diff --git a/tests/col-bounds-required.test.ts b/tests/training-sheets/col-bounds-required.test.ts
similarity index 93%
rename from tests/col-bounds-required.test.ts
rename to tests/training-sheets/col-bounds-required.test.ts
index d0c08a70..31e8905a 100644
--- a/tests/col-bounds-required.test.ts
+++ b/tests/training-sheets/col-bounds-required.test.ts
@@ -1,5 +1,5 @@
 import * as O from 'fp-ts/Option';
-import {columnBoundsRequired} from '../src/training-sheets/google';
+import {columnBoundsRequired} from '../../src/training-sheets/google';
 
 describe('columnBoundsRequired', () => {
   [
diff --git a/tests/get-chunk-indexes.test.ts b/tests/training-sheets/get-chunk-indexes.test.ts
similarity index 91%
rename from tests/get-chunk-indexes.test.ts
rename to tests/training-sheets/get-chunk-indexes.test.ts
index 1af51139..6ca7101e 100644
--- a/tests/get-chunk-indexes.test.ts
+++ b/tests/training-sheets/get-chunk-indexes.test.ts
@@ -1,4 +1,4 @@
-import {getChunkIndexes} from '../src/util';
+import {getChunkIndexes} from '../../src/util';
 
 describe('Get chunk indexes', () => {
   [
diff --git a/tests/training-sheets/google-timezone.test.ts b/tests/training-sheets/google-timezone.test.ts
new file mode 100644
index 00000000..6e0aceb3
--- /dev/null
+++ b/tests/training-sheets/google-timezone.test.ts
@@ -0,0 +1,25 @@
+import {GoogleTimezone} from '../../src/init-dependencies/google/pull_sheet_data';
+import {getRightOrFail} from '../helpers';
+
+describe('Google timezone parse', () => {
+  it('Empty default', () => {
+    expect(getRightOrFail(GoogleTimezone.decode(''))).toStrictEqual(
+      'Europe/London'
+    );
+  });
+  it('Malformed default', () => {
+    expect(getRightOrFail(GoogleTimezone.decode(null))).toStrictEqual(
+      'Europe/London'
+    );
+  });
+  it('Known timezone', () => {
+    expect(getRightOrFail(GoogleTimezone.decode('Africa/Cairo'))).toStrictEqual(
+      'Africa/Cairo'
+    );
+  });
+  it('Unknown timezone', () => {
+    expect(
+      getRightOrFail(GoogleTimezone.decode('Makespace/Cambridge'))
+    ).toStrictEqual('Europe/London');
+  });
+});