From 1c3b1cf18d14eb795f949ed05c4a6741dc582485 Mon Sep 17 00:00:00 2001
From: Charles Lyding <19598772+clydin@users.noreply.github.com>
Date: Wed, 28 Jan 2026 16:57:29 -0500
Subject: [PATCH] fix(localize): add support for unit-test builder in ng-add
 schematic

This commit updates the @angular/localize ng-add schematic to support
the @angular/build:unit-test builder. It ensures that @angular/localize
is added to the types array in the TypeScript configuration file
associated with the unit-test target. If no tsConfig is specified in
the target options, it defaults to tsconfig.spec.json in the project root.
---
 packages/localize/schematics/ng-add/index.ts  | 15 ++++-
 .../localize/schematics/ng-add/index_spec.ts  | 64 ++++++++++++++++++-
 2 files changed, 75 insertions(+), 4 deletions(-)

diff --git a/packages/localize/schematics/ng-add/index.ts b/packages/localize/schematics/ng-add/index.ts
index 26c3a3e99ff..54db51468bf 100644
--- a/packages/localize/schematics/ng-add/index.ts
+++ b/packages/localize/schematics/ng-add/index.ts
@@ -79,13 +79,26 @@ function addTypeScriptConfigTypes(projectName: string): Rule {
         case AngularBuilder.BrowserEsbuild:
         case AngularBuilder.Browser:
         case AngularBuilder.Application:
-        case AngularBuilder.BuildApplication:
+        case AngularBuilder.BuildKarma:
+        case AngularBuilder.BuildApplication: {
           const value = target.options?.['tsConfig'];
           if (typeof value === 'string') {
             tsConfigFiles.add(value);
           }
 
           break;
+        }
+        case AngularBuilder.BuildUnitTest: {
+          const value = target.options?.['tsConfig'];
+          if (typeof value === 'string') {
+            tsConfigFiles.add(value);
+          } else {
+            // Defaults to tsconfig in project root
+            tsConfigFiles.add((project.root || '.') + '/tsconfig.spec.json');
+          }
+
+          break;
+        }
       }
 
       if (
diff --git a/packages/localize/schematics/ng-add/index_spec.ts b/packages/localize/schematics/ng-add/index_spec.ts
index 65a177e0f4d..8f36f9dc01c 100644
--- a/packages/localize/schematics/ng-add/index_spec.ts
+++ b/packages/localize/schematics/ng-add/index_spec.ts
@@ -73,17 +73,27 @@ describe('ng-add schematic', () => {
               test: {
                 builder: '@angular-devkit/build-angular:karma',
                 options: {
-                  tsConfig: './tsconfig.spec.json',
+                  tsConfig: './tsconfig.spec-k1.json',
                   polyfills: 'zone.js',
                 },
               },
               testKarmaBuild: {
                 builder: '@angular/build:karma',
                 options: {
-                  tsConfig: './tsconfig.spec.json',
+                  tsConfig: './tsconfig.spec-k2.json',
                   polyfills: 'zone.js',
                 },
               },
+              testBuildUnitTestA: {
+                builder: '@angular/build:unit-test',
+                options: {
+                  tsConfig: './tsconfig.spec-a.json',
+                },
+              },
+              testBuildUnitTestB: {
+                builder: '@angular/build:unit-test',
+                options: {},
+              },
               server: {
                 builder: '@angular-devkit/build-angular:server',
                 options: {
@@ -194,7 +204,55 @@ describe('ng-add schematic', () => {
     expect(polyfills).toEqual(['@angular/localize/init']);
   });
 
-  it(`should add '@angular/localize' in 'types' tsconfigs referenced in karma builder`, async () => {
+  it(`should add '@angular/localize' in 'types' tsconfigs referenced in devkit karma builder`, async () => {
+    const tsConfig = JSON.stringify({
+      compilerOptions: {
+        types: ['node'],
+      },
+    });
+
+    host.create('tsconfig.spec-k1.json', tsConfig);
+
+    host = await schematicRunner.runSchematic('ng-add', defaultOptions, host);
+    const {compilerOptions} = host.readJson('tsconfig.spec-k1.json') as TsConfig;
+    const types = compilerOptions?.types;
+    expect(types).toContain('@angular/localize');
+    expect(types).toHaveSize(2);
+  });
+
+  it(`should add '@angular/localize' in 'types' tsconfigs referenced in build karma builder`, async () => {
+    const tsConfig = JSON.stringify({
+      compilerOptions: {
+        types: ['node'],
+      },
+    });
+
+    host.create('tsconfig.spec-k2.json', tsConfig);
+
+    host = await schematicRunner.runSchematic('ng-add', defaultOptions, host);
+    const {compilerOptions} = host.readJson('tsconfig.spec-k2.json') as TsConfig;
+    const types = compilerOptions?.types;
+    expect(types).toContain('@angular/localize');
+    expect(types).toHaveSize(2);
+  });
+
+  it(`should add '@angular/localize' in 'types' tsconfigs referenced in unit-test builder`, async () => {
+    const tsConfig = JSON.stringify({
+      compilerOptions: {
+        types: ['node'],
+      },
+    });
+
+    host.create('tsconfig.spec-a.json', tsConfig);
+
+    host = await schematicRunner.runSchematic('ng-add', defaultOptions, host);
+    const {compilerOptions} = host.readJson('tsconfig.spec-a.json') as TsConfig;
+    const types = compilerOptions?.types;
+    expect(types).toContain('@angular/localize');
+    expect(types).toHaveSize(2);
+  });
+
+  it(`should add '@angular/localize' in 'types' tsconfigs default for unit-test builder`, async () => {
     const tsConfig = JSON.stringify({
       compilerOptions: {
         types: ['node'],