eSliderandCursor
d44b56848b
Codify the article's nested Config scenario to verify YAML base values are overridden by dotenv and finally by process environment variables. Co-authored-by: Cursor <cursoragent@cursor.com>
59 lines
1.2 KiB
Go
59 lines
1.2 KiB
Go
package config_test
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import (
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"testing"
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"github.com/eslider/go-config/env"
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"github.com/eslider/go-config/yaml"
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)
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type motivationConfig struct {
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HTTP struct {
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Listen string `mapstructure:"listen"`
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TLS bool `mapstructure:"tls"`
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} `mapstructure:"http"`
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Database struct {
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URL string `mapstructure:"url"`
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} `mapstructure:"database"`
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}
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func TestMotivationConfig_YAMLThenEnvThenProcessEnv(t *testing.T) {
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t.Setenv("HTTP_LISTEN", ":10000")
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t.Setenv("HTTP_TLS", "true")
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t.Setenv("DATABASE_URL", "postgres://process-env")
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yamlCfg := yaml.New(yaml.WithBytes([]byte(`
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http:
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listen: ":8080"
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tls: false
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database:
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url: "postgres://yaml"
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`)))
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envCfg := env.New(
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env.WithBytes([]byte(`
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HTTP_LISTEN=:9090
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DATABASE_URL=postgres://dotenv
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`)),
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env.WithCurrentEnvironment(),
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)
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var cfg motivationConfig
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if err := yamlCfg.Unmarshal(&cfg); err != nil {
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t.Fatalf("yaml unmarshal: %v", err)
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}
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if err := envCfg.Unmarshal(&cfg); err != nil {
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t.Fatalf("env unmarshal: %v", err)
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}
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if cfg.HTTP.Listen != ":10000" {
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t.Fatalf("HTTP.Listen=%q", cfg.HTTP.Listen)
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}
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if !cfg.HTTP.TLS {
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t.Fatalf("HTTP.TLS=%v", cfg.HTTP.TLS)
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}
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if cfg.Database.URL != "postgres://process-env" {
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t.Fatalf("Database.URL=%q", cfg.Database.URL)
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}
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}
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