AzureMonitor: strongly-typed AzureCredentials and correct resolution of auth type and cloud (#36284)

pkg/tsdb/azuremonitor/httpclient_test.go

@@ -0,0 +1,54 @@
+package azuremonitor
+
+import (
+	"testing"
+
+	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/tsdb/azuremonitor/azcredentials"
+	"github.com/stretchr/testify/require"
+)
+
+func Test_httpCliProvider(t *testing.T) {
+	cfg := &setting.Cfg{}
+	model := datasourceInfo{
+		Credentials: &azcredentials.AzureClientSecretCredentials{},
+	}
+	tests := []struct {
+		name                string
+		route               azRoute
+		expectedMiddlewares int
+		Err                 require.ErrorAssertionFunc
+	}{
+		{
+			name: "creates an HTTP client with a middleware",
+			route: azRoute{
+				URL:    "http://route",
+				Scopes: []string{"http://route/.default"},
+			},
+			expectedMiddlewares: 1,
+			Err:                 require.NoError,
+		},
+		{
+			name: "creates an HTTP client without a middleware",
+			route: azRoute{
+				URL:    "http://route",
+				Scopes: []string{},
+			},
+			// httpclient.NewProvider returns a client with 2 middlewares by default
+			expectedMiddlewares: 2,
+			Err:                 require.NoError,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cli, err := httpClientProvider(tt.route, model, cfg)
+			require.NoError(t, err)
+
+			// Cannot test that the cli middleware works properly since the azcore sdk
+			// rejects the TLS certs (if provided)
+			if len(cli.Opts.Middlewares) != tt.expectedMiddlewares {
+				t.Errorf("Unexpected middlewares: %v", cli.Opts.Middlewares)
+			}
+		})
+	}
+}