diff --git a/extensions/template/examples/collection.json b/extensions/template/examples/collection.json
index 24f0b78d..d11eca1b 100644
--- a/extensions/template/examples/collection.json
+++ b/extensions/template/examples/collection.json
@@ -27,7 +27,12 @@
   "assets": {
     "example": {
       "href": "https://example.com/examples/file.xyz",
-      "template:new_field": "test"
+      "template:new_field": "test",
+      "template:xyz": {
+        "x": 1,
+        "y": 2,
+        "z": 3
+      }
     }
   },
   "item_assets": {
diff --git a/extensions/template/non-examples/collection.json b/extensions/template/non-examples/collection.json
deleted file mode 100644
index 8776ed9d..00000000
--- a/extensions/template/non-examples/collection.json
+++ /dev/null
@@ -1,55 +0,0 @@
-{
-  "stac_version": "1.0.0",
-  "stac_extensions": [
-    "https://stac-extensions.github.io/item-assets/v1.0.0/schema.json",
-    "https://linz.github.io/stac/_STAC_VERSION_/template/schema.json"
-  ],
-  "type": "Collection",
-  "id": "collection",
-  "title": "A title",
-  "description": "This is a non-conformant STAC example using the template extension. The template:new_field is an integer rather than string.",
-  "license": "Apache-2.0",
-  "extent": {
-    "spatial": {
-      "bbox": [[172.9, 1.3, 173, 1.4]]
-    },
-    "temporal": {
-      "interval": [["2015-06-23T00:00:00Z", null]]
-    }
-  },
-  "template:new_field": 1234,
-  "template:xyz": {
-    "x": 1,
-    "y": 2,
-    "z": 3
-  },
-  "template:another_one": [1, 2, 3],
-  "assets": {
-    "example": {
-      "href": "https://example.com/examples/file.xyz",
-      "template:new_field": "test"
-    }
-  },
-  "item_assets": {
-    "data": {
-      "roles": ["data"],
-      "template:new_field": "test"
-    }
-  },
-  "summaries": {
-    "datetime": {
-      "minimum": "2015-06-23T00:00:00Z",
-      "maximum": "2019-07-10T13:44:56Z"
-    }
-  },
-  "links": [
-    {
-      "href": "https://example.com/examples/collection.json",
-      "rel": "self"
-    },
-    {
-      "href": "https://example.com/examples/item.json",
-      "rel": "item"
-    }
-  ]
-}
diff --git a/extensions/template/non-examples/item.json b/extensions/template/non-examples/item.json
deleted file mode 100644
index 135c62fe..00000000
--- a/extensions/template/non-examples/item.json
+++ /dev/null
@@ -1,40 +0,0 @@
-{
-  "stac_version": "1.0.0",
-  "stac_extensions": ["https://linz.github.io/stac/_STAC_VERSION_/template/schema.json"],
-  "type": "Feature",
-  "description": "This is a non-conformant STAC example using the template extension. It is missing the mandatory template:new_field.",
-  "id": "item",
-  "bbox": [172.9, 1.3, 173, 1.4],
-  "geometry": {
-    "type": "Polygon",
-    "coordinates": [
-      [
-        [172.9, 1.3],
-        [173, 1.3],
-        [173, 1.4],
-        [172.9, 1.4],
-        [172.9, 1.3]
-      ]
-    ]
-  },
-  "properties": {
-    "datetime": "2020-12-11T22:38:32Z",
-    "template:xyz": {
-      "x": 1,
-      "y": 2,
-      "z": 3
-    },
-    "template:another_one": [1, 2, 3]
-  },
-  "links": [
-    {
-      "href": "https://example.com/examples/item.json",
-      "rel": "self"
-    }
-  ],
-  "assets": {
-    "data": {
-      "href": "https://example.com/examples/file.xyz"
-    }
-  }
-}
diff --git a/extensions/template/tests/template_collection.test.js b/extensions/template/tests/template_collection.test.js
new file mode 100644
index 00000000..3b550f24
--- /dev/null
+++ b/extensions/template/tests/template_collection.test.js
@@ -0,0 +1,47 @@
+import o from 'ospec';
+import Ajv from 'ajv';
+import { dirname, join } from 'path';
+import { fileURLToPath } from 'url';
+import { promises as fs } from 'fs';
+import { AjvOptions } from '../../validation.js';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const schemaPath = join(__dirname, '..', 'schema.json');
+const exampleCollectionPath = join(__dirname, '..', 'examples/collection.json');
+
+o.spec('template-collection', () => {
+  o.specTimeout(20000);
+  let validate;
+  const ajv = new Ajv(AjvOptions);
+
+  o.before(async () => {
+    const data = JSON.parse(await fs.readFile(schemaPath));
+    validate = await ajv.compileAsync(data);
+  });
+
+  o('Collection should pass validation', async () => {
+    // given
+    const templateCollectionExample = JSON.parse(await fs.readFile(exampleCollectionPath));
+
+    // when
+    let valid = validate(templateCollectionExample);
+
+    // then
+    o(valid).equals(true)(JSON.stringify(validate.errors, null, 2));
+  });
+
+  o("Collection without mandatory 'y' field in the 'template:xyz object should fail validation", async () => {
+    // given
+    const templateCollectionExample = JSON.parse(await fs.readFile(exampleCollectionPath));
+    delete templateCollectionExample['assets']['example']['template:xyz']['y'];
+
+    // when
+    let valid = validate(templateCollectionExample);
+
+    // then
+    o(valid).equals(false);
+    o(validate.errors.some((error) => error.message === "should have required property 'y'")).equals(true)(
+      JSON.stringify(validate.errors),
+    );
+  });
+});
diff --git a/extensions/template/tests/template_item.test.js b/extensions/template/tests/template_item.test.js
new file mode 100644
index 00000000..cbd4e0b0
--- /dev/null
+++ b/extensions/template/tests/template_item.test.js
@@ -0,0 +1,46 @@
+import o from 'ospec';
+import Ajv from 'ajv';
+import { dirname, join } from 'path';
+import { fileURLToPath } from 'url';
+import { promises as fs } from 'fs';
+import { AjvOptions } from '../../validation.js';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const schemaPath = join(__dirname, '..', 'schema.json');
+const exampleItemPath = join(__dirname, '..', 'examples/item.json');
+
+o.spec('template-item', () => {
+  o.specTimeout(20000);
+  let validate;
+  const ajv = new Ajv(AjvOptions);
+
+  o.before(async () => {
+    const data = JSON.parse(await fs.readFile(schemaPath));
+    validate = await ajv.compileAsync(data);
+  });
+
+  o('Item should pass validation', async () => {
+    // given
+    const templateItemExample = JSON.parse(await fs.readFile(exampleItemPath));
+
+    // when
+    let valid = validate(templateItemExample);
+
+    // then
+    o(valid).equals(true)(JSON.stringify(validate.errors, null, 2));
+  });
+
+  o("Item without mandatory 'template:new_field' property should fail validation", async () => {
+    // given
+    const templateItemExample = JSON.parse(await fs.readFile(exampleItemPath));
+    delete templateItemExample.properties['template:new_field'];
+    // when
+    let valid = validate(templateItemExample);
+
+    // then
+    o(valid).equals(false);
+    o(
+      validate.errors.some((error) => error.message === "should have required property '['template:new_field']'"),
+    ).equals(true)(JSON.stringify(validate.errors));
+  });
+});