1 files changed, 164 insertions, 0 deletions

diff --git a/editors/code/src/test/vscode_diagnostics.test.ts b/editors/code/src/test/vscode_diagnostics.test.ts
new file mode 100644
index 000000000..ca4345626
--- /dev/null
+++ b/editors/code/src/test/vscode_diagnostics.test.ts
@@ -0,0 +1,164 @@
+import * as assert from 'assert';
+import * as vscode from 'vscode';
+
+import {
+    areCodeActionsEqual,
+    areDiagnosticsEqual
+} from '../utils/vscode_diagnostics';
+
+const uri = vscode.Uri.file('/file/1');
+
+const range1 = new vscode.Range(
+    new vscode.Position(1, 2),
+    new vscode.Position(3, 4)
+);
+
+const range2 = new vscode.Range(
+    new vscode.Position(5, 6),
+    new vscode.Position(7, 8)
+);
+
+describe('areDiagnosticsEqual', () => {
+    it('should treat identical diagnostics as equal', () => {
+        const diagnostic1 = new vscode.Diagnostic(
+            range1,
+            'Hello, world!',
+            vscode.DiagnosticSeverity.Error
+        );
+
+        const diagnostic2 = new vscode.Diagnostic(
+            range1,
+            'Hello, world!',
+            vscode.DiagnosticSeverity.Error
+        );
+
+        assert(areDiagnosticsEqual(diagnostic1, diagnostic2));
+    });
+
+    it('should treat diagnostics with different ranges as inequal', () => {
+        const diagnostic1 = new vscode.Diagnostic(
+            range1,
+            'Hello, world!',
+            vscode.DiagnosticSeverity.Error
+        );
+
+        const diagnostic2 = new vscode.Diagnostic(
+            range2,
+            'Hello, world!',
+            vscode.DiagnosticSeverity.Error
+        );
+
+        assert(!areDiagnosticsEqual(diagnostic1, diagnostic2));
+    });
+
+    it('should treat diagnostics with different messages as inequal', () => {
+        const diagnostic1 = new vscode.Diagnostic(
+            range1,
+            'Hello, world!',
+            vscode.DiagnosticSeverity.Error
+        );
+
+        const diagnostic2 = new vscode.Diagnostic(
+            range1,
+            'Goodbye!, world!',
+            vscode.DiagnosticSeverity.Error
+        );
+
+        assert(!areDiagnosticsEqual(diagnostic1, diagnostic2));
+    });
+
+    it('should treat diagnostics with different severities as inequal', () => {
+        const diagnostic1 = new vscode.Diagnostic(
+            range1,
+            'Hello, world!',
+            vscode.DiagnosticSeverity.Warning
+        );
+
+        const diagnostic2 = new vscode.Diagnostic(
+            range1,
+            'Hello, world!',
+            vscode.DiagnosticSeverity.Error
+        );
+
+        assert(!areDiagnosticsEqual(diagnostic1, diagnostic2));
+    });
+});
+
+describe('areCodeActionsEqual', () => {
+    it('should treat identical actions as equal', () => {
+        const codeAction1 = new vscode.CodeAction(
+            'Fix me!',
+            vscode.CodeActionKind.QuickFix
+        );
+
+        const codeAction2 = new vscode.CodeAction(
+            'Fix me!',
+            vscode.CodeActionKind.QuickFix
+        );
+
+        const edit = new vscode.WorkspaceEdit();
+        edit.replace(uri, range1, 'Replace with this');
+        codeAction1.edit = edit;
+        codeAction2.edit = edit;
+
+        assert(areCodeActionsEqual(codeAction1, codeAction2));
+    });
+
+    it('should treat actions with different types as inequal', () => {
+        const codeAction1 = new vscode.CodeAction(
+            'Fix me!',
+            vscode.CodeActionKind.Refactor
+        );
+
+        const codeAction2 = new vscode.CodeAction(
+            'Fix me!',
+            vscode.CodeActionKind.QuickFix
+        );
+
+        const edit = new vscode.WorkspaceEdit();
+        edit.replace(uri, range1, 'Replace with this');
+        codeAction1.edit = edit;
+        codeAction2.edit = edit;
+
+        assert(!areCodeActionsEqual(codeAction1, codeAction2));
+    });
+
+    it('should treat actions with different titles as inequal', () => {
+        const codeAction1 = new vscode.CodeAction(
+            'Fix me!',
+            vscode.CodeActionKind.Refactor
+        );
+
+        const codeAction2 = new vscode.CodeAction(
+            'Do something different!',
+            vscode.CodeActionKind.Refactor
+        );
+
+        const edit = new vscode.WorkspaceEdit();
+        edit.replace(uri, range1, 'Replace with this');
+        codeAction1.edit = edit;
+        codeAction2.edit = edit;
+
+        assert(!areCodeActionsEqual(codeAction1, codeAction2));
+    });
+
+    it('should treat actions with different edits as inequal', () => {
+        const codeAction1 = new vscode.CodeAction(
+            'Fix me!',
+            vscode.CodeActionKind.Refactor
+        );
+        const edit1 = new vscode.WorkspaceEdit();
+        edit1.replace(uri, range1, 'Replace with this');
+        codeAction1.edit = edit1;
+
+        const codeAction2 = new vscode.CodeAction(
+            'Fix me!',
+            vscode.CodeActionKind.Refactor
+        );
+        const edit2 = new vscode.WorkspaceEdit();
+        edit2.replace(uri, range1, 'Replace with this other thing');
+        codeAction2.edit = edit2;
+
+        assert(!areCodeActionsEqual(codeAction1, codeAction2));
+    });
+});