improve interacting with ollama api and models

tests/Feature/EmbeddingToolsTest.php

@@ -8,16 +8,8 @@ use Laravel\Ai\Embeddings;
 use Laravel\Ai\Prompts\EmbeddingsPrompt;
 use Livewire\Livewire;
 
-beforeEach(function () {
-    config([
-        'ai.default_for_embeddings' => 'ollama',
-        'ai.providers.ollama.url' => 'http://ollama.test',
-        'ai.providers.ollama.models.embeddings.default' => 'test-embed',
-        'ai.providers.ollama.models.embeddings.available' => ['test-embed'],
-        'ai.providers.ollama.models.embeddings.dimensions' => 3,
-    ]);
-
-    Http::preventStrayRequests();
+function fakeEmbeddingToolOllamaModels(): void
+{
     Http::fake([
         'http://ollama.test/api/tags' => Http::response([
             'models' => [
@@ -26,6 +18,23 @@ beforeEach(function () {
             ],
         ]),
     ]);
+}
+
+function fakeUnavailableEmbeddingToolOllama(): void
+{
+    Http::fake([
+        'http://ollama.test/api/tags' => Http::response(['error' => 'offline'], 500),
+    ]);
+}
+
+beforeEach(function () {
+    config([
+        'ai.default_for_embeddings' => 'ollama',
+        'ai.providers.ollama.url' => 'http://ollama.test',
+        'ai.providers.ollama.models.embeddings.dimensions' => 3,
+    ]);
+
+    Http::preventStrayRequests();
 });
 
 test('guests are redirected from embedding pages', function (string $route) {
@@ -44,6 +53,8 @@ test('embeddings index redirects to embed page', function () {
 });
 
 test('authenticated users can open embedding pages', function (string $route, string $text) {
+    fakeEmbeddingToolOllamaModels();
+
     $this->actingAs(User::factory()->create());
 
     $this->get(route($route))
@@ -56,6 +67,8 @@ test('authenticated users can open embedding pages', function (string $route, st
 ]);
 
 test('comparison page renders separate phrase inputs', function () {
+    fakeEmbeddingToolOllamaModels();
+
     $this->actingAs(User::factory()->create());
 
     $this->get(route('embeddings.compare'))
@@ -67,6 +80,8 @@ test('comparison page renders separate phrase inputs', function () {
 });
 
 test('comparison phrase inputs can be added and removed', function () {
+    fakeEmbeddingToolOllamaModels();
+
     $this->actingAs(User::factory()->create());
 
     Livewire::test('pages::embeddings.compare')
@@ -90,6 +105,8 @@ test('app header has a menu item for each embedding tool', function () {
 });
 
 test('embedding pages do not duplicate tool navigation below the header', function () {
+    fakeEmbeddingToolOllamaModels();
+
     $this->actingAs(User::factory()->create());
 
     $response = $this->get(route('embeddings.embed'))->assertOk();
@@ -100,6 +117,8 @@ test('embedding pages do not duplicate tool navigation below the header', functi
 });
 
 test('embedding model options are fetched from ollama', function () {
+    fakeEmbeddingToolOllamaModels();
+
     $this->actingAs(User::factory()->create());
 
     $component = Livewire::test('pages::embeddings.embed');
@@ -110,16 +129,48 @@ test('embedding model options are fetched from ollama', function () {
     Http::assertSent(fn ($request): bool => $request->url() === 'http://ollama.test/api/tags');
 });
 
-test('first ollama model is selected when configured default is unavailable', function () {
-    config(['ai.providers.ollama.models.embeddings.default' => 'missing-default']);
+test('first ollama model is selected from the api model list', function () {
+    fakeEmbeddingToolOllamaModels();
 
     $this->actingAs(User::factory()->create());
 
     Livewire::test('pages::embeddings.embed')
+        ->assertSet('ollamaAvailable', true)
         ->assertSet('embeddingModel', 'test-embed');
 });
 
+test('embedding pages show when ollama is unavailable', function () {
+    fakeUnavailableEmbeddingToolOllama();
+
+    $this->actingAs(User::factory()->create());
+
+    Livewire::test('pages::embeddings.embed')
+        ->assertSet('ollamaAvailable', false)
+        ->assertSet('embeddingModel', '')
+        ->assertSee(__('Ollama is unavailable'))
+        ->assertSee(__('Ollama offline'));
+});
+
+test('embedding actions stop when ollama model list is unavailable', function () {
+    fakeUnavailableEmbeddingToolOllama();
+
+    Embeddings::fake();
+
+    $this->actingAs(User::factory()->create());
+
+    Livewire::test('pages::embeddings.embed')
+        ->set('embeddingInput', 'apple')
+        ->call('generateEmbeddings')
+        ->assertHasErrors('embeddingModel');
+
+    expect(EmbeddingEntry::query()->count())->toBe(0);
+
+    Embeddings::assertNothingGenerated();
+});
+
 test('phrases can be embedded and stored', function () {
+    fakeEmbeddingToolOllamaModels();
+
     Embeddings::fake([
         [
             [1, 0, 0],
@@ -155,6 +206,8 @@ test('phrases can be embedded and stored', function () {
 });
 
 test('similarity search ranks stored embeddings', function () {
+    fakeEmbeddingToolOllamaModels();
+
     Embeddings::fake([
         [
             [1, 0, 0],
@@ -196,6 +249,8 @@ test('similarity search ranks stored embeddings', function () {
 });
 
 test('comparison builds a pairwise similarity matrix', function () {
+    fakeEmbeddingToolOllamaModels();
+
     Embeddings::fake([
         [
             [1, 0, 0],