SONAR-16097 Add plugin cache to the Sensor API

1 files changed, 85 insertions, 0 deletions

diff --git a/sonar-scanner-engine/src/test/java/org/sonar/scanner/cache/WriteCacheImplTest.java b/sonar-scanner-engine/src/test/java/org/sonar/scanner/cache/WriteCacheImplTest.java
new file mode 100644
index 00000000000..653ded84d72
--- /dev/null
+++ b/sonar-scanner-engine/src/test/java/org/sonar/scanner/cache/WriteCacheImplTest.java
@@ -0,0 +1,85 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2022 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonar.scanner.cache;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.assertj.core.data.MapEntry.entry;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class WriteCacheImplTest {
+  private final ReadCacheImpl readCache = mock(ReadCacheImpl.class);
+  private final WriteCacheImpl writeCache = new WriteCacheImpl(readCache);
+
+  @Test
+  public void write_bytes_adds_entries() {
+    byte[] b1 = new byte[] {1, 2, 3};
+    byte[] b2 = new byte[] {3, 4};
+    writeCache.write("key", b1);
+    writeCache.write("key2", b2);
+
+    assertThat(writeCache.getCache()).containsOnly(entry("key", b1), entry("key2", b2));
+  }
+
+  @Test
+  public void write_inputStream_adds_entries() {
+    byte[] b1 = new byte[] {1, 2, 3};
+    byte[] b2 = new byte[] {3, 4};
+    writeCache.write("key", new ByteArrayInputStream(b1));
+    writeCache.write("key2", new ByteArrayInputStream(b2));
+
+    assertThat(writeCache.getCache()).containsOnly(entry("key", b1), entry("key2", b2));
+  }
+
+  @Test
+  public void write_throws_IAE_if_writing_same_key_twice() {
+    byte[] b1 = new byte[] {1};
+    byte[] b2 = new byte[] {2};
+
+
+    writeCache.write("key", b1);
+    assertThatThrownBy(() -> writeCache.write("key", b2))
+      .isInstanceOf(IllegalArgumentException.class)
+      .hasMessage("Cache already contains key 'key'");
+  }
+
+  @Test
+  public void copyFromPrevious_throws_IAE_if_read_cache_doesnt_contain_key() {
+    assertThatThrownBy(() ->    writeCache.copyFromPrevious("key"))
+      .isInstanceOf(IllegalArgumentException.class)
+      .hasMessage("Previous cache doesn't contain key 'key'");
+  }
+
+  @Test
+  public void copyFromPrevious_reads_from_readCache() {
+    byte[] b = new byte[] {1};
+    InputStream value = new ByteArrayInputStream(b);
+    when(readCache.contains("key")).thenReturn(true);
+    when(readCache.read("key")).thenReturn(value);
+    writeCache.copyFromPrevious("key");
+
+    assertThat(writeCache.getCache()).containsOnly(entry("key", b));
+  }
+}