internal/frontend : serve static assets (#392)

Signed-off-by: Bobby DeSimone <bobbydesimone@gmail.com>

internal/frontend/templates_test.go

@@ -0,0 +1,63 @@
+package frontend
+
+import (
+	"html/template"
+	"reflect"
+	"testing"
+
+	_ "github.com/pomerium/pomerium/internal/frontend/statik"
+	"github.com/rakyll/statik/fs"
+)
+
+func TestTemplatesCompile(t *testing.T) {
+	templates := template.Must(NewTemplates())
+	if templates == nil {
+		t.Errorf("unexpected nil value %#v", templates)
+	}
+}
+
+func TestNewTemplates(t *testing.T) {
+	tests := []struct {
+		name     string
+		testData string
+		want     *template.Template
+		wantErr  bool
+	}{
+		{"empty statik fs", "", nil, true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			fs.Register(tt.testData)
+			got, err := NewTemplates()
+			if (err != nil) != tt.wantErr {
+				t.Errorf("NewTemplates() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("NewTemplates() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestMustAssetHandler(t *testing.T) {
+	tests := []struct {
+		name      string
+		testData  string
+		wantPanic bool
+	}{
+		{"empty statik fs", "", true},
+		{"empty statik fs", "", false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			defer func() {
+				if r := recover(); r == nil {
+					t.Errorf("The code did not panic")
+				}
+			}()
+			MustAssetHandler()
+
+		})
+	}
+}