Fix cli version comparison and improve setup command (#3518)

cli/update/updater_test.go

@@ -0,0 +1,61 @@
+package update
+
+import (
+	"context"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"testing"
+
+	"go.woodpecker-ci.org/woodpecker/v2/version"
+)
+
+func TestCheckForUpdate(t *testing.T) {
+	version.Version = "1.0.0"
+	fixtureHandler := func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/version.json" {
+			http.NotFound(w, r)
+			return
+		}
+
+		_, _ = io.WriteString(w, `{"latest": "1.0.1", "next": "1.0.2", "rc": "1.0.3"}`)
+	}
+	ts := httptest.NewServer(http.HandlerFunc(fixtureHandler))
+	defer ts.Close()
+
+	newVersion, err := checkForUpdate(context.Background(), ts.URL+"/version.json", false)
+	if err != nil {
+		t.Fatalf("Failed to check for updates: %v", err)
+	}
+
+	if newVersion == nil || newVersion.Version != "1.0.1" {
+		t.Fatalf("Expected a new version 1.0.1, got: %s", newVersion)
+	}
+}
+
+func TestDownloadNewVersion(t *testing.T) {
+	downloadFilePath := "/woodpecker-cli_linux_amd64.tar.gz"
+
+	fixtureHandler := func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != downloadFilePath {
+			http.NotFound(w, r)
+			return
+		}
+
+		_, _ = io.WriteString(w, `blob`)
+	}
+	ts := httptest.NewServer(http.HandlerFunc(fixtureHandler))
+	defer ts.Close()
+
+	file, err := downloadNewVersion(context.Background(), ts.URL+downloadFilePath)
+	if err != nil {
+		t.Fatalf("Failed to download new version: %v", err)
+	}
+
+	if file == "" {
+		t.Fatalf("Expected a file path, got: %s", file)
+	}
+
+	_ = os.Remove(file)
+}