feat: use postgres

2026-04-26 20:34:39 +02:00
parent 48b0056b49
commit fe829285a6
365 changed files with 29223 additions and 24049 deletions
@@ -0,0 +1,198 @@
+package postgres
+
+import (
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestDefaultConfigReturnsExpectedTuning(t *testing.T) {
+	t.Parallel()
+
+	cfg := DefaultConfig()
+	if cfg.OperationTimeout != DefaultOperationTimeout {
+		t.Fatalf("operation timeout = %v, want %v", cfg.OperationTimeout, DefaultOperationTimeout)
+	}
+	if cfg.MaxOpenConns != DefaultMaxOpenConns {
+		t.Fatalf("max open conns = %d, want %d", cfg.MaxOpenConns, DefaultMaxOpenConns)
+	}
+	if cfg.MaxIdleConns != DefaultMaxIdleConns {
+		t.Fatalf("max idle conns = %d, want %d", cfg.MaxIdleConns, DefaultMaxIdleConns)
+	}
+	if cfg.ConnMaxLifetime != DefaultConnMaxLifetime {
+		t.Fatalf("conn max lifetime = %v, want %v", cfg.ConnMaxLifetime, DefaultConnMaxLifetime)
+	}
+}
+
+func TestConfigValidateAcceptsHappyPath(t *testing.T) {
+	t.Parallel()
+
+	cfg := DefaultConfig()
+	cfg.PrimaryDSN = "postgres://localhost:5432/galaxy?sslmode=disable"
+	if err := cfg.Validate(); err != nil {
+		t.Fatalf("validate happy path: %v", err)
+	}
+}
+
+func TestConfigValidateRejectsInvalidValues(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name    string
+		mutate  func(*Config)
+		wantSub string
+	}{
+		{
+			name: "missing primary",
+			mutate: func(c *Config) {
+				c.PrimaryDSN = ""
+			},
+			wantSub: "primary DSN",
+		},
+		{
+			name: "blank replica entry",
+			mutate: func(c *Config) {
+				c.ReplicaDSNs = []string{"postgres://a", "   "}
+			},
+			wantSub: "replica DSN",
+		},
+		{
+			name: "non-positive timeout",
+			mutate: func(c *Config) {
+				c.OperationTimeout = 0
+			},
+			wantSub: "operation timeout",
+		},
+		{
+			name: "non-positive max open",
+			mutate: func(c *Config) {
+				c.MaxOpenConns = 0
+			},
+			wantSub: "max open conns",
+		},
+		{
+			name: "negative max idle",
+			mutate: func(c *Config) {
+				c.MaxIdleConns = -1
+			},
+			wantSub: "max idle conns must not be negative",
+		},
+		{
+			name: "max idle exceeds open",
+			mutate: func(c *Config) {
+				c.MaxOpenConns = 4
+				c.MaxIdleConns = 5
+			},
+			wantSub: "must not exceed",
+		},
+		{
+			name: "non-positive lifetime",
+			mutate: func(c *Config) {
+				c.ConnMaxLifetime = 0
+			},
+			wantSub: "conn max lifetime",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			cfg := DefaultConfig()
+			cfg.PrimaryDSN = "postgres://localhost"
+			tt.mutate(&cfg)
+
+			err := cfg.Validate()
+			if err == nil {
+				t.Fatalf("expected validate error, got nil")
+			}
+			if !strings.Contains(err.Error(), tt.wantSub) {
+				t.Fatalf("error %q does not contain %q", err, tt.wantSub)
+			}
+		})
+	}
+}
+
+func TestLoadFromEnvUsesDefaultsWhenOnlyPrimarySet(t *testing.T) {
+	const prefix = "TESTSVC"
+	t.Setenv(prefix+"_POSTGRES_PRIMARY_DSN", "postgres://example/galaxy?sslmode=disable")
+
+	cfg, err := LoadFromEnv(prefix)
+	if err != nil {
+		t.Fatalf("load from env: %v", err)
+	}
+	if cfg.PrimaryDSN != "postgres://example/galaxy?sslmode=disable" {
+		t.Fatalf("primary DSN = %q", cfg.PrimaryDSN)
+	}
+	if len(cfg.ReplicaDSNs) != 0 {
+		t.Fatalf("replica DSNs = %v, want empty", cfg.ReplicaDSNs)
+	}
+	if cfg.OperationTimeout != DefaultOperationTimeout {
+		t.Fatalf("operation timeout = %v", cfg.OperationTimeout)
+	}
+	if cfg.MaxOpenConns != DefaultMaxOpenConns {
+		t.Fatalf("max open conns = %d", cfg.MaxOpenConns)
+	}
+}
+
+func TestLoadFromEnvParsesAllOverrides(t *testing.T) {
+	const prefix = "TESTSVC"
+	t.Setenv(prefix+"_POSTGRES_PRIMARY_DSN", "postgres://example/galaxy?sslmode=disable")
+	t.Setenv(prefix+"_POSTGRES_REPLICA_DSNS", "postgres://r1, postgres://r2 ,")
+	t.Setenv(prefix+"_POSTGRES_OPERATION_TIMEOUT", "750ms")
+	t.Setenv(prefix+"_POSTGRES_MAX_OPEN_CONNS", "40")
+	t.Setenv(prefix+"_POSTGRES_MAX_IDLE_CONNS", "10")
+	t.Setenv(prefix+"_POSTGRES_CONN_MAX_LIFETIME", "15m")
+
+	cfg, err := LoadFromEnv(prefix)
+	if err != nil {
+		t.Fatalf("load from env: %v", err)
+	}
+	if got, want := cfg.OperationTimeout, 750*time.Millisecond; got != want {
+		t.Fatalf("operation timeout = %v, want %v", got, want)
+	}
+	if got, want := cfg.MaxOpenConns, 40; got != want {
+		t.Fatalf("max open conns = %d, want %d", got, want)
+	}
+	if got, want := cfg.MaxIdleConns, 10; got != want {
+		t.Fatalf("max idle conns = %d, want %d", got, want)
+	}
+	if got, want := cfg.ConnMaxLifetime, 15*time.Minute; got != want {
+		t.Fatalf("conn max lifetime = %v, want %v", got, want)
+	}
+	if got, want := len(cfg.ReplicaDSNs), 2; got != want {
+		t.Fatalf("replica DSN count = %d, want %d", got, want)
+	}
+	if cfg.ReplicaDSNs[0] != "postgres://r1" || cfg.ReplicaDSNs[1] != "postgres://r2" {
+		t.Fatalf("replica DSNs = %v", cfg.ReplicaDSNs)
+	}
+}
+
+func TestLoadFromEnvFailsWhenPrimaryMissing(t *testing.T) {
+	const prefix = "TESTSVC"
+	t.Setenv(prefix+"_POSTGRES_PRIMARY_DSN", "")
+
+	if _, err := LoadFromEnv(prefix); err == nil {
+		t.Fatal("expected error when primary DSN missing")
+	}
+}
+
+func TestLoadFromEnvRejectsEmptyPrefix(t *testing.T) {
+	t.Parallel()
+
+	if _, err := LoadFromEnv("   "); err == nil {
+		t.Fatal("expected error on empty prefix")
+	}
+}
+
+func TestLoadFromEnvSurfacesDurationParseErrors(t *testing.T) {
+	const prefix = "TESTSVC"
+	t.Setenv(prefix+"_POSTGRES_PRIMARY_DSN", "postgres://example/galaxy")
+	t.Setenv(prefix+"_POSTGRES_OPERATION_TIMEOUT", "not-a-duration")
+
+	if _, err := LoadFromEnv(prefix); err == nil {
+		t.Fatal("expected parse error")
+	} else if !strings.Contains(err.Error(), "OPERATION_TIMEOUT") {
+		t.Fatalf("error %q should name the env var", err)
+	}
+}