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Signed-off-by: yxxhero <aiopsclub@163.com>
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package cmd | ||
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import ( | ||
"bytes" | ||
"io" | ||
"os" | ||
"os/exec" | ||
"testing" | ||
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"github.com/stretchr/testify/require" | ||
) | ||
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func captureStdout(f func()) (string, error) { | ||
old := os.Stdout | ||
r, w, err := os.Pipe() | ||
if err != nil { | ||
return "", err | ||
} | ||
os.Stdout = w | ||
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defer func() { | ||
os.Stdout = old | ||
}() | ||
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f() | ||
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w.Close() | ||
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var buf bytes.Buffer | ||
_, err = io.Copy(&buf, r) | ||
if err != nil { | ||
return "", err | ||
} | ||
return buf.String(), nil | ||
} | ||
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func TestCaptureStdout(t *testing.T) { | ||
output, err := captureStdout(func() { | ||
_, _ = os.Stdout.Write([]byte("test")) | ||
}) | ||
require.NoError(t, err) | ||
require.Equal(t, "test", output) | ||
} | ||
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func TestIsDebug(t *testing.T) { | ||
tests := []struct { | ||
name string | ||
envValue string | ||
expected bool | ||
}{ | ||
{ | ||
name: "HELM_DEBUG is true", | ||
envValue: "true", | ||
expected: true, | ||
}, | ||
{ | ||
name: "HELM_DEBUG is false", | ||
envValue: "false", | ||
expected: false, | ||
}, | ||
} | ||
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for _, tt := range tests { | ||
t.Run(tt.name, func(t *testing.T) { | ||
t.Setenv("HELM_DEBUG", tt.envValue) | ||
require.Equalf(t, tt.expected, isDebug(), "Expected %v but got %v", tt.expected, isDebug()) | ||
}) | ||
} | ||
} | ||
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func TestDebugPrint(t *testing.T) { | ||
tests := []struct { | ||
name string | ||
envValue string | ||
expected string | ||
}{ | ||
{ | ||
name: "non-empty when HELM_DEBUG is true", | ||
envValue: "true", | ||
expected: "test\n", | ||
}, | ||
{ | ||
name: "empty when HELM_DEBUG is false", | ||
envValue: "false", | ||
expected: "", | ||
}, | ||
} | ||
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for _, tt := range tests { | ||
t.Run(tt.name, func(t *testing.T) { | ||
t.Setenv("HELM_DEBUG", tt.envValue) | ||
output, err := captureStdout(func() { | ||
debugPrint("test") | ||
}) | ||
require.NoError(t, err) | ||
require.Equalf(t, tt.expected, output, "Expected %v but got %v", tt.expected, output) | ||
}) | ||
} | ||
} | ||
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func TestOutputWithRichError(t *testing.T) { | ||
tests := []struct { | ||
name string | ||
envValue string | ||
cmd *exec.Cmd | ||
expected string | ||
expectedStdout string | ||
}{ | ||
{ | ||
name: "debug output in stdout when HELM_DEBUG is true", | ||
envValue: "true", | ||
cmd: exec.Command("echo", "test1"), | ||
expected: "test1\n", | ||
expectedStdout: "Executing echo test1\n", | ||
}, | ||
{ | ||
name: "non-debug output in stdout when HELM_DEBUG is false", | ||
envValue: "false", | ||
cmd: exec.Command("echo", "test2"), | ||
expected: "test2\n", | ||
expectedStdout: "", | ||
}, | ||
} | ||
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for _, tt := range tests { | ||
t.Run(tt.name, func(t *testing.T) { | ||
t.Setenv("HELM_DEBUG", tt.envValue) | ||
var ( | ||
stdoutString string | ||
outBytes []byte | ||
funcErr, captureErr error | ||
) | ||
stdoutString, captureErr = captureStdout(func() { | ||
outBytes, funcErr = outputWithRichError(tt.cmd) | ||
}) | ||
require.NoError(t, captureErr) | ||
require.NoError(t, funcErr) | ||
require.Equalf(t, tt.expected, string(outBytes), "Expected %v but got %v", tt.expected, string(outBytes)) | ||
require.Equalf(t, tt.expectedStdout, stdoutString, "Expected %v but got %v", tt.expectedStdout, stdoutString) | ||
}) | ||
} | ||
} |