_CHARSET, "SJIS");
+  }
+
+  @Test
+  public void testUTF16BE() {
+    // 调压柜
+    doTest(new byte[] { (byte) 0xFE, (byte) 0xFF, (byte) 0x8c, (byte) 0x03, (byte) 0x53, (byte) 0x8b,
+                        (byte) 0x67, (byte) 0xdc, },
+           StandardCharsets.UTF_16,
+           StandardCharsets.UTF_16.name());
+  }
+
+  @Test
+  public void testUTF16LE() {
+    // 调压柜
+    doTest(new byte[] { (byte) 0xFF, (byte) 0xFE, (byte) 0x03, (byte) 0x8c, (byte) 0x8b, (byte) 0x53,
+                        (byte) 0xdc, (byte) 0x67, },
+           StandardCharsets.UTF_16,
+           StandardCharsets.UTF_16.name());
+  }
+
+  private static void doTest(byte[] bytes, Charset charset, String encoding) {
+    Charset guessedCharset = StringUtils.guessCharset(bytes, null);
+    String guessedEncoding = StringUtils.guessEncoding(bytes, null);
+    assertEquals(charset, guessedCharset);
+    assertEquals(encoding, guessedEncoding);
+  }
+
+  /**
+   * Utility for printing out a string in given encoding as a Java statement, since it's better
+   * to write that into the Java source file rather than risk character encoding issues in the
+   * source file itself.
+   *
+   * @param args command line arguments
+   */
+  public static void main(String[] args) {
+    String text = args[0];
+    Charset charset = Charset.forName(args[1]);
+    StringBuilder declaration = new StringBuilder();
+    declaration.append("new byte[] { ");
+    for (byte b : text.getBytes(charset)) {
+      declaration.append("(byte) 0x");
+      int value = b & 0xFF;
+      if (value < 0x10) {
+        declaration.append('0');
+      }
+      declaration.append(Integer.toHexString(value));
+      declaration.append(", ");
+    }
+    declaration.append('}');
+    System.out.println(declaration);
+  }
+
+}