diff --git a/test/any_grpc.js b/test/any_grpc.js
deleted file mode 100644
index d6d008c2..00000000
--- a/test/any_grpc.js
+++ /dev/null
@@ -1,39 +0,0 @@
-// TODO: Instead of attempting to expose both implementations of gRPC in
-// a single object, the tests should be re-written in a way that makes it clear
-// that two separate implementations are being tested against one another.
-
-const _ = require('lodash');
-
-function getImplementation(globalField) {
-  if (global[globalField] !== 'js' && global[globalField] !== 'native') {
-    throw new Error([
-      `Invalid value for global.${globalField}: ${global.globalField}.`,
-      'If running from the command line, please --require a fixture first.'
-    ].join(' '));
-  }
-  const impl = global[globalField];
-  return {
-    surface: require(`../packages/grpc-${impl}`),
-    pjson: require(`../packages/grpc-${impl}/package.json`),
-    core: require(`../packages/grpc-${impl}-core`),
-    corePjson: require(`../packages/grpc-${impl}-core/package.json`)
-  };
-}
-
-const clientImpl = getImplementation('_client_implementation');
-const serverImpl = getImplementation('_server_implementation');
-
-// We export a "merged" gRPC API by merging client and server specified
-// APIs together. Any function that is unspecific to client/server defaults
-// to client-side implementation.
-// This object also has a test-only field from which details about the
-// modules may be read.
-module.exports = Object.assign({
-  '$implementationInfo': {
-    client: clientImpl,
-    server: serverImpl
-  }
-}, clientImpl.surface, _.pick(serverImpl.surface, [
-  'Server',
-  'ServerCredentials'
-]));
diff --git a/test/api/async_test.js b/test/api/async_test.js
index 86cd62e2..e899da56 100644
--- a/test/api/async_test.js
+++ b/test/api/async_test.js
@@ -20,7 +20,7 @@
 
 var assert = require('assert');
 
-var grpc = require('../any_grpc');
+var grpc = require('grpc');
 var math = grpc.load(
     __dirname + '/../../packages/grpc-native-core/deps/grpc/src/proto/math/math.proto').math;
 
diff --git a/test/api/credentials_api_test.js b/test/api/credentials_api_test.js
deleted file mode 100644
index e79fca07..00000000
--- a/test/api/credentials_api_test.js
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC 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.
- *
- */
-
-'use strict';
-
-var assert = require('assert');
-var fs = require('fs');
-var path = require('path');
-
-var grpc = require('../any_grpc');
-
-var key_data, pem_data, ca_data;
-
-before(function() {
-  var key_path = path.join(__dirname, '../data/server1.key');
-  var pem_path = path.join(__dirname, '../data/server1.pem');
-  var ca_path = path.join(__dirname, '../data/ca.pem');
-  key_data = fs.readFileSync(key_path);
-  pem_data = fs.readFileSync(pem_path);
-  ca_data = fs.readFileSync(ca_path);
-});
-
-describe('channel credentials', function() {
-  describe('#createSsl', function() {
-    it('works with no arguments', function() {
-      var creds;
-      assert.doesNotThrow(function() {
-        creds = grpc.credentials.createSsl();
-      });
-      assert.notEqual(creds, null);
-    });
-    it('works with just one Buffer argument', function() {
-      var creds;
-      assert.doesNotThrow(function() {
-        creds = grpc.credentials.createSsl(ca_data);
-      });
-      assert.notEqual(creds, null);
-    });
-    it('works with 3 Buffer arguments', function() {
-      var creds;
-      assert.doesNotThrow(function() {
-        creds = grpc.credentials.createSsl(ca_data, key_data, pem_data);
-      });
-      assert.notEqual(creds, null);
-    });
-    it('works if the first argument is null', function() {
-      var creds;
-      assert.doesNotThrow(function() {
-        creds = grpc.credentials.createSsl(null, key_data, pem_data);
-      });
-      assert.notEqual(creds, null);
-    });
-    it('fails if the first argument is a non-Buffer value', function() {
-      assert.throws(function() {
-        grpc.credentials.createSsl('test');
-      }, TypeError);
-    });
-    it('fails if the second argument is a non-Buffer value', function() {
-      assert.throws(function() {
-        grpc.credentials.createSsl(null, 'test', pem_data);
-      }, TypeError);
-    });
-    it('fails if the third argument is a non-Buffer value', function() {
-      assert.throws(function() {
-        grpc.credentials.createSsl(null, key_data, 'test');
-      }, TypeError);
-    });
-    it('fails if only 1 of the last 2 arguments is provided', function() {
-      assert.throws(function() {
-        grpc.credentials.createSsl(null, key_data);
-      });
-      assert.throws(function() {
-        grpc.credentials.createSsl(null, null, pem_data);
-      });
-    });
-  });
-});
-
-describe('server credentials', function() {
-  describe('#createSsl', function() {
-    it('accepts a buffer and array as the first 2 arguments', function() {
-      var creds;
-      assert.doesNotThrow(function() {
-        creds = grpc.ServerCredentials.createSsl(ca_data, []);
-      });
-      assert.notEqual(creds, null);
-    });
-    it('accepts a boolean as the third argument', function() {
-      var creds;
-      assert.doesNotThrow(function() {
-        creds = grpc.ServerCredentials.createSsl(ca_data, [], true);
-      });
-      assert.notEqual(creds, null);
-    });
-    it('accepts an object with two buffers in the second argument', function() {
-      var creds;
-      assert.doesNotThrow(function() {
-        creds = grpc.ServerCredentials.createSsl(null,
-                                                 [{private_key: key_data,
-                                                   cert_chain: pem_data}]);
-      });
-      assert.notEqual(creds, null);
-    });
-    it('accepts multiple objects in the second argument', function() {
-      var creds;
-      assert.doesNotThrow(function() {
-        creds = grpc.ServerCredentials.createSsl(null,
-                                                 [{private_key: key_data,
-                                                   cert_chain: pem_data},
-                                                  {private_key: key_data,
-                                                   cert_chain: pem_data}]);
-      });
-      assert.notEqual(creds, null);
-    });
-    it('fails if the second argument is not an Array', function() {
-      assert.throws(function() {
-        grpc.ServerCredentials.createSsl(ca_data, 'test');
-      }, TypeError);
-    });
-    it('fails if the first argument is a non-Buffer value', function() {
-      assert.throws(function() {
-        grpc.ServerCredentials.createSsl('test', []);
-      }, TypeError);
-    });
-    it('fails if the third argument is a non-boolean value', function() {
-      assert.throws(function() {
-        grpc.ServerCredentials.createSsl(ca_data, [], 'test');
-      }, TypeError);
-    });
-    it('fails if the array elements are not objects', function() {
-      assert.throws(function() {
-        grpc.ServerCredentials.createSsl(ca_data, 'test');
-      }, TypeError);
-    });
-    it('fails if the object does not have a Buffer private_key', function() {
-      assert.throws(function() {
-        grpc.ServerCredentials.createSsl(null,
-                                         [{private_key: 'test',
-                                           cert_chain: pem_data}]);
-      }, TypeError);
-    });
-    it('fails if the object does not have a Buffer cert_chain', function() {
-      assert.throws(function() {
-        grpc.ServerCredentials.createSsl(null,
-                                         [{private_key: key_data,
-                                           cert_chain: 'test'}]);
-      }, TypeError);
-    });
-  });
-});
\ No newline at end of file
diff --git a/test/api/credentials_test.js b/test/api/credentials_test.js
index f9bdefaf..2f101134 100644
--- a/test/api/credentials_test.js
+++ b/test/api/credentials_test.js
@@ -22,7 +22,7 @@ var assert = require('assert');
 var fs = require('fs');
 var path = require('path');
 
-var grpc = require('../any_grpc');
+var grpc = require('grpc');
 
 /**
  * This is used for testing functions with multiple asynchronous calls that
diff --git a/test/api/file_load_test.js b/test/api/file_load_test.js
deleted file mode 100644
index c24a1100..00000000
--- a/test/api/file_load_test.js
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC 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.
- *
- */
-
-'use strict';
-
-var assert = require('assert');
-var grpc = require('../any_grpc');
-
-describe('File loader', function() {
-  it('Should load a proto file by default', function() {
-    assert.doesNotThrow(function() {
-      grpc.load(__dirname + '/test_service.proto');
-    });
-  });
-  it('Should load a proto file with the proto format', function() {
-    assert.doesNotThrow(function() {
-      grpc.load(__dirname + '/test_service.proto', 'proto');
-    });
-  });
-  it('Should load a json file with the json format', function() {
-    assert.doesNotThrow(function() {
-      grpc.load(__dirname + '/test_service.json', 'json');
-    });
-  });
-});
diff --git a/test/api/math/math_grpc_pb.js b/test/api/math/math_grpc_pb.js
index 68001847..afd08a34 100644
--- a/test/api/math/math_grpc_pb.js
+++ b/test/api/math/math_grpc_pb.js
@@ -16,7 +16,7 @@
 // limitations under the License.
 //
 'use strict';
-var grpc = require('../../any_grpc.js');
+var grpc = require('grpc');
 var math_math_pb = require('../math/math_pb.js');
 
 function serialize_DivArgs(arg) {
diff --git a/test/api/math/math_server.js b/test/api/math/math_server.js
index 70ad2dc5..05e30f72 100644
--- a/test/api/math/math_server.js
+++ b/test/api/math/math_server.js
@@ -18,7 +18,7 @@
 
 'use strict';
 
-var grpc = require('../../any_grpc.js');
+var grpc = require('grpc');
 var grpcMath = require('./math_grpc_pb');
 var math = require('./math_pb');
 
diff --git a/test/api/math_client_test.js b/test/api/math_client_test.js
index f4ba0951..09265abf 100644
--- a/test/api/math_client_test.js
+++ b/test/api/math_client_test.js
@@ -20,7 +20,7 @@
 
 var assert = require('assert');
 
-var grpc = require('../any_grpc');
+var grpc = require('grpc');
 var math = require('./math/math_pb');
 var MathClient = require('./math/math_grpc_pb').MathClient;
 
diff --git a/test/api/metadata_test.js b/test/api/metadata_test.js
index 7825383d..5e24f7ac 100644
--- a/test/api/metadata_test.js
+++ b/test/api/metadata_test.js
@@ -18,7 +18,7 @@
 
 'use strict';
 
-var Metadata = require('../any_grpc').Metadata;
+var Metadata = require('grpc').Metadata;
 
 var assert = require('assert');
 
diff --git a/test/api/surface_test.js b/test/api/surface_test.js
index 92802435..2a1bf5bf 100644
--- a/test/api/surface_test.js
+++ b/test/api/surface_test.js
@@ -21,7 +21,7 @@
 var assert = require('assert');
 var _ = require('lodash');
 
-var grpc = require('../any_grpc');
+var grpc = require('grpc');
 
 var MathClient = grpc.load(
     __dirname + '/../../packages/grpc-native-core/deps/grpc/src/proto/math/math.proto').math.Math;
@@ -485,7 +485,7 @@ describe('Echo metadata', function() {
     call.end();
   });
   it('shows the correct user-agent string', function(done) {
-    var version = require('../any_grpc')['$implementationInfo'].client.corePjson.version;
+    var version = require('grpc/package.json').version;
     var call = client.unary({}, metadata,
                             function(err, data) { assert.ifError(err); });
     call.on('metadata', function(metadata) {
diff --git a/test/fixtures/js_js.js b/test/fixtures/js_js.js
deleted file mode 100644
index e0ca3c58..00000000
--- a/test/fixtures/js_js.js
+++ /dev/null
@@ -1,2 +0,0 @@
-global._server_implementation = 'native';
-global._client_implementation = 'js';
\ No newline at end of file
diff --git a/test/fixtures/js_native.js b/test/fixtures/js_native.js
deleted file mode 100644
index 5088df96..00000000
--- a/test/fixtures/js_native.js
+++ /dev/null
@@ -1,2 +0,0 @@
-global._server_implementation = 'js';
-global._client_implementation = 'native';
\ No newline at end of file
diff --git a/test/fixtures/native_js.js b/test/fixtures/native_js.js
deleted file mode 100644
index 5088df96..00000000
--- a/test/fixtures/native_js.js
+++ /dev/null
@@ -1,2 +0,0 @@
-global._server_implementation = 'js';
-global._client_implementation = 'native';
\ No newline at end of file
diff --git a/test/fixtures/native_native.js b/test/fixtures/native_native.js
deleted file mode 100644
index 5b005e48..00000000
--- a/test/fixtures/native_native.js
+++ /dev/null
@@ -1,2 +0,0 @@
-global._server_implementation = 'native';
-global._client_implementation = 'native';
\ No newline at end of file
diff --git a/test/gulpfile.js b/test/gulpfile.js
index 70e05796..25e5e7b6 100644
--- a/test/gulpfile.js
+++ b/test/gulpfile.js
@@ -36,28 +36,5 @@ gulp.task('install', 'Install test dependencies', () => {
 gulp.task('clean.all', 'Delete all files created by tasks', () => {});
 
 gulp.task('test', 'Run API-level tests', () => {
-  // run mocha tests matching a glob with a pre-required fixture,
-  // returning the associated gulp stream
-  const apiTestGlob = `${apiTestDir}/*.js`;
-  const runTestsWithFixture = (server, client) => new Promise((resolve, reject) => {
-    const fixture = `${server}_${client}`;
-    console.log(`Running ${apiTestGlob} with ${server} server + ${client} client`);
-    gulp.src(apiTestGlob)
-      .pipe(mocha({
-        reporter: 'mocha-jenkins-reporter',
-        require: `${testDir}/fixtures/${fixture}.js`
-      }))
-      .resume() // put the stream in flowing mode
-      .on('end', resolve)
-      .on('error', reject);
-  });
-  const runTestsArgPairs = [
-    ['native', 'native'],
-    // ['native', 'js'],
-    // ['js', 'native'],
-    // ['js', 'js']
-  ];
-  return runTestsArgPairs.reduce((previousPromise, argPair) => {
-    return previousPromise.then(runTestsWithFixture.bind(null, argPair[0], argPair[1]));
-  }, Promise.resolve());
+  return gulp.src(`${apiTestDir}/*.js`).pipe(mocha({reporter: 'mocha-jenkins-reporter'}));
 });
diff --git a/test/interop/interop_client.js b/test/interop/interop_client.js
index 83890bca..66a46a44 100644
--- a/test/interop/interop_client.js
+++ b/test/interop/interop_client.js
@@ -20,7 +20,8 @@
 
 var fs = require('fs');
 var path = require('path');
-var grpc = require('../any_grpc')['$implementationInfo'].client.surface;
+// TODO(murgatroid99): use multiple grpc implementations
+var grpc = require('grpc');
 var testProto = grpc.load({
   root: __dirname + '/../../packages/grpc-native-core/deps/grpc',
   file: 'src/proto/grpc/testing/test.proto'}).grpc.testing;
diff --git a/test/interop/interop_server.js b/test/interop/interop_server.js
index fe1222dd..65bb088d 100644
--- a/test/interop/interop_server.js
+++ b/test/interop/interop_server.js
@@ -22,7 +22,8 @@ var fs = require('fs');
 var path = require('path');
 var _ = require('lodash');
 var AsyncDelayQueue = require('./async_delay_queue');
-var grpc = require('../any_grpc')['$implementationInfo'].server.surface;
+// TODO(murgatroid99): use multiple grpc implementations
+var grpc = require('grpc');
 var testProto = grpc.load({
   root: __dirname + '/../../packages/grpc-native-core/deps/grpc',
   file: 'src/proto/grpc/testing/test.proto'}).grpc.testing;