From 85ec83484696d1745f8103ef13dd644872fd19cd Mon Sep 17 00:00:00 2001
From: Julien Lancelot <julien.lancelot@sonarsource.com>
Date: Tue, 8 Sep 2015 14:49:49 +0200
Subject: [PATCH] SONAR-6827 Check output metrics are not core metrics

---
 .../test/TestMeasureComputerDefinition.java   | 33 +++++++++++++++++++
 .../TestMeasureComputerDefinitionTest.java    | 12 +++++++
 2 files changed, 45 insertions(+)

diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/ce/measure/test/TestMeasureComputerDefinition.java b/sonar-plugin-api/src/main/java/org/sonar/api/ce/measure/test/TestMeasureComputerDefinition.java
index 877a41a736b..050fd33d7d3 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/ce/measure/test/TestMeasureComputerDefinition.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/ce/measure/test/TestMeasureComputerDefinition.java
@@ -20,10 +20,18 @@
 
 package org.sonar.api.ce.measure.test;
 
+import com.google.common.base.Function;
+import com.google.common.base.Predicate;
+import com.google.common.collect.FluentIterable;
 import com.google.common.collect.ImmutableSet;
+import java.util.Arrays;
+import java.util.List;
 import java.util.Set;
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import org.sonar.api.ce.measure.MeasureComputer;
+import org.sonar.api.measures.CoreMetrics;
+import org.sonar.api.measures.Metric;
 
 import static com.google.common.base.Preconditions.checkArgument;
 import static java.util.Objects.requireNonNull;
@@ -81,6 +89,7 @@ public class TestMeasureComputerDefinition implements MeasureComputer.MeasureCom
     private static String[] validateOutputMetricKeys(@Nullable String[] outputMetrics) {
       requireNonNull(outputMetrics, "Output metrics cannot be null");
       checkArgument(outputMetrics.length > 0, "At least one output metric must be defined");
+      FluentIterable.from(CoreMetrics.getMetrics()).transform(MetricToKey.INSTANCE).filter(new MatchMetricKey(outputMetrics)).size();
       checkNotNull(outputMetrics);
       return outputMetrics;
     }
@@ -91,4 +100,28 @@ public class TestMeasureComputerDefinition implements MeasureComputer.MeasureCom
       requireNonNull(metric, "Null metric is not allowed");
     }
   }
+
+  private enum MetricToKey implements Function<Metric, String> {
+    INSTANCE;
+
+    @Override
+    public String apply(@Nonnull Metric input) {
+      return input.getKey();
+    }
+  }
+
+  private static class MatchMetricKey implements Predicate<String> {
+
+    private final List<String> metrics;
+
+    public MatchMetricKey(String[] metrics) {
+      this.metrics = Arrays.asList(metrics);
+    }
+
+    @Override
+    public boolean apply(@Nonnull String metric) {
+      checkArgument(!metrics.contains(metric), "Core metrics are not allowed");
+      return true;
+    }
+  }
 }
diff --git a/sonar-plugin-api/src/test/java/org/sonar/api/ce/measure/test/TestMeasureComputerDefinitionTest.java b/sonar-plugin-api/src/test/java/org/sonar/api/ce/measure/test/TestMeasureComputerDefinitionTest.java
index 6a34b47c6f1..f30843613ec 100644
--- a/sonar-plugin-api/src/test/java/org/sonar/api/ce/measure/test/TestMeasureComputerDefinitionTest.java
+++ b/sonar-plugin-api/src/test/java/org/sonar/api/ce/measure/test/TestMeasureComputerDefinitionTest.java
@@ -25,6 +25,7 @@ import org.junit.Test;
 import org.junit.rules.ExpectedException;
 import org.sonar.api.ce.measure.MeasureComputer.MeasureComputerDefinition;
 import org.sonar.api.ce.measure.test.TestMeasureComputerDefinition.MeasureComputerDefinitionBuilderImpl;
+import org.sonar.api.measures.CoreMetrics;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -118,4 +119,15 @@ public class TestMeasureComputerDefinitionTest {
       .setOutputMetrics()
       .build();
   }
+
+  @Test
+  public void fail_with_IAE_when_building_definition_with_core_metrics_in_output_metrics() throws Exception {
+    thrown.expect(IllegalArgumentException.class);
+    thrown.expectMessage("Core metrics are not allowed");
+
+    new MeasureComputerDefinitionBuilderImpl()
+      .setInputMetrics("INPUT_1", "INPUT_2")
+      .setOutputMetrics(CoreMetrics.NCLOC_KEY)
+      .build();
+  }
 }
-- 
2.39.5