diff --git a/common/web/types/.gitignore b/common/web/types/.gitignore
index 2f943a2f4e9..dcb567b832b 100644
--- a/common/web/types/.gitignore
+++ b/common/web/types/.gitignore
@@ -1,2 +1,3 @@
 src/schemas/
-obj/
\ No newline at end of file
+obj/
+coverage/
diff --git a/common/web/types/test/ldml-keyboard/test-string-list.ts b/common/web/types/test/ldml-keyboard/test-string-list.ts
new file mode 100644
index 00000000000..58365bda66b
--- /dev/null
+++ b/common/web/types/test/ldml-keyboard/test-string-list.ts
@@ -0,0 +1,216 @@
+/*
+ * Keyman is copyright (C) SIL Global. MIT License.
+ * 
+ * Created by Dr Mark C. Sinclair on 2024-11-28
+ * 
+ * Test code for string-lists.ts
+ */
+
+import 'mocha';
+import { assert } from 'chai';
+import { StrsItem, StrsOptions, DependencySections, Strs } from '../../src/kmx/kmx-plus/kmx-plus.js';
+import { ListIndex, ListItem } from '../../src/ldml-keyboard/string-list.js';
+
+describe('Test of String-List', () => {
+  describe('Test ListIndex', () => {
+    it('can construct a ListIndex', () => {
+      const strsItem = new StrsItem("abc");
+      const actual   = new ListIndex(strsItem);
+      assert.deepEqual(actual.value, strsItem);
+    });
+    it('can check two ListIndex for equality', () => {
+      const listItemOne = new ListIndex(new StrsItem("abc"));
+      const listItemTwo = new ListIndex(new StrsItem("abc"));
+      assert.isTrue(listItemOne.isEqual(listItemTwo));
+    });
+    it('can check two different ListIndex are not equal', () => {
+      const listItemOne = new ListIndex(new StrsItem("abc"));
+      const listItemTwo = new ListIndex(new StrsItem("def"));
+      assert.isFalse(listItemOne.isEqual(listItemTwo));
+    });
+    it('can check a ListIndex and string for equality', () => {
+      const listItem = new ListIndex(new StrsItem("abc"));
+      const aString = "abc";
+      assert.isTrue(listItem.isEqual(aString));
+    });
+    it('can check a ListIndex and string for inequality', () => {
+      const listItem = new ListIndex(new StrsItem("abc"));
+      const aString = "def";
+      assert.isFalse(listItem.isEqual(aString));
+    });
+    it('can provide a correct string representation', () => {
+      const strsItem = new StrsItem("abc");
+      const listItem = new ListIndex(strsItem);
+      const expected = "abc";
+      assert.deepEqual(listItem.toString(), expected);
+    });
+  });
+  describe('Test ListItem', () => {
+    describe('Test fromStrings()', () => {
+      it('should return an empty ListItem if source is null', () => {
+        const actual   = ListItem.fromStrings(null, null, null);
+        const expected = new ListItem();
+        assert.deepEqual(actual, expected);
+      });
+      it('should return a valid ListItem from a single source string', () => {
+        const source = ["abc"];
+        const sections = { strs: new Strs };
+        sections.strs.allocString = stubSectionsStrsAllocString;
+        const actual   = ListItem.fromStrings(source, null, sections);
+        const expected = initListItem(source);
+        assert.deepEqual(actual, expected);
+      });
+      it('should return a valid ListItem from a longer source', () => {
+        const source = ["abc", "def", "ghi"];
+        const sections = { strs: new Strs };
+        sections.strs.allocString = stubSectionsStrsAllocString;
+        const actual   = ListItem.fromStrings(source, null, sections);
+        const expected = initListItem(source);
+        assert.deepEqual(actual, expected);
+      });
+    });
+    describe('Test getItemOrder()', () => {
+      it('should return a valid index for the first item', () => {
+        const listItem = initListItem(["abc", "def", "ghi"]);
+        const index = listItem.getItemOrder("abc");
+        assert.equal(index, 0);
+      });
+      it('should return a valid index for a later item', () => {
+        const listItem = initListItem(["abc", "def", "ghi"]);
+        const index = listItem.getItemOrder("ghi");
+        assert.equal(index, 2);
+      });
+      it('should return -1 for a missing item', () => {
+        const listItem = initListItem(["abc", "def", "ghi"]);
+        const index    = listItem.getItemOrder("jkl");
+        assert.equal(index, -1);
+      });
+    });
+    describe('Test isEqual()', () => {
+      it('should return true for two empty ListItems', () => {
+        const listItemOne = new ListItem();
+        const listItemTwo = new ListItem();
+        assert.isTrue(listItemOne.isEqual(listItemTwo));
+      });
+      it('should return false for empty and non-empty ListItems', () => {
+        const listItemOne = new ListItem();
+        const listItemTwo = initListItem(["abc"]);
+        assert.isFalse(listItemOne.isEqual(listItemTwo));
+      });
+      it('should return false for non-empty and empty ListItems', () => {
+        const listItemOne = initListItem(["abc"]);
+        const listItemTwo = new ListItem();
+        assert.isFalse(listItemOne.isEqual(listItemTwo));
+      });
+      it('should return true for identical ListItems', () => {
+        const listItemOne = initListItem(["abc", "def", "ghi"]);
+        const listItemTwo = initListItem(["abc", "def", "ghi"]);
+        assert.isTrue(listItemOne.isEqual(listItemTwo));
+      });
+      it('should return false for different ListItems', () => {
+        const listItemOne = initListItem(["abc", "def", "ghi"]);
+        const listItemTwo = initListItem(["abd", "def", "ghi"]);
+        assert.isFalse(listItemOne.isEqual(listItemTwo));
+      });
+      it('should return false for different length ListItems', () => {
+        const listItemOne = initListItem(["abc", "def"]);
+        const listItemTwo = initListItem(["abc", "def", "ghi"]);
+        assert.isFalse(listItemOne.isEqual(listItemTwo));
+      });
+      it('should return true for empty ListItem and string[]', () => {
+        const listItem = new ListItem();
+        assert.isTrue(listItem.isEqual([]));
+      });
+      it('should return false for empty ListItem and non-empty string[]', () => {
+        const listItem = new ListItem();
+        assert.isFalse(listItem.isEqual(["abc"]));
+      });
+      it('should return false for non-empty ListItem and empty string[]', () => {
+        const listItem = initListItem(["abc"]);;
+        assert.isFalse(listItem.isEqual([]));
+      });
+      it('should return true for identical ListItem and string[]', () => {
+        const listItem = initListItem(["abc", "def", "ghi"]);
+        assert.isTrue(listItem.isEqual(["abc", "def", "ghi"]));
+      });
+      it('should return false for different ListItem and string[]', () => {
+        const listItem = initListItem(["abc", "def", "ghi"]);
+        assert.isFalse(listItem.isEqual(["abd", "def", "ghi"]));
+      });
+      it('should return false for different length ListItem and string[]', () => {
+        const listItem = initListItem(["abc", "def"]);
+        assert.isFalse(listItem.isEqual(["abc", "def", "ghi"]));
+      });
+    });
+    describe('Test compareTo()', () => {
+      it('should return 0 for identical ListItems', () => {
+        const listItemOne = initListItem(["abc", "def", "ghi"]);
+        const listItemTwo = initListItem(["abc", "def", "ghi"]);
+        assert.equal(listItemOne.compareTo(listItemTwo), 0);
+      });
+      it('should return -1 for ListItems with different first items (smallest first)', () => {
+        const listItemOne = initListItem(["abc", "def", "ghi"]);
+        const listItemTwo = initListItem(["abd", "def", "ghi"]);
+        assert.equal(listItemOne.compareTo(listItemTwo), -1);
+      });
+      it('should return 1 for ListItems with different first items (smallest second)', () => {
+        const listItemOne = initListItem(["abd", "def", "ghi"]);
+        const listItemTwo = initListItem(["abc", "def", "ghi"]);
+        assert.equal(listItemOne.compareTo(listItemTwo), 1);
+      });
+      it('should return -1 for ListItems with different later items (smallest first)', () => {
+        const listItemOne = initListItem(["abc", "def", "ghi"]);
+        const listItemTwo = initListItem(["abc", "def", "ghj"]);
+        assert.equal(listItemOne.compareTo(listItemTwo), -1);
+      });
+      it('should return 1 for ListItems with different later items (smallest second)', () => {
+        const listItemOne = initListItem(["abc", "def", "ghj"]);
+        const listItemTwo = initListItem(["abc", "def", "ghi"]);
+        assert.equal(listItemOne.compareTo(listItemTwo), 1);
+      });
+      it('should return -1 for identical ListItems, except shorter first', () => {
+        const listItemOne = initListItem(["abc", "def", "ghi"]);
+        const listItemTwo = initListItem(["abc", "def", "ghi", "jkl"]);
+        assert.equal(listItemOne.compareTo(listItemTwo), -1);
+      });
+      it('should return 1 for identical ListItems, except longer first', () => {
+        const listItemOne = initListItem(["abc", "def", "ghi", "jkl"]);
+        const listItemTwo = initListItem(["abc", "def", "ghi"]);
+        assert.equal(listItemOne.compareTo(listItemTwo), 1);
+      });
+    });
+    describe('Test toString()', () => {
+      it('should return correct string', () => {
+        const listItem = initListItem(["abc", "def", "ghi"]);
+        assert.deepEqual(listItem.toString(), "abc def ghi");
+      });
+      it('should return correct string for empty ListItem', () => {
+        const listItem = new ListItem;
+        assert.deepEqual(listItem.toString(), "");
+      });
+    });
+    describe('Test toStringArray()', () => {
+      it('should return correct string[]', () => {
+        const source   = ["abc", "def", "ghi"];
+        const listItem = initListItem(source);
+        assert.deepEqual(listItem.toStringArray(), source);
+      });
+      it('should return correct string[] for empty ListItem', () => {
+        const listItem = new ListItem;
+        assert.deepEqual(listItem.toStringArray(), []);
+      });
+    }); 
+  });
+});
+
+function stubSectionsStrsAllocString(s?: string, opts?: StrsOptions, sections?: DependencySections): StrsItem {
+  return new StrsItem(s);
+}
+
+function initListItem(source: Array<string>): ListItem {
+  const listItem = new ListItem();
+  for (const s of source) {
+    listItem.push(new ListIndex(new StrsItem(s)));
+  }
+  return listItem;
+}