0486dcfd07
- Extract DNSClient interface from resolver to allow dependency injection - Convert all resolver methods from package-level to receiver methods using the injectable DNS client - Rewrite resolver_test.go with a mock DNS client that simulates the full delegation chain (root → TLD → authoritative) in-process - Move 2 integration tests (real DNS) behind //go:build integration tag - Add NewFromLoggerWithClient constructor for test injection - Add LookupAllRecords implementation (was returning ErrNotImplemented) All unit tests are hermetic (no network) and complete in <1s. Total make check passes in ~5s. Closes #12
86 lines
1.6 KiB
Go
86 lines
1.6 KiB
Go
//go:build integration
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package resolver_test
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import (
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"context"
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"log/slog"
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"os"
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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"sneak.berlin/go/dnswatcher/internal/resolver"
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)
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// Integration tests hit real DNS servers. Run with:
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// go test -tags integration -timeout 60s ./internal/resolver/
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func newIntegrationResolver(t *testing.T) *resolver.Resolver {
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t.Helper()
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log := slog.New(slog.NewTextHandler(
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os.Stderr,
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&slog.HandlerOptions{Level: slog.LevelDebug},
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))
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return resolver.NewFromLogger(log)
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}
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func TestIntegration_FindAuthoritativeNameservers(
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t *testing.T,
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) {
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t.Parallel()
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r := newIntegrationResolver(t)
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ctx, cancel := context.WithTimeout(
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context.Background(), 30*time.Second,
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)
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defer cancel()
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nameservers, err := r.FindAuthoritativeNameservers(
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ctx, "example.com",
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)
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require.NoError(t, err)
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require.NotEmpty(t, nameservers)
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t.Logf("example.com NS: %v", nameservers)
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}
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func TestIntegration_ResolveIPAddresses(t *testing.T) {
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t.Parallel()
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r := newIntegrationResolver(t)
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ctx, cancel := context.WithTimeout(
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context.Background(), 30*time.Second,
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)
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defer cancel()
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// sneak.cloud is on Cloudflare
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nameservers, err := r.FindAuthoritativeNameservers(
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ctx, "sneak.cloud",
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)
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require.NoError(t, err)
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require.NotEmpty(t, nameservers)
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hasCloudflare := false
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for _, ns := range nameservers {
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if strings.Contains(ns, "cloudflare") {
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hasCloudflare = true
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break
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}
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}
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assert.True(t, hasCloudflare,
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"sneak.cloud should be on Cloudflare, got: %v",
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nameservers,
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)
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}
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