Full stack tests

fn/client/call_fn.go

@@ -0,0 +1,53 @@
+package client
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+)
+
+func EnvAsHeader(req *http.Request, selectedEnv []string) {
+	detectedEnv := os.Environ()
+	if len(selectedEnv) > 0 {
+		detectedEnv = selectedEnv
+	}
+
+	for _, e := range detectedEnv {
+		kv := strings.Split(e, "=")
+		name := kv[0]
+		req.Header.Set(name, os.Getenv(name))
+	}
+}
+
+
+func CallFN(u string, content io.Reader, output io.Writer, method string, env []string) error {
+	if method == "" {
+		if content == nil {
+			method = "GET"
+		} else {
+			method = "POST"
+		}
+	}
+
+	req, err := http.NewRequest(method, u, content)
+	if err != nil {
+		return fmt.Errorf("error running route: %s", err)
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+
+	if len(env) > 0 {
+		EnvAsHeader(req, env)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("error running route: %s", err)
+	}
+
+	io.Copy(output, resp.Body)
+
+	return nil
+}