57 lines
1.2 KiB
Go
57 lines
1.2 KiB
Go
package pflag
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import (
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"os"
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"testing"
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)
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func setUpCount(c *int) *FlagSet {
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f := NewFlagSet("test", ContinueOnError)
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f.CountVarP(c, "verbose", "v", "a counter")
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return f
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}
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func TestCount(t *testing.T) {
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testCases := []struct {
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input []string
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success bool
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expected int
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}{
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{[]string{}, true, 0},
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{[]string{"-v"}, true, 1},
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{[]string{"-vvv"}, true, 3},
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{[]string{"-v", "-v", "-v"}, true, 3},
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{[]string{"-v", "--verbose", "-v"}, true, 3},
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{[]string{"-v=3", "-v"}, true, 4},
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{[]string{"--verbose=0"}, true, 0},
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{[]string{"-v=0"}, true, 0},
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{[]string{"-v=a"}, false, 0},
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}
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devnull, _ := os.Open(os.DevNull)
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os.Stderr = devnull
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for i := range testCases {
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var count int
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f := setUpCount(&count)
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tc := &testCases[i]
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err := f.Parse(tc.input)
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if err != nil && tc.success == true {
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t.Errorf("expected success, got %q", err)
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continue
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} else if err == nil && tc.success == false {
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t.Errorf("expected failure, got success")
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continue
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} else if tc.success {
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c, err := f.GetCount("verbose")
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if err != nil {
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t.Errorf("Got error trying to fetch the counter flag")
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}
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if c != tc.expected {
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t.Errorf("expected %d, got %d", tc.expected, c)
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}
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}
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}
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}
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