Hi all, Consider the following test configuration:
func TestHandleCommand(t *testing.T) {
type expectedResult struct {
output string
err error
}
type testConfig struct {
args []string
result expectedResult
}
testConfigs := []testConfig{
testConfig{
args: []string{"-h"},
result: expectedResult{
err: nil,
output: `Expected output`,
},
},
}
Then, I do this:
for _, tc := range testConfigs {
byteBuf := new(bytes.Buffer)
w := bufio.NewWriter(byteBuf)
err := handleCommand(w, tc.args)
if tc.result.err == nil && err != nil {
t.Errorf("Expected nil error, got %v", err)
}
if tc.result.err != nil && err.Error() != tc.result.err.Error() {
t.Errorf("Expected error %v, got %v", tc.result.err, err)
}
if len(tc.result.output) != 0 {
w.Flush()
gotOutput := byteBuf.String()
if tc.result.output != gotOutput {
t.Errorf("Expected output to be: %v, Got: %v",
tc.result.output, gotOutput)
}
}
}
}
The above pattern works for me since the function may return an error
and/or it may have something it writes to the provided writer, w.
Is there a more concise way to write this?
Thanks,
Amit.
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