59 lines
1.2 KiB
Go
59 lines
1.2 KiB
Go
package main
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import (
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"bytes"
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"testing"
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"github.com/spf13/cobra"
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)
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// Test commands by executing them programmatically and capturing output.
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// Use cmd.OutOrStdout() and cmd.ErrOrStderr() in commands (instead of
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// os.Stdout / os.Stderr) so output can be captured in tests.
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func executeCommand(root *cobra.Command, args ...string) (string, error) {
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buf := new(bytes.Buffer)
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root.SetOut(buf)
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root.SetErr(buf)
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root.SetArgs(args)
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err := root.Execute()
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return buf.String(), err
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}
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func TestServeCommand(t *testing.T) {
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tests := []struct {
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name string
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args []string
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want string
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wantErr bool
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}{
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{
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name: "default port",
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args: []string{"serve"},
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want: "listening on :8080\n",
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},
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{
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name: "custom port",
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args: []string{"serve", "--port", "9090"},
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want: "listening on :9090\n",
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},
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{
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name: "missing required flag",
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args: []string{"serve", "--host", ""},
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wantErr: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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got, err := executeCommand(rootCmd, tt.args...)
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if (err != nil) != tt.wantErr {
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t.Errorf("error = %v, wantErr %v", err, tt.wantErr)
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}
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if !tt.wantErr && got != tt.want {
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t.Errorf("output = %q, want %q", got, tt.want)
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}
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})
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}
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}
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