107 lines
2.8 KiB
Go
107 lines
2.8 KiB
Go
package compressutil
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import (
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"bytes"
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"compress/gzip"
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"testing"
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)
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func TestCompressUtil_CompressDecompress(t *testing.T) {
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t.Parallel()
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tests := []struct {
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compressionType string
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compressionConfig CompressionConfig
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canary byte
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}{
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{
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"GZIP default implicit",
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CompressionConfig{Type: CompressionTypeGzip},
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CompressionCanaryGzip,
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},
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{
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"GZIP default explicit",
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CompressionConfig{Type: CompressionTypeGzip, GzipCompressionLevel: gzip.DefaultCompression},
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CompressionCanaryGzip,
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},
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{
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"GZIP best speed",
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CompressionConfig{Type: CompressionTypeGzip, GzipCompressionLevel: gzip.BestSpeed},
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CompressionCanaryGzip,
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},
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{
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"GZIP best compression",
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CompressionConfig{Type: CompressionTypeGzip, GzipCompressionLevel: gzip.BestCompression},
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CompressionCanaryGzip,
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},
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{
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"Snappy",
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CompressionConfig{Type: CompressionTypeSnappy},
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CompressionCanarySnappy,
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},
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{
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"LZ4",
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CompressionConfig{Type: CompressionTypeLZ4},
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CompressionCanaryLZ4,
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},
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{
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"LZW",
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CompressionConfig{Type: CompressionTypeLZW},
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CompressionCanaryLZW,
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},
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}
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inputJSONBytes := []byte(`{"sample":"data","verification":"process"}`)
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for _, test := range tests {
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// Compress the input
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compressedJSONBytes, err := Compress(inputJSONBytes, &test.compressionConfig)
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if err != nil {
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t.Fatalf("compress error (%s): %s", test.compressionType, err)
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}
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if len(compressedJSONBytes) == 0 {
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t.Fatalf("failed to compress data in %s format", test.compressionType)
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}
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// Check the presence of the canary
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if compressedJSONBytes[0] != test.canary {
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t.Fatalf("bad (%s): compression canary: expected: %d actual: %d", test.compressionType, test.canary, compressedJSONBytes[0])
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}
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decompressedJSONBytes, wasNotCompressed, err := Decompress(compressedJSONBytes)
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if err != nil {
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t.Fatalf("decompress error (%s): %s", test.compressionType, err)
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}
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// Check if the input for decompress was not compressed in the first place
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if wasNotCompressed {
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t.Fatalf("bad (%s): expected compressed bytes", test.compressionType)
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}
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if len(decompressedJSONBytes) == 0 {
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t.Fatalf("bad (%s): expected decompressed bytes", test.compressionType)
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}
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// Compare the value after decompression
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if !bytes.Equal(inputJSONBytes, decompressedJSONBytes) {
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t.Fatalf("bad (%s): decompressed value;\nexpected: %q\nactual: %q", test.compressionType, string(inputJSONBytes), string(decompressedJSONBytes))
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}
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}
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}
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func TestCompressUtil_InvalidConfigurations(t *testing.T) {
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t.Parallel()
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inputJSONBytes := []byte(`{"sample":"data","verification":"process"}`)
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// Test nil configuration
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if _, err := Compress(inputJSONBytes, nil); err == nil {
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t.Fatal("expected an error")
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}
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// Test invalid configuration
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if _, err := Compress(inputJSONBytes, &CompressionConfig{}); err == nil {
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t.Fatal("expected an error")
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}
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}
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