1 files changed, 125 insertions, 0 deletions
diff --git a/sonar-scanner-engine/src/test/java/org/sonar/scanner/scm/ScmChangedFilesProviderTest.java b/sonar-scanner-engine/src/test/java/org/sonar/scanner/scm/ScmChangedFilesProviderTest.java
new file mode 100644
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--- /dev/null
+++ b/sonar-scanner-engine/src/test/java/org/sonar/scanner/scm/ScmChangedFilesProviderTest.java
@@ -0,0 +1,125 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2017 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.scm;
+
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Collections;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.sonar.api.batch.fs.internal.DefaultInputModule;
+import org.sonar.api.batch.fs.internal.InputModuleHierarchy;
+import org.sonar.api.batch.scm.ScmBranchProvider;
+import org.sonar.api.batch.scm.ScmProvider;
+import org.sonar.scanner.scan.branch.BranchConfiguration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyZeroInteractions;
+import static org.mockito.Mockito.when;
+
+public class ScmChangedFilesProviderTest {
+  @Mock
+  private ScmConfiguration scmConfiguration;
+  @Mock
+  private BranchConfiguration branchConfiguration;
+  @Mock
+  private InputModuleHierarchy inputModuleHierarchy;
+  @Mock
+  private ScmBranchProvider scmProvider;
+
+  private Path rootBaseDir = Paths.get("root");
+  private ScmChangedFilesProvider provider;
+
+  @Before
+  public void setUp() {
+    MockitoAnnotations.initMocks(this);
+    DefaultInputModule root = mock(DefaultInputModule.class);
+    when(root.getBaseDir()).thenReturn(rootBaseDir);
+    when(inputModuleHierarchy.root()).thenReturn(root);
+    provider = new ScmChangedFilesProvider();
+  }
+
+  @Test
+  public void testNoScmProvider() {
+    when(branchConfiguration.isShortLivingBranch()).thenReturn(true);
+    ScmChangedFiles scmChangedFiles = provider.provide(scmConfiguration, branchConfiguration, inputModuleHierarchy);
+
+    assertThat(scmChangedFiles.get()).isNull();
+    verify(scmConfiguration).provider();
+  }
+
+  @Test
+  public void testProviderDoesntSupport() {
+    when(branchConfiguration.branchTarget()).thenReturn("target");
+    when(branchConfiguration.isShortLivingBranch()).thenReturn(true);
+    when(scmConfiguration.provider()).thenReturn(scmProvider);
+    when(scmProvider.branchChangedFiles("target", rootBaseDir)).thenReturn(null);
+    ScmChangedFiles scmChangedFiles = provider.provide(scmConfiguration, branchConfiguration, inputModuleHierarchy);
+
+    assertThat(scmChangedFiles.get()).isNull();
+    verify(scmProvider).branchChangedFiles("target", rootBaseDir);
+  }
+
+  @Test
+  public void testNoOpInNonShortLivedBranch() {
+    when(branchConfiguration.isShortLivingBranch()).thenReturn(false);
+    ScmChangedFiles scmChangedFiles = provider.provide(scmConfiguration, branchConfiguration, inputModuleHierarchy);
+
+    assertThat(scmChangedFiles.get()).isNull();
+    verifyZeroInteractions(scmConfiguration);
+  }
+
+  @Test
+  public void testLegacyScmProvider() {
+    ScmProvider legacy = mock(ScmProvider.class);
+    when(scmConfiguration.provider()).thenReturn(legacy);
+    when(branchConfiguration.isShortLivingBranch()).thenReturn(true);
+
+    ScmChangedFiles scmChangedFiles = provider.provide(scmConfiguration, branchConfiguration, inputModuleHierarchy);
+
+    assertThat(scmChangedFiles.get()).isNull();
+    verify(scmConfiguration).provider();
+    verifyZeroInteractions(legacy);
+  }
+
+  @Test
+  public void testReturnChangedFiles() {
+    when(branchConfiguration.branchTarget()).thenReturn("target");
+    when(branchConfiguration.isShortLivingBranch()).thenReturn(true);
+    when(scmConfiguration.provider()).thenReturn(scmProvider);
+    when(scmProvider.branchChangedFiles("target", rootBaseDir)).thenReturn(Collections.singletonList(Paths.get("changedFile")));
+    ScmChangedFiles scmChangedFiles = provider.provide(scmConfiguration, branchConfiguration, inputModuleHierarchy);
+
+    assertThat(scmChangedFiles.get()).containsOnly(Paths.get("changedFile"));
+    verify(scmProvider).branchChangedFiles("target", rootBaseDir);
+  }
+
+  @Test
+  public void testCacheObject() {
+    provider.provide(scmConfiguration, branchConfiguration, inputModuleHierarchy);
+    provider.provide(scmConfiguration, branchConfiguration, inputModuleHierarchy);
+    verify(branchConfiguration).isShortLivingBranch();
+  }
+
+}