Revert "Temporarily move "metrics" package into impl_core/ for release. (#1426)" (#1432)

This reverts commit d3fa0e5c60903f95c184d7c7bafae8fdd12156ad.

1 files changed, 185 insertions, 0 deletions

diff --git a/api/src/test/java/io/opencensus/metrics/MetricRegistryTest.java b/api/src/test/java/io/opencensus/metrics/MetricRegistryTest.java
new file mode 100644
index 00000000..49e8ce02
--- /dev/null
+++ b/api/src/test/java/io/opencensus/metrics/MetricRegistryTest.java
@@ -0,0 +1,185 @@
+/*
+ * Copyright 2018, OpenCensus Authors
+ *
+ * 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 io.opencensus.metrics;
+
+import io.opencensus.common.ToDoubleFunction;
+import io.opencensus.common.ToLongFunction;
+import java.util.LinkedHashMap;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Unit tests for {@link MetricRegistry}. */
+@RunWith(JUnit4.class)
+public class MetricRegistryTest {
+  @Rule public ExpectedException thrown = ExpectedException.none();
+
+  private final MetricRegistry metricRegistry =
+      MetricsComponent.newNoopMetricsComponent().getMetricRegistry();
+
+  @Test
+  public void addDoubleGauge_NullName() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addDoubleGauge(
+        null,
+        "description",
+        "1",
+        new LinkedHashMap<LabelKey, LabelValue>(),
+        null,
+        new ToDoubleFunction<Object>() {
+          @Override
+          public double applyAsDouble(Object value) {
+            return 5.0;
+          }
+        });
+  }
+
+  @Test
+  public void addDoubleGauge_NullDescription() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addDoubleGauge(
+        "name",
+        null,
+        "1",
+        new LinkedHashMap<LabelKey, LabelValue>(),
+        null,
+        new ToDoubleFunction<Object>() {
+          @Override
+          public double applyAsDouble(Object value) {
+            return 5.0;
+          }
+        });
+  }
+
+  @Test
+  public void addDoubleGauge_NullUnit() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addDoubleGauge(
+        "name",
+        "description",
+        null,
+        new LinkedHashMap<LabelKey, LabelValue>(),
+        null,
+        new ToDoubleFunction<Object>() {
+          @Override
+          public double applyAsDouble(Object value) {
+            return 5.0;
+          }
+        });
+  }
+
+  @Test
+  public void addDoubleGauge_NullLabels() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addDoubleGauge(
+        "name",
+        "description",
+        "1",
+        null,
+        null,
+        new ToDoubleFunction<Object>() {
+          @Override
+          public double applyAsDouble(Object value) {
+            return 5.0;
+          }
+        });
+  }
+
+  @Test
+  public void addDoubleGauge_NullFunction() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addDoubleGauge(
+        "name", "description", "1", new LinkedHashMap<LabelKey, LabelValue>(), null, null);
+  }
+
+  @Test
+  public void addLongGauge_NullName() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addLongGauge(
+        null,
+        "description",
+        "1",
+        new LinkedHashMap<LabelKey, LabelValue>(),
+        null,
+        new ToLongFunction<Object>() {
+          @Override
+          public long applyAsLong(Object value) {
+            return 5;
+          }
+        });
+  }
+
+  @Test
+  public void addLongGauge_NullDescription() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addLongGauge(
+        "name",
+        null,
+        "1",
+        new LinkedHashMap<LabelKey, LabelValue>(),
+        null,
+        new ToLongFunction<Object>() {
+          @Override
+          public long applyAsLong(Object value) {
+            return 5;
+          }
+        });
+  }
+
+  @Test
+  public void addLongGauge_NullUnit() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addLongGauge(
+        "name",
+        "description",
+        null,
+        new LinkedHashMap<LabelKey, LabelValue>(),
+        null,
+        new ToLongFunction<Object>() {
+          @Override
+          public long applyAsLong(Object value) {
+            return 5;
+          }
+        });
+  }
+
+  @Test
+  public void addLongGauge_NullLabels() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addLongGauge(
+        "name",
+        "description",
+        "1",
+        null,
+        null,
+        new ToLongFunction<Object>() {
+          @Override
+          public long applyAsLong(Object value) {
+            return 5;
+          }
+        });
+  }
+
+  @Test
+  public void addLongGauge_NullFunction() {
+    thrown.expect(NullPointerException.class);
+    metricRegistry.addLongGauge(
+        "name", "description", "1", new LinkedHashMap<LabelKey, LabelValue>(), null, null);
+  }
+}