// Copyright 2026 Stefan Prodan.
// SPDX-License-Identifier: AGPL-3.0
package main
import (
"fmt"
"net/http"
"net/http/httptest"
"os"
"testing"
. "github.com/onsi/gomega"
)
func TestDiffYAMLCmd(t *testing.T) {
tests := []struct {
name string
args []string
goldenFile string
expectError string
}{
{
name: "json-patch-yaml output (default)",
args: []string{"diff", "yaml", "testdata/diff_yaml/source.yaml", "testdata/diff_yaml/target.yaml"},
goldenFile: "testdata/diff_yaml/golden-json-patch-yaml.yaml",
},
{
name: "json-patch output",
args: []string{"diff", "yaml", "testdata/diff_yaml/source.yaml", "testdata/diff_yaml/target.yaml", "--output=json-patch"},
goldenFile: "testdata/diff_yaml/golden-json-patch.json",
},
{
name: "identical files",
args: []string{"diff", "yaml", "testdata/diff_yaml/source.yaml", "testdata/diff_yaml/identical.yaml"},
},
{
name: "missing args",
args: []string{"diff", "yaml"},
expectError: "accepts 2 arg(s), received 0",
},
{
name: "single arg",
args: []string{"diff", "yaml", "testdata/diff_yaml/source.yaml"},
expectError: "accepts 2 arg(s), received 1",
},
{
name: "nonexistent source file",
args: []string{"diff", "yaml", "nonexistent.yaml", "testdata/diff_yaml/target.yaml"},
expectError: "fetching source",
},
{
name: "nonexistent target file",
args: []string{"diff", "yaml", "testdata/diff_yaml/source.yaml", "nonexistent.yaml"},
expectError: "fetching target",
},
{
name: "unsupported output format",
args: []string{"diff", "yaml", "testdata/diff_yaml/source.yaml", "testdata/diff_yaml/target.yaml", "--output=text"},
expectError: "unsupported output format",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
g := NewWithT(t)
output, err := executeCommand(tt.args)
if tt.expectError != "" {
g.Expect(err).To(HaveOccurred())
g.Expect(err.Error()).To(ContainSubstring(tt.expectError))
return
}
g.Expect(err).ToNot(HaveOccurred())
if tt.goldenFile != "" {
expected, err := os.ReadFile(tt.goldenFile)
g.Expect(err).ToNot(HaveOccurred())
g.Expect(output).To(Equal(string(expected)))
} else {
g.Expect(output).To(ContainSubstring("null"))
}
})
}
}
func TestDiffYAMLCmd_RemoteURL(t *testing.T) {
g := NewWithT(t)
sourceData, err := os.ReadFile("testdata/diff_yaml/source.yaml")
g.Expect(err).ToNot(HaveOccurred())
targetData, err := os.ReadFile("testdata/diff_yaml/target.yaml")
g.Expect(err).ToNot(HaveOccurred())
mux := http.NewServeMux()
mux.HandleFunc("/source.yaml", func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write(sourceData)
})
mux.HandleFunc("/target.yaml", func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write(targetData)
})
ts := httptest.NewServer(mux)
defer ts.Close()
output, err := executeCommand([]string{
"diff", "yaml",
fmt.Sprintf("%s/source.yaml", ts.URL),
fmt.Sprintf("%s/target.yaml", ts.URL),
"--output=json-patch",
})
g.Expect(err).ToNot(HaveOccurred())
expected, err := os.ReadFile("testdata/diff_yaml/golden-json-patch.json")
g.Expect(err).ToNot(HaveOccurred())
g.Expect(output).To(Equal(string(expected)))
}
