chore(curl): Add nil pointer checks and tests for the outputResult fu…

docs/stackit_curl.md

@@ -17,7 +17,7 @@ stackit curl URL [flags]
   $ stackit curl https://dns.api.stackit.cloud/v1/projects/xxx/zones
 
   Get all the DNS zones for project with ID xxx via GET request to https://dns.api.stackit.cloud/v1/projects/xxx/zones, write complete response (headers and body) to file "./output.txt"
-  $ stackit curl https://dns.api.stackit.cloud/v1/projects/xxx/zones -include --output ./output.txt
+  $ stackit curl https://dns.api.stackit.cloud/v1/projects/xxx/zones --include --output ./output.txt
 
   Create a new DNS zone for project with ID xxx via POST request to https://dns.api.stackit.cloud/v1/projects/xxx/zones with payload from file "./payload.json"
   $ stackit curl https://dns.api.stackit.cloud/v1/projects/xxx/zones -X POST --data @./payload.json

internal/cmd/curl/curl.go

@@ -56,7 +56,7 @@ func NewCmd(p *print.Printer) *cobra.Command {
 			),
 			examples.NewExample(
 				`Get all the DNS zones for project with ID xxx via GET request to https://dns.api.stackit.cloud/v1/projects/xxx/zones, write complete response (headers and body) to file "./output.txt"`,
-				"$ stackit curl https://dns.api.stackit.cloud/v1/projects/xxx/zones -include --output ./output.txt",
+				"$ stackit curl https://dns.api.stackit.cloud/v1/projects/xxx/zones --include --output ./output.txt",
 			),
 			examples.NewExample(
 				`Create a new DNS zone for project with ID xxx via POST request to https://dns.api.stackit.cloud/v1/projects/xxx/zones with payload from file "./payload.json"`,
@@ -198,6 +198,9 @@ func buildRequest(model *inputModel, bearerToken string) (*http.Request, error)
 }
 
 func outputResponse(p *print.Printer, model *inputModel, resp *http.Response) error {
+	if resp == nil {
+		return fmt.Errorf("http response is empty")
+	}
 	output := make([]byte, 0)
 	if model.IncludeResponseHeaders {
 		respHeader, err := httputil.DumpResponse(resp, false)
@@ -215,7 +218,7 @@ func outputResponse(p *print.Printer, model *inputModel, resp *http.Response) er
 	if model.OutputFile == nil {
 		p.Outputln(string(output))
 	} else {
-		err = os.WriteFile(*model.OutputFile, output, 0o600)
+		err = os.WriteFile(utils.PtrString(model.OutputFile), output, 0o600)
 		if err != nil {
 			return fmt.Errorf("write output to file: %w", err)
 		}

internal/cmd/curl/curl_test.go

@@ -5,16 +5,16 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"os"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/spf13/viper"
 	"github.com/stackitcloud/stackit-cli/internal/pkg/config"
 	"github.com/stackitcloud/stackit-cli/internal/pkg/globalflags"
 	"github.com/stackitcloud/stackit-cli/internal/pkg/print"
 	"github.com/stackitcloud/stackit-cli/internal/pkg/utils"
-
-	"github.com/google/go-cmp/cmp"
-	"github.com/google/go-cmp/cmp/cmpopts"
 )
 
 var testURL = "https://some-service.api.stackit.cloud/v1/foo?bar=baz"
@@ -37,7 +37,7 @@ func fixtureFlagValues(mods ...func(flagValues map[string]string)) map[string]st
 		dataFlag:                   "data",
 		includeResponseHeadersFlag: "true",
 		failOnHTTPErrorFlag:        "true",
-		outputFileFlag:             "path/to/output.txt",
+		outputFileFlag:             "./output.txt",
 	}
 	for _, mod := range mods {
 		mod(flagValues)
@@ -53,7 +53,7 @@ func fixtureInputModel(mods ...func(model *inputModel)) *inputModel {
 		Data:                   utils.Ptr("data"),
 		IncludeResponseHeaders: true,
 		FailOnHTTPError:        true,
-		OutputFile:             utils.Ptr("path/to/output.txt"),
+		OutputFile:             utils.Ptr("./output.txt"),
 	}
 	for _, mod := range mods {
 		mod(model)
@@ -403,3 +403,45 @@ func TestBuildRequest(t *testing.T) {
 		})
 	}
 }
+
+func TestOutputResponse(t *testing.T) {
+	type args struct {
+		model *inputModel
+		resp  *http.Response
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantErr bool
+	}{
+		{
+			name:    "empty",
+			args:    args{},
+			wantErr: true,
+		},
+		{
+			name: "http response as argument",
+			args: args{
+				model: fixtureInputModel(),
+				resp:  &http.Response{Body: http.NoBody},
+			},
+			wantErr: false,
+		},
+	}
+	p := print.NewPrinter()
+	p.Cmd = NewCmd(p)
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if err := outputResponse(p, tt.args.model, tt.args.resp); (err != nil) != tt.wantErr {
+				t.Errorf("outputResponse() error = %v, wantErr %v", err, tt.wantErr)
+			}
+			if tt.args.model != nil {
+				if _, err := os.Stat(*tt.args.model.OutputFile); err == nil {
+					if err := os.Remove(*tt.args.model.OutputFile); err != nil {
+						t.Errorf("remove output file error = %v", err)
+					}
+				}
+			}
+		})
+	}
+}