Merge remote-tracking branch 'aosp/upstream-master' into merge am: dd3cabeacc

am: 6fbc3cf5a1

Change-Id: I11b0ec1cf561d2a14da78e444b1594f167787fe6

3 files changed, 155 insertions, 0 deletions

diff --git a/impl_core/src/test/java/io/opencensus/implcore/internal/CurrentStateTest.java b/impl_core/src/test/java/io/opencensus/implcore/internal/CurrentStateTest.java
new file mode 100644
index 00000000..b7e6a93a
--- /dev/null
+++ b/impl_core/src/test/java/io/opencensus/implcore/internal/CurrentStateTest.java
@@ -0,0 +1,57 @@
+/*
+ * 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.implcore.internal;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import io.opencensus.implcore.internal.CurrentState.State;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Tests for {@link CurrentState}. */
+@RunWith(JUnit4.class)
+public final class CurrentStateTest {
+
+  @Rule public final ExpectedException thrown = ExpectedException.none();
+
+  @Test
+  public void defaultState() {
+    assertThat(new CurrentState(State.ENABLED).get()).isEqualTo(State.ENABLED);
+  }
+
+  @Test
+  public void setState() {
+    CurrentState currentState = new CurrentState(State.ENABLED);
+    assertThat(currentState.set(State.DISABLED)).isTrue();
+    assertThat(currentState.getInternal()).isEqualTo(State.DISABLED);
+    assertThat(currentState.set(State.ENABLED)).isTrue();
+    assertThat(currentState.getInternal()).isEqualTo(State.ENABLED);
+    assertThat(currentState.set(State.ENABLED)).isFalse();
+  }
+
+  @Test
+  public void preventSettingStateAfterReadingState() {
+    CurrentState currentState = new CurrentState(State.ENABLED);
+    currentState.get();
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("State was already read, cannot set state.");
+    currentState.set(State.DISABLED);
+  }
+}
diff --git a/impl_core/src/test/java/io/opencensus/implcore/internal/TimestampConverterTest.java b/impl_core/src/test/java/io/opencensus/implcore/internal/TimestampConverterTest.java
new file mode 100644
index 00000000..32a3e687
--- /dev/null
+++ b/impl_core/src/test/java/io/opencensus/implcore/internal/TimestampConverterTest.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2017, 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.implcore.internal;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.when;
+
+import io.opencensus.common.Clock;
+import io.opencensus.common.Timestamp;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+/** Unit tests for {@link TimestampConverter}. */
+@RunWith(JUnit4.class)
+public class TimestampConverterTest {
+  private final Timestamp timestamp = Timestamp.create(1234, 5678);
+  @Mock private Clock mockClock;
+
+  @Before
+  public void setUp() {
+    MockitoAnnotations.initMocks(this);
+  }
+
+  @Test
+  public void convertNanoTime() {
+    when(mockClock.now()).thenReturn(timestamp);
+    when(mockClock.nowNanos()).thenReturn(1234L);
+    TimestampConverter timeConverter = TimestampConverter.now(mockClock);
+    assertThat(timeConverter.convertNanoTime(6234)).isEqualTo(Timestamp.create(1234, 10678));
+    assertThat(timeConverter.convertNanoTime(1000)).isEqualTo(Timestamp.create(1234, 5444));
+    assertThat(timeConverter.convertNanoTime(999995556)).isEqualTo(Timestamp.create(1235, 0));
+  }
+}
diff --git a/impl_core/src/test/java/io/opencensus/implcore/internal/UtilsTest.java b/impl_core/src/test/java/io/opencensus/implcore/internal/UtilsTest.java
new file mode 100644
index 00000000..2e0bde21
--- /dev/null
+++ b/impl_core/src/test/java/io/opencensus/implcore/internal/UtilsTest.java
@@ -0,0 +1,47 @@
+/*
+ * 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.implcore.internal;
+
+import java.util.Arrays;
+import java.util.List;
+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 Utils}. */
+@RunWith(JUnit4.class)
+public class UtilsTest {
+  @Rule public ExpectedException thrown = ExpectedException.none();
+
+  @Test
+  public void checkListElementNull() {
+    List<Double> list = Arrays.asList(0.0, 1.0, 2.0, null);
+    thrown.expect(NullPointerException.class);
+    thrown.expectMessage("null");
+    Utils.checkListElementNotNull(list, null);
+  }
+
+  @Test
+  public void checkListElementNull_WithMessage() {
+    List<Double> list = Arrays.asList(0.0, 1.0, 2.0, null);
+    thrown.expect(NullPointerException.class);
+    thrown.expectMessage("list should not be null.");
+    Utils.checkListElementNotNull(list, "list should not be null.");
+  }
+}