1 files changed, 164 insertions, 0 deletions
diff --git a/dev/lib/handlebars/src/spec/index.strict.test.ts b/dev/lib/handlebars/src/spec/index.strict.test.ts
new file mode 100644
index 00000000..a8f294b9
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+++ b/dev/lib/handlebars/src/spec/index.strict.test.ts
@@ -0,0 +1,164 @@
+/*
+ * This file is forked from the handlebars project (https://github.com/handlebars-lang/handlebars.js),
+ * and may include modifications made by Elasticsearch B.V.
+ * Elasticsearch B.V. licenses this file to you under the MIT License.
+ * See `packages/kbn-handlebars/LICENSE` for more information.
+ */
+
+import { expectTemplate } from '../__jest__/test_bench';
+
+describe('strict', () => {
+  describe('strict mode', () => {
+    it('should error on missing property lookup', () => {
+      expectTemplate('{{hello}}')
+        .withCompileOptions({ strict: true })
+        .toThrow(/"hello" not defined in/);
+    });
+
+    it('should error on missing child', () => {
+      expectTemplate('{{hello.bar}}')
+        .withCompileOptions({ strict: true })
+        .withInput({ hello: { bar: 'foo' } })
+        .toCompileTo('foo');
+
+      expectTemplate('{{hello.bar}}')
+        .withCompileOptions({ strict: true })
+        .withInput({ hello: {} })
+        .toThrow(/"bar" not defined in/);
+    });
+
+    it('should handle explicit undefined', () => {
+      expectTemplate('{{hello.bar}}')
+        .withCompileOptions({ strict: true })
+        .withInput({ hello: { bar: undefined } })
+        .toCompileTo('');
+    });
+
+    it('should error on missing property lookup in known helpers mode', () => {
+      expectTemplate('{{hello}}')
+        .withCompileOptions({
+          strict: true,
+          knownHelpersOnly: true,
+        })
+        .toThrow(/"hello" not defined in/);
+    });
+
+    it('should error on missing context', () => {
+      expectTemplate('{{hello}}').withCompileOptions({ strict: true }).toThrow(Error);
+    });
+
+    it('should error on missing data lookup', () => {
+      const xt = expectTemplate('{{@hello}}').withCompileOptions({
+        strict: true,
+      });
+
+      xt.toThrow(Error);
+
+      xt.withRuntimeOptions({ data: { hello: 'foo' } }).toCompileTo('foo');
+    });
+
+    it('should not run helperMissing for helper calls', () => {
+      expectTemplate('{{hello foo}}')
+        .withCompileOptions({ strict: true })
+        .withInput({ foo: true })
+        .toThrow(/"hello" not defined in/);
+
+      expectTemplate('{{#hello foo}}{{/hello}}')
+        .withCompileOptions({ strict: true })
+        .withInput({ foo: true })
+        .toThrow(/"hello" not defined in/);
+    });
+
+    it('should throw on ambiguous blocks', () => {
+      expectTemplate('{{#hello}}{{/hello}}')
+        .withCompileOptions({ strict: true })
+        .toThrow(/"hello" not defined in/);
+
+      expectTemplate('{{^hello}}{{/hello}}')
+        .withCompileOptions({ strict: true })
+        .toThrow(/"hello" not defined in/);
+
+      expectTemplate('{{#hello.bar}}{{/hello.bar}}')
+        .withCompileOptions({ strict: true })
+        .withInput({ hello: {} })
+        .toThrow(/"bar" not defined in/);
+    });
+
+    it('should allow undefined parameters when passed to helpers', () => {
+      expectTemplate('{{#unless foo}}success{{/unless}}')
+        .withCompileOptions({ strict: true })
+        .toCompileTo('success');
+    });
+
+    it('should allow undefined hash when passed to helpers', () => {
+      expectTemplate('{{helper value=@foo}}')
+        .withCompileOptions({
+          strict: true,
+        })
+        .withHelpers({
+          helper(options) {
+            expect('value' in options.hash).toEqual(true);
+            expect(options.hash.value).toBeUndefined();
+            return 'success';
+          },
+        })
+        .toCompileTo('success');
+    });
+
+    it('should show error location on missing property lookup', () => {
+      expectTemplate('\n\n\n   {{hello}}')
+        .withCompileOptions({ strict: true })
+        .toThrow('"hello" not defined in [object Object] - 4:5');
+    });
+
+    it('should error contains correct location properties on missing property lookup', () => {
+      try {
+        expectTemplate('\n\n\n   {{hello}}')
+          .withCompileOptions({ strict: true })
+          .toCompileTo('throw before asserting this');
+      } catch (error) {
+        expect(error.lineNumber).toEqual(4);
+        expect(error.endLineNumber).toEqual(4);
+        expect(error.column).toEqual(5);
+        expect(error.endColumn).toEqual(10);
+      }
+    });
+  });
+
+  describe('assume objects', () => {
+    it('should ignore missing property', () => {
+      expectTemplate('{{hello}}').withCompileOptions({ assumeObjects: true }).toCompileTo('');
+    });
+
+    it('should ignore missing child', () => {
+      expectTemplate('{{hello.bar}}')
+        .withCompileOptions({ assumeObjects: true })
+        .withInput({ hello: {} })
+        .toCompileTo('');
+    });
+
+    it('should error on missing object', () => {
+      expectTemplate('{{hello.bar}}').withCompileOptions({ assumeObjects: true }).toThrow(Error);
+    });
+
+    it('should error on missing context', () => {
+      expectTemplate('{{hello}}')
+        .withCompileOptions({ assumeObjects: true })
+        .withInput(undefined)
+        .toThrow(Error);
+    });
+
+    it('should error on missing data lookup', () => {
+      expectTemplate('{{@hello.bar}}')
+        .withCompileOptions({ assumeObjects: true })
+        .withInput(undefined)
+        .toThrow(Error);
+    });
+
+    it('should execute blockHelperMissing', () => {
+      expectTemplate('{{^hello}}foo{{/hello}}')
+        .withCompileOptions({ assumeObjects: true })
+        .toCompileTo('foo');
+    });
+  });
+});