1 files changed, 118 insertions, 0 deletions
diff --git a/gerrit-acceptance-framework/src/test/java/com/google/gerrit/acceptance/MergeableFileBasedConfigTest.java b/gerrit-acceptance-framework/src/test/java/com/google/gerrit/acceptance/MergeableFileBasedConfigTest.java
new file mode 100644
index 0000000000..49c23e3652
--- /dev/null
+++ b/gerrit-acceptance-framework/src/test/java/com/google/gerrit/acceptance/MergeableFileBasedConfigTest.java
@@ -0,0 +1,118 @@
+// Copyright (C) 2017 The Android Open Source Project
+//
+// 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.gerrit.acceptance;
+
+import static com.google.common.truth.Truth.assertThat;
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+import com.google.common.collect.ImmutableList;
+import java.io.File;
+import java.nio.file.Files;
+import org.eclipse.jgit.lib.Config;
+import org.eclipse.jgit.util.FS;
+import org.junit.Test;
+
+public class MergeableFileBasedConfigTest {
+  @Test
+  public void mergeNull() throws Exception {
+    MergeableFileBasedConfig cfg = newConfig();
+    cfg.setString("foo", null, "bar", "value");
+    String expected = "[foo]\n\tbar = value\n";
+    assertConfig(cfg, expected);
+    cfg.merge(null);
+    assertConfig(cfg, expected);
+  }
+
+  @Test
+  public void mergeFlatConfig() throws Exception {
+    MergeableFileBasedConfig cfg = newConfig();
+    cfg.setString("foo", null, "bar1", "value1");
+    cfg.setString("foo", null, "bar2", "value2");
+    cfg.setString("foo", "sub", "bar1", "value1");
+    cfg.setString("foo", "sub", "bar2", "value2");
+
+    assertConfig(
+        cfg,
+        "[foo]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = value2\n"
+            + "[foo \"sub\"]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = value2\n");
+
+    Config toMerge = new Config();
+    toMerge.setStringList("foo", null, "bar2", ImmutableList.of("merge1", "merge2"));
+    toMerge.setStringList("foo", "sub", "bar2", ImmutableList.of("merge1", "merge2"));
+    cfg.merge(toMerge);
+
+    assertConfig(
+        cfg,
+        "[foo]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = merge1\n"
+            + "\tbar2 = merge2\n"
+            + "[foo \"sub\"]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = merge1\n"
+            + "\tbar2 = merge2\n");
+  }
+
+  @Test
+  public void mergeStackedConfig() throws Exception {
+    MergeableFileBasedConfig cfg = newConfig();
+    cfg.setString("foo", null, "bar1", "value1");
+    cfg.setString("foo", null, "bar2", "value2");
+    cfg.setString("foo", "sub", "bar1", "value1");
+    cfg.setString("foo", "sub", "bar2", "value2");
+
+    assertConfig(
+        cfg,
+        "[foo]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = value2\n"
+            + "[foo \"sub\"]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = value2\n");
+
+    Config base = new Config();
+    Config toMerge = new Config(base);
+    base.setStringList("foo", null, "bar2", ImmutableList.of("merge1", "merge2"));
+    base.setStringList("foo", "sub", "bar2", ImmutableList.of("merge1", "merge2"));
+    cfg.merge(toMerge);
+
+    assertConfig(
+        cfg,
+        "[foo]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = merge1\n"
+            + "\tbar2 = merge2\n"
+            + "[foo \"sub\"]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = merge1\n"
+            + "\tbar2 = merge2\n");
+  }
+
+  private MergeableFileBasedConfig newConfig() throws Exception {
+    File f = File.createTempFile(getClass().getSimpleName(), ".config");
+    f.deleteOnExit();
+    return new MergeableFileBasedConfig(f, FS.detect());
+  }
+
+  private void assertConfig(MergeableFileBasedConfig cfg, String expected) throws Exception {
+    assertThat(cfg.toText()).isEqualTo(expected);
+    cfg.save();
+    assertThat(new String(Files.readAllBytes(cfg.getFile().toPath()), UTF_8)).isEqualTo(expected);
+  }
+}