Overdue unit tests for some QR code classes

[zxing.git] / core / test / src / com / google / zxing / qrcode / decoder / VersionTestCase.java

diff --git a/core/test/src/com/google/zxing/qrcode/decoder/VersionTestCase.java b/core/test/src/com/google/zxing/qrcode/decoder/VersionTestCase.java
new file mode 100644 (file)
index 0000000..75ed3dd
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+++ b/core/test/src/com/google/zxing/qrcode/decoder/VersionTestCase.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2008 Google Inc.
+ *
+ * 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.qrcode.decoder;
+
+import com.google.zxing.ReaderException;
+import junit.framework.TestCase;
+
+/**
+ * @author srowen@google.com (Sean Owen)
+ */
+public final class VersionTestCase extends TestCase {
+
+  public void testVersionForNumber() throws ReaderException {
+    try {
+      Version.getVersionForNumber(0);
+      fail("Should have thrown an exception");
+    } catch (ReaderException re) {
+      // good
+    }
+    for (int i = 1; i <= 40; i++) {
+      checkVersion(Version.getVersionForNumber(i), i, 4*i + 17);
+    }
+  }
+
+  private static void checkVersion(Version version, int number, int dimension) {
+    assertNotNull(version);
+    assertEquals(number, version.getVersionNumber());
+    assertNotNull(version.getAlignmentPatternCenters());
+    if (number > 1) {
+      assertTrue(version.getAlignmentPatternCenters().length > 0);
+    }
+    assertEquals(dimension, version.getDimensionForVersion());
+    assertNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.H));
+    assertNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.L));
+    assertNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.M));
+    assertNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.Q));
+    assertNotNull(version.buildFunctionPattern());
+  }
+
+  public void testGetProvisionalVersionForDimension() throws ReaderException {
+    for (int i = 1; i <= 40; i++) {
+      assertEquals(i, Version.getProvisionalVersionForDimension(4*i + 17).getVersionNumber());
+    }
+  }
+
+  public void testDecodeVersionInformation() throws ReaderException {
+    // Spot check
+    assertEquals(7, Version.decodeVersionInformation(0x07C94).getVersionNumber());
+    assertEquals(12, Version.decodeVersionInformation(0x0C762).getVersionNumber());
+    assertEquals(17, Version.decodeVersionInformation(0x1145D).getVersionNumber());
+    assertEquals(22, Version.decodeVersionInformation(0x168C9).getVersionNumber());
+    assertEquals(27, Version.decodeVersionInformation(0x1B08E).getVersionNumber());
+    assertEquals(32, Version.decodeVersionInformation(0x209D5).getVersionNumber());    
+  }
+
+}
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