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Diffstat (limited to 'src/test/java/com/iciql/test/ConcurrencyTest.java')
| -rw-r--r-- | src/test/java/com/iciql/test/ConcurrencyTest.java | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/test/java/com/iciql/test/ConcurrencyTest.java b/src/test/java/com/iciql/test/ConcurrencyTest.java new file mode 100644 index 0000000..e248265 --- /dev/null +++ b/src/test/java/com/iciql/test/ConcurrencyTest.java @@ -0,0 +1,199 @@ +/* + * Copyright 2011 James Moger. + * + * 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.iciql.test; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertTrue; + +import java.util.List; +import java.util.concurrent.atomic.AtomicInteger; + +import org.junit.Before; +import org.junit.Ignore; +import org.junit.Test; + +import com.iciql.Db; +import com.iciql.IciqlException; +import com.iciql.Query; +import com.iciql.test.models.Product; +import com.iciql.util.Utils; + +/** + * Tests concurrency and alias instance sharing. + */ +public class ConcurrencyTest { + + private int numberOfTests = 800; + + @Before + public void setUp() { + Db db = IciqlSuite.openNewDb(); + db.insertAll(Product.getList()); + } + + @Test + public void testAliasSharing() throws Exception { + Db db = IciqlSuite.openCurrentDb(); + try { + // Single-threaded example of why aliases can NOT be shared. + Product p = new Product(); + Query<Product> query1 = db.from(p); + Query<Product> query2 = db.from(p); + + // if you could share alias instances both counts should be equal + long count1 = 0; + try { + count1 = query1.where(p.category).is("Beverages").selectCount(); + } catch (IciqlException e) { + assertEquals(IciqlException.CODE_UNMAPPED_FIELD, e.getIciqlCode()); + } + long count2 = query2.where(p.category).is("Beverages").selectCount(); + + // but they aren't + assertEquals(0, count1); + assertEquals(2, count2); + assertTrue(count1 != count2); + } finally { + db.close(); + } + } + + @Test + @Ignore + public void testConcurrencyFinal() throws Exception { + // Multi-threaded example of why aliases can NOT be shared. + // + // This test looks like it _could_ work and you may find that it _can_ + // work, but you should also find that it _will_ fail. + + List<Thread> threads = Utils.newArrayList(); + final AtomicInteger failures = new AtomicInteger(0); + final Product p = new Product(); + for (int i = 0; i < numberOfTests; i++) { + final int testNumber = i; + Thread t = new Thread(new Runnable() { + public void run() { + try { + int testCase = testNumber % 10; + test(testCase, p); + } catch (AssertionError e) { + failures.incrementAndGet(); + } catch (IciqlException e) { + failures.incrementAndGet(); + if (e.getIciqlCode() != IciqlException.CODE_UNMAPPED_FIELD) { + System.err.println("UNEXPECTED ERROR in testConcurrencyFinal()"); + e.printStackTrace(); + } + } + } + }, "ICIQL-" + i); + t.start(); + threads.add(t); + } + + // wait till all threads complete + for (Thread t : threads) { + t.join(); + } + + assertTrue("This should fail. Try running a few more times.", failures.get() > 0); + } + + @Test + @Ignore + public void testConcurrencyThreadLocal() throws Exception { + List<Thread> threads = Utils.newArrayList(); + final AtomicInteger failures = new AtomicInteger(0); + final ThreadLocal<Product> tl = Utils.newThreadLocal(Product.class); + for (int i = 0; i < numberOfTests; i++) { + final int testNumber = i; + Thread t = new Thread(new Runnable() { + public void run() { + try { + int testCase = testNumber % 10; + test(testCase, tl.get()); + } catch (AssertionError e) { + failures.incrementAndGet(); + } catch (IciqlException e) { + failures.incrementAndGet(); + if (e.getIciqlCode() != IciqlException.CODE_UNMAPPED_FIELD) { + System.err.println("UNEXPECTED ERROR in testConcurrencyThreadLocal()"); + e.printStackTrace(); + } + } + } + }, "ICIQL-" + i); + t.start(); + threads.add(t); + } + + // wait till all threads complete + for (Thread t : threads) { + t.join(); + } + + assertEquals("ThreadLocal should never fail!", 0, failures.get()); + } + + private void test(int testCase, Product p) throws AssertionError { + Db db = IciqlSuite.openCurrentDb(); + try { + List<Product> list; + switch (testCase) { + case 0: + list = db.from(p).where(p.productName).is("Chai").select(); + assertEquals(1, list.size()); + assertEquals("Chai", list.get(0).productName); + break; + case 1: + list = db.from(p).where(p.category).is("Condiments").select(); + assertEquals(5, list.size()); + break; + case 3: + list = db.from(p).where(p.productName).is("Aniseed Syrup").select(); + assertEquals(1, list.size()); + assertEquals("Aniseed Syrup", list.get(0).productName); + break; + case 4: + list = db.from(p).where(p.productName).like("Chef%").select(); + assertEquals(2, list.size()); + assertTrue(list.get(0).productName.startsWith("Chef")); + assertTrue(list.get(1).productName.startsWith("Chef")); + break; + case 6: + list = db.from(p).where(p.unitsInStock).exceeds(0).select(); + assertEquals(9, list.size()); + break; + case 7: + list = db.from(p).where(p.unitsInStock).is(0).select(); + assertEquals(1, list.size()); + assertEquals("Chef Anton's Gumbo Mix", list.get(0).productName); + break; + case 9: + list = db.from(p).where(p.productId).is(7).select(); + assertEquals(1, list.size()); + assertTrue(7 == list.get(0).productId); + break; + default: + list = db.from(p).select(); + assertEquals(10, list.size()); + } + } finally { + db.close(); + } + } +} |