/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.

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 org.tensorflow.lite;

import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.fail;

import java.io.File;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Tests for {@link org.tensorflow.lite.TensorFlowLite} when no native lib is available. */
@RunWith(JUnit4.class)
public final class TensorFlowLiteNoNativeLibTest {
  @Test
  public void testCheckInit() {
    try {
      TensorFlowLite.init();
      fail();
    } catch (UnsatisfiedLinkError e) {
      assertThat(e).hasMessageThat().contains("Failed to load native TensorFlow Lite methods");
      assertThat(e).hasMessageThat().contains("no tensorflowlite_jni");
      assertThat(e).hasMessageThat().contains("in java.library.path");
    }
  }

  @Test
  public void testInterpreter() {
    try {
      new Interpreter(new File("path/does/not/matter.tflite"));
      fail();
    } catch (UnsatisfiedLinkError e) {
      assertThat(e).hasMessageThat().contains("Failed to load native TensorFlow Lite methods");
      assertThat(e).hasMessageThat().contains("no tensorflowlite_jni");
      assertThat(e).hasMessageThat().contains("in java.library.path");
    }
  }

  @Test
  public void testInterpreterApi() {
    try {
      InterpreterApi.create(new File("path/does/not/matter.tflite"), null);
      fail();
    } catch (UnsatisfiedLinkError e) {
      assertThat(e).hasMessageThat().contains("Failed to load native TensorFlow Lite methods");
      assertThat(e).hasMessageThat().contains("no tensorflowlite_jni");
      assertThat(e).hasMessageThat().contains("in java.library.path");
    }
  }

  @Test
  @SuppressWarnings("deprecation") // This is a test of the deprecated InterpreterFactory class.
  public void testInterpreterFactory() {
    try {
      new InterpreterFactory().create(new File("path/does/not/matter.tflite"), null);
      fail();
    } catch (UnsatisfiedLinkError e) {
      assertThat(e).hasMessageThat().contains("Failed to load native TensorFlow Lite methods");
      assertThat(e).hasMessageThat().contains("no tensorflowlite_jni");
      assertThat(e).hasMessageThat().contains("in java.library.path");
    }
  }
}
