From 7c828ce3c0bf23ffb8a0a975dd1b39be104dde27 Mon Sep 17 00:00:00 2001
From: Daniel Banck <daniel@dbanck.de>
Date: Fri, 17 Apr 2026 18:10:11 +0200
Subject: [PATCH] Add test case for validate JSON diags

---
 internal/command/validate_test.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/internal/command/validate_test.go b/internal/command/validate_test.go
index cbf091ae3b..5827ac26a1 100644
--- a/internal/command/validate_test.go
+++ b/internal/command/validate_test.go
@@ -577,6 +577,22 @@ func TestValidate_json(t *testing.T) {
 	}
 }
 
+func TestValidate_ensure_json_diags(t *testing.T) {
+	output, code := setupTest(t, "validate-invalid", "-json", "-var", "foo")
+
+	if code != 1 {
+		t.Fatalf("Should have failed: %d\n\n%s", code, output.Stderr())
+	}
+
+	gotString := output.Stdout()
+
+	var got map[string]any
+	err := json.Unmarshal([]byte(gotString), &got)
+	if err != nil {
+		t.Fatalf("Test did not produce valid JSON: %s", err)
+	}
+}
+
 func TestValidateWithInvalidListResource(t *testing.T) {
 	td := t.TempDir()
 	cases := []struct {