diff --git a/tests/deps.mocha.js b/tests/deps.mocha.js
index 25b784759..a2782f746 100644
--- a/tests/deps.mocha.js
+++ b/tests/deps.mocha.js
@@ -20,7 +20,7 @@ goog.addDependency('../../tests/mocha/field_dropdown_test.js', ['Blockly.test.fi
 goog.addDependency('../../tests/mocha/field_image_test.js', ['Blockly.test.fieldImage'], ['Blockly.test.helpers', 'Blockly.test.helpers.fields'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/field_label_serializable_test.js', ['Blockly.test.fieldLabelSerialization'], ['Blockly.test.helpers', 'Blockly.test.helpers.fields'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/field_label_test.js', ['Blockly.test.fieldLabel'], ['Blockly.test.helpers', 'Blockly.test.helpers.fields'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../tests/mocha/field_multilineinput_test.js', ['Blockly.test.fieldMultiline'], ['Blockly.test.blockHelpers', 'Blockly.test.helpers', 'Blockly.test.helpers.fields'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../tests/mocha/field_multilineinput_test.js', ['Blockly.test.fieldMultiline'], ['Blockly.test.helpers', 'Blockly.test.helpers.codeGeneration', 'Blockly.test.helpers.fields'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/field_number_test.js', ['Blockly.test.fieldNumber'], ['Blockly.test.helpers', 'Blockly.test.helpers.common', 'Blockly.test.helpers.fields'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/field_registry_test.js', ['Blockly.test.fieldRegistry'], ['Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/field_test.js', ['Blockly.test.fieldTest'], ['Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
@@ -35,19 +35,20 @@ goog.addDependency('../../tests/mocha/jso_deserialization_test.js', ['Blockly.te
 goog.addDependency('../../tests/mocha/jso_serialization_test.js', ['Blockly.test.jsoSerialization'], ['Blockly.test.helpers'], {'lang': 'es8', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/json_test.js', ['Blockly.test.json'], ['Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/keydown_test.js', ['Blockly.test.keydown'], ['Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../tests/mocha/logic_ternary_test.js', ['Blockly.test.logicTernary'], ['Blockly.Events.utils', 'Blockly.test.blockHelpers', 'Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../tests/mocha/logic_ternary_test.js', ['Blockly.test.logicTernary'], ['Blockly.Events.utils', 'Blockly.test.helpers', 'Blockly.test.helpers.serialization'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/metrics_test.js', ['Blockly.test.metrics'], ['Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/mutator_test.js', ['Blockly.test.mutator'], ['Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/names_test.js', ['Blockly.test.names'], ['Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../tests/mocha/procedures_test.js', ['Blockly.test.procedures'], ['Blockly', 'Blockly.Msg', 'Blockly.test.blockHelpers', 'Blockly.test.helpers', 'Blockly.test.helpers.procedures'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../tests/mocha/procedures_test.js', ['Blockly.test.procedures'], ['Blockly', 'Blockly.Msg', 'Blockly.test.helpers', 'Blockly.test.helpers.procedures', 'Blockly.test.helpers.serialization'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/registry_test.js', ['Blockly.test.registry'], ['Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/run_mocha_tests_in_browser.js', [], [], {'lang': 'es8'});
 goog.addDependency('../../tests/mocha/serializer_test.js', ['Blockly.test.serialization'], ['Blockly.test.helpers', 'Blockly.test.helpers.common'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/shortcut_registry_test.js', ['Blockly.test.shortcutRegistry'], ['Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../tests/mocha/test_helpers/block_test_helpers.mocha.js', ['Blockly.test.blockHelpers'], ['Blockly.test.helpers.common'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../tests/mocha/test_helpers/code_generation.js', ['Blockly.test.helpers.codeGeneration'], ['Blockly.test.helpers.common'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/test_helpers/common.js', ['Blockly.test.helpers.common'], [], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/test_helpers/fields.js', ['Blockly.test.helpers.fields'], ['Blockly.test.helpers.common'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/test_helpers/procedures.js', ['Blockly.test.helpers.procedures'], ['Blockly.ConnectionType'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../tests/mocha/test_helpers/serialization.js', ['Blockly.test.helpers.serialization'], ['Blockly.test.helpers.common'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/test_helpers/test_helpers.js', ['Blockly.test.helpers'], ['Blockly.Events.utils', 'Blockly.blocks', 'Blockly.test.helpers.common', 'Blockly.utils.KeyCodes'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/test_helpers/toolbox_definitions.js', ['Blockly.test.helpers.toolbox_definitions'], [], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../tests/mocha/test_helpers/workspace.js', ['Blockly.test.helpers.workspace'], ['Blockly.Events.utils', 'Blockly.test.helpers'], {'lang': 'es6', 'module': 'goog'});
diff --git a/tests/mocha/field_multilineinput_test.js b/tests/mocha/field_multilineinput_test.js
index ed966c012..4a2cc807e 100644
--- a/tests/mocha/field_multilineinput_test.js
+++ b/tests/mocha/field_multilineinput_test.js
@@ -8,7 +8,7 @@ goog.module('Blockly.test.fieldMultiline');
 
 const {assertFieldValue, runConstructorSuiteTests, runFromJsonSuiteTests, runSetValueTests} = goog.require('Blockly.test.helpers.fields');
 const {createTestBlock, defineRowBlock, sharedTestSetup, sharedTestTeardown, workspaceTeardown} = goog.require('Blockly.test.helpers');
-const {runCodeGenerationTestSuites} = goog.require('Blockly.test.blockHelpers');
+const {runCodeGenerationTestSuites} = goog.require('Blockly.test.helpers.codeGeneration');
 
 
 suite('Multiline Input Fields', function() {
diff --git a/tests/mocha/logic_ternary_test.js b/tests/mocha/logic_ternary_test.js
index 8c7711281..9b7a8f3b0 100644
--- a/tests/mocha/logic_ternary_test.js
+++ b/tests/mocha/logic_ternary_test.js
@@ -7,7 +7,7 @@
 goog.module('Blockly.test.logicTernary');
 
 const eventUtils = goog.require('Blockly.Events.utils');
-const {runSerializationTestSuite} = goog.require('Blockly.test.blockHelpers');
+const {runSerializationTestSuite} = goog.require('Blockly.test.helpers.serialization');
 const {sharedTestSetup, sharedTestTeardown} = goog.require('Blockly.test.helpers');
 
 
diff --git a/tests/mocha/procedures_test.js b/tests/mocha/procedures_test.js
index 57871bfd4..9ac95a1b0 100644
--- a/tests/mocha/procedures_test.js
+++ b/tests/mocha/procedures_test.js
@@ -9,7 +9,7 @@ goog.module('Blockly.test.procedures');
 goog.require('Blockly');
 goog.require('Blockly.Msg');
 const {assertCallBlockStructure, assertDefBlockStructure, createProcDefBlock, createProcCallBlock} = goog.require('Blockly.test.helpers.procedures');
-const {runSerializationTestSuite} = goog.require('Blockly.test.blockHelpers');
+const {runSerializationTestSuite} = goog.require('Blockly.test.helpers.serialization');
 const {sharedTestSetup, sharedTestTeardown, workspaceTeardown} = goog.require('Blockly.test.helpers');
 
 
diff --git a/tests/mocha/test_helpers/code_generation.js b/tests/mocha/test_helpers/code_generation.js
new file mode 100644
index 000000000..b25dc1c09
--- /dev/null
+++ b/tests/mocha/test_helpers/code_generation.js
@@ -0,0 +1,117 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+goog.module('Blockly.test.helpers.codeGeneration');
+
+const {runTestSuites} = goog.require('Blockly.test.helpers.common');
+
+
+/**
+ * Code generation test case configuration.
+ * @implements {TestCase}
+ * @record
+ */
+class CodeGenerationTestCase {
+  /**
+   * Class for a code generation test case.
+   */
+  constructor() {
+    /**
+     * @type {string} The expected code.
+     */
+    this.expectedCode;
+    /**
+     * @type {boolean|undefined} Whether to use workspaceToCode instead of
+     * blockToCode for test.
+     */
+    this.useWorkspaceToCode;
+    /**
+     * @type {number|undefined} The expected inner order.
+     */
+    this.expectedInnerOrder;
+  }
+
+  /**
+   * Creates the block to use for this test case.
+   * @param {!Blockly.Workspace} workspace The workspace context for this
+   *    test.
+   * @return {!Blockly.Block} The block to use for the test case.
+   */
+  createBlock(workspace) {}
+}
+exports.CodeGenerationTestCase = CodeGenerationTestCase;
+
+/**
+ * Code generation test suite.
+ * @extends {TestSuite<CodeGenerationTestCase, CodeGenerationTestSuite>}
+ * @record
+ */
+class CodeGenerationTestSuite {
+  /**
+   * Class for a code generation test suite.
+   */
+  constructor() {
+    /**
+     * @type {!Blockly.Generator} The generator to use for running test cases.
+     */
+    this.generator;
+  }
+}
+exports.CodeGenerationTestSuite = CodeGenerationTestSuite;
+
+/**
+ * Returns mocha test callback for code generation based on provided
+ *    generator.
+ * @param {!Blockly.Generator} generator The generator to use in test.
+ * @return {function(!CodeGenerationTestCase):!Function} Function that
+ *    returns mocha test callback based on test case.
+ * @private
+ */
+const createCodeGenerationTestFn_ = (generator) => {
+  return (testCase) => {
+    return function() {
+      const block = testCase.createBlock(this.workspace);
+      let code;
+      let innerOrder;
+      if (testCase.useWorkspaceToCode) {
+        code = generator.workspaceToCode(this.workspace);
+      } else {
+        generator.init(this.workspace);
+        code = generator.blockToCode(block);
+        if (Array.isArray(code)) {
+          innerOrder = code[1];
+          code = code[0];
+        }
+      }
+      const assertFunc = (typeof testCase.expectedCode === 'string') ?
+          chai.assert.equal : chai.assert.match;
+      assertFunc(code, testCase.expectedCode);
+      if (!testCase.useWorkspaceToCode &&
+          testCase.expectedInnerOrder !== undefined) {
+        chai.assert.equal(innerOrder, testCase.expectedInnerOrder);
+      }
+    };
+  };
+};
+
+/**
+ * Runs blockToCode test suites.
+ * @param {!Array<!CodeGenerationTestSuite>} testSuites The test suites to run.
+ */
+const runCodeGenerationTestSuites = (testSuites) => {
+  /**
+   * Creates function used to generate mocha test callback.
+   * @param {!CodeGenerationTestSuite} suiteInfo The test suite information.
+   * @return {function(!CodeGenerationTestCase):!Function} Function that
+   *    creates mocha test callback.
+   */
+  const createTestFn = (suiteInfo) => {
+    return createCodeGenerationTestFn_(suiteInfo.generator);
+  };
+
+  runTestSuites(testSuites, createTestFn);
+};
+exports.runCodeGenerationTestSuites = runCodeGenerationTestSuites;
\ No newline at end of file
diff --git a/tests/mocha/test_helpers/block_test_helpers.mocha.js b/tests/mocha/test_helpers/serialization.js
similarity index 56%
rename from tests/mocha/test_helpers/block_test_helpers.mocha.js
rename to tests/mocha/test_helpers/serialization.js
index f43c3727a..c8b90ba7f 100644
--- a/tests/mocha/test_helpers/block_test_helpers.mocha.js
+++ b/tests/mocha/test_helpers/serialization.js
@@ -4,63 +4,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-goog.module('Blockly.test.blockHelpers');
+goog.module('Blockly.test.helpers.serialization');
 
-const {runTestCases, runTestSuites, TestCase, TestSuite} = goog.require('Blockly.test.helpers.common');
-
-
-/**
- * Code generation test case configuration.
- * @implements {TestCase}
- * @record
- */
-class CodeGenerationTestCase {
-  /**
-   * Class for a code generation test case.
-   */
-  constructor() {
-    /**
-     * @type {string} The expected code.
-     */
-    this.expectedCode;
-    /**
-     * @type {boolean|undefined} Whether to use workspaceToCode instead of
-     * blockToCode for test.
-     */
-    this.useWorkspaceToCode;
-    /**
-     * @type {number|undefined} The expected inner order.
-     */
-    this.expectedInnerOrder;
-  }
-
-  /**
-   * Creates the block to use for this test case.
-   * @param {!Blockly.Workspace} workspace The workspace context for this
-   *    test.
-   * @return {!Blockly.Block} The block to use for the test case.
-   */
-  createBlock(workspace) {}
-}
-exports.CodeGenerationTestCase = CodeGenerationTestCase;
-
-/**
- * Code generation test suite.
- * @extends {TestSuite<CodeGenerationTestCase, CodeGenerationTestSuite>}
- * @record
- */
-class CodeGenerationTestSuite {
-  /**
-   * Class for a code generation test suite.
-   */
-  constructor() {
-    /**
-     * @type {!Blockly.Generator} The generator to use for running test cases.
-     */
-    this.generator;
-  }
-}
-exports.CodeGenerationTestSuite = CodeGenerationTestSuite;
+const {runTestCases} = goog.require('Blockly.test.helpers.common');
 
 /**
  * Serialization test case.
@@ -101,60 +47,6 @@ class SerializationTestCase {
 }
 exports.SerializationTestCase = SerializationTestCase;
 
-/**
- * Returns mocha test callback for code generation based on provided
- *    generator.
- * @param {!Blockly.Generator} generator The generator to use in test.
- * @return {function(!CodeGenerationTestCase):!Function} Function that
- *    returns mocha test callback based on test case.
- * @private
- */
-const createCodeGenerationTestFn_ = (generator) => {
-  return (testCase) => {
-    return function() {
-      const block = testCase.createBlock(this.workspace);
-      let code;
-      let innerOrder;
-      if (testCase.useWorkspaceToCode) {
-        code = generator.workspaceToCode(this.workspace);
-      } else {
-        generator.init(this.workspace);
-        code = generator.blockToCode(block);
-        if (Array.isArray(code)) {
-          innerOrder = code[1];
-          code = code[0];
-        }
-      }
-      const assertFunc = (typeof testCase.expectedCode === 'string') ?
-          chai.assert.equal : chai.assert.match;
-      assertFunc(code, testCase.expectedCode);
-      if (!testCase.useWorkspaceToCode &&
-          testCase.expectedInnerOrder !== undefined) {
-        chai.assert.equal(innerOrder, testCase.expectedInnerOrder);
-      }
-    };
-  };
-};
-
-/**
- * Runs blockToCode test suites.
- * @param {!Array<!CodeGenerationTestSuite>} testSuites The test suites to run.
- */
-const runCodeGenerationTestSuites = (testSuites) => {
-  /**
-   * Creates function used to generate mocha test callback.
-   * @param {!CodeGenerationTestSuite} suiteInfo The test suite information.
-   * @return {function(!CodeGenerationTestCase):!Function} Function that
-   *    creates mocha test callback.
-   */
-  const createTestFn = (suiteInfo) => {
-    return createCodeGenerationTestFn_(suiteInfo.generator);
-  };
-
-  runTestSuites(testSuites, createTestFn);
-};
-exports.runCodeGenerationTestSuites = runCodeGenerationTestSuites;
-
 /**
  * Runs serialization test suite.
  * @param {!Array<!SerializationTestCase>} testCases The test cases to run.