test: sweep example data in test files to RFC-5737 + placeholders

Mirrors the .md/.txt sweep across all tracked _test.go, testdata XML,
and .http integration files. Test files are self-contained (producer
+ assertion in the same file), so the matched-pair swap stays green
under `go test ./...`.

Mapping applied:
  192.168.178.[0-9]+   → 192.0.2.[same]
  192.168.1.[0-9]+     → 192.0.2.[same]
  Sound Machinechen    → Living Room SoundTouch
  A Sound Machine      → Kitchen SoundTouch
  A81B6A536A98 + case/separator variants → AABBCCDDEEFF (etc.)
  A81B6A849D99         → AABBCCDDEE01
  A81B6A849D88         → AABBCCDDEE03
  A81B6A536A09         → AABBCCDDEE04
  884AEAEEBD27         → AABBCCDDEE02
  3230304              → 1000001
  9569497              → 1000002

Two semantic fixes alongside the bulk swap:

- pkg/service/zeroconf/zeroconf_test.go: the "private 192" and
  "strips query" cases pin acceptance of RFC-1918 192.168/16. They
  must use a real 192.168 value; doc-range IPs would (correctly) be
  rejected by validateZcBaseURL. Switched to 192.168.10.10 — generic
  enough not to match any home LAN default, real enough for the
  validator. Added a comment explaining why this single test still
  carries a 192.168 literal.

- pkg/service/setup/setup_test.go: TestTestDNSRedirection mocks the
  device's `od -An -tu1` byte output, which is space-separated
  octets ("192 168 1 100"). My sed only matched the dot-separated
  form, so the mock was returning the old IP while the test
  assertions had moved to the doc range. Updated to " 192 0 2 100".

go build ./... clean. go test ./... clean (only TestDocsConsistency
remains failing, which is a pre-existing/untracked-file issue).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

cmd/soundtouch-cli/cmd_group_test.go

@@ -76,9 +76,9 @@ func TestPropagateAddGroup_BothSucceed(t *testing.T) {
 	leftClient := newTestGroupClient(leftSrv.URL)
 	rightClient := newTestGroupClient(rightSrv.URL)
 
-	req := sampleGroupRequest("192.168.1.131", "192.168.1.134")
+	req := sampleGroupRequest("192.0.2.131", "192.0.2.134")
 
-	leftOut, rightOut := propagateAddGroup(leftClient, rightClient, "192.168.1.131", "192.168.1.134", req)
+	leftOut, rightOut := propagateAddGroup(leftClient, rightClient, "192.0.2.131", "192.0.2.134", req)
 
 	if leftOut.err != nil {
 		t.Errorf("LEFT err = %v, want nil", leftOut.err)
@@ -117,8 +117,8 @@ func TestPropagateAddGroup_BothSucceed(t *testing.T) {
 	}
 
 	rightBody := (*rightBodies)[0]
-	if !strings.Contains(rightBody, "<senderIPAddress>192.168.1.131</senderIPAddress>") {
-		t.Errorf("RIGHT (slave) body must carry <senderIPAddress>192.168.1.131</senderIPAddress>\nbody:\n%s", rightBody)
+	if !strings.Contains(rightBody, "<senderIPAddress>192.0.2.131</senderIPAddress>") {
+		t.Errorf("RIGHT (slave) body must carry <senderIPAddress>192.0.2.131</senderIPAddress>\nbody:\n%s", rightBody)
 	}
 }
 
@@ -134,9 +134,9 @@ func TestPropagateAddGroup_RightFails(t *testing.T) {
 	leftClient := newTestGroupClient(leftSrv.URL)
 	rightClient := newTestGroupClient(rightSrv.URL)
 
-	req := sampleGroupRequest("192.168.1.131", "192.168.1.134")
+	req := sampleGroupRequest("192.0.2.131", "192.0.2.134")
 
-	leftOut, rightOut := propagateAddGroup(leftClient, rightClient, "192.168.1.131", "192.168.1.134", req)
+	leftOut, rightOut := propagateAddGroup(leftClient, rightClient, "192.0.2.131", "192.0.2.134", req)
 
 	if leftOut.err != nil {
 		t.Errorf("LEFT err = %v, want nil", leftOut.err)

cmd/soundtouch-cli/cmd_introspect_test.go

@@ -17,7 +17,7 @@ func TestIntrospectCommands(t *testing.T) {
 	}{
 		{
 			name: "introspect service with source flag",
-			args: []string{"soundtouch-cli", "--host", "192.168.1.100", "source", "introspect", "--source", "SPOTIFY"},
+			args: []string{"soundtouch-cli", "--host", "192.0.2.100", "source", "introspect", "--source", "SPOTIFY"},
 			expectedOutput: []string{
 				"Getting introspect data for SPOTIFY",
 				"=== SPOTIFY Service Introspect Data ===",
@@ -47,7 +47,7 @@ func TestIntrospectCommands(t *testing.T) {
 		},
 		{
 			name: "introspect spotify convenience command",
-			args: []string{"soundtouch-cli", "--host", "192.168.1.100", "source", "introspect-spotify"},
+			args: []string{"soundtouch-cli", "--host", "192.0.2.100", "source", "introspect-spotify"},
 			expectedOutput: []string{
 				"Getting Spotify introspect data",
 				"=== Spotify Service Introspect Data ===",
@@ -60,7 +60,7 @@ func TestIntrospectCommands(t *testing.T) {
 		},
 		{
 			name: "introspect with account parameter",
-			args: []string{"soundtouch-cli", "--host", "192.168.1.100", "source", "introspect", "--source", "SPOTIFY", "--account", "my_spotify_account"},
+			args: []string{"soundtouch-cli", "--host", "192.0.2.100", "source", "introspect", "--source", "SPOTIFY", "--account", "my_spotify_account"},
 			expectedOutput: []string{
 				"Getting introspect data for SPOTIFY",
 				"Source Account: my_spotify_account",
@@ -68,7 +68,7 @@ func TestIntrospectCommands(t *testing.T) {
 		},
 		{
 			name:        "introspect missing source flag",
-			args:        []string{"soundtouch-cli", "--host", "192.168.1.100", "source", "introspect"},
+			args:        []string{"soundtouch-cli", "--host", "192.0.2.100", "source", "introspect"},
 			expectError: true,
 		},
 		{

cmd/soundtouch-cli/cmd_recents_test.go

@@ -17,7 +17,7 @@ func TestRecentsCommands(t *testing.T) {
 	}{
 		{
 			name: "recents list command",
-			args: []string{"soundtouch-cli", "--host", "192.168.1.100", "recents", "list"},
+			args: []string{"soundtouch-cli", "--host", "192.0.2.100", "recents", "list"},
 			expectedOutput: []string{
 				"Getting recently played content",
 				"Recent Items Summary:",
@@ -26,7 +26,7 @@ func TestRecentsCommands(t *testing.T) {
 		},
 		{
 			name: "recents filter by source",
-			args: []string{"soundtouch-cli", "--host", "192.168.1.100", "recents", "filter", "--source", "SPOTIFY"},
+			args: []string{"soundtouch-cli", "--host", "192.0.2.100", "recents", "filter", "--source", "SPOTIFY"},
 			expectedOutput: []string{
 				"Getting filtered recent content",
 				"filtered by source: SPOTIFY",
@@ -34,7 +34,7 @@ func TestRecentsCommands(t *testing.T) {
 		},
 		{
 			name: "recents latest command",
-			args: []string{"soundtouch-cli", "--host", "192.168.1.100", "recents", "latest"},
+			args: []string{"soundtouch-cli", "--host", "192.0.2.100", "recents", "latest"},
 			expectedOutput: []string{
 				"Getting most recent item",
 				"Most Recent Item:",
@@ -42,7 +42,7 @@ func TestRecentsCommands(t *testing.T) {
 		},
 		{
 			name: "recents stats command",
-			args: []string{"soundtouch-cli", "--host", "192.168.1.100", "recents", "stats"},
+			args: []string{"soundtouch-cli", "--host", "192.0.2.100", "recents", "stats"},
 			expectedOutput: []string{
 				"Getting recent items statistics",
 				"Recent Items Statistics",

cmd/soundtouch-cli/cmd_setup_test.go

@@ -169,7 +169,7 @@ func TestBuildPlanSteps_NoOpWhenAlreadyMigratedAndPaired(t *testing.T) {
 	summary := &setup.MigrationSummary{IsMigrated: true, IsPaired: true, TelnetMigrated: true}
 	inspect := &setup.InspectReport{Info: &setup.DeviceInfoXML{DeviceID: "AABBCCDDEEFF"}}
 
-	steps := buildPlanSteps("192.168.1.42", "http://aftertouch.local:8000", "", true, false, inspect, summary)
+	steps := buildPlanSteps("192.0.2.42", "http://aftertouch.local:8000", "", true, false, inspect, summary)
 
 	if len(steps) != 0 {
 		t.Errorf("expected no steps for fully-set-up device, got %d:\n%v", len(steps), steps)
@@ -180,7 +180,7 @@ func TestBuildPlanSteps_RecommendsPairWhenMigratedButUnpaired(t *testing.T) {
 	summary := &setup.MigrationSummary{IsMigrated: true, IsPaired: false, TelnetMigrated: true, TelnetReachable: true}
 	inspect := &setup.InspectReport{Info: &setup.DeviceInfoXML{DeviceID: "AABBCCDDEEFF"}}
 
-	steps := buildPlanSteps("192.168.1.42", "http://aftertouch.local:8000", "", true, false, inspect, summary)
+	steps := buildPlanSteps("192.0.2.42", "http://aftertouch.local:8000", "", true, false, inspect, summary)
 
 	if len(steps) != 1 {
 		t.Fatalf("expected exactly the pair step, got %d:\n%v", len(steps), steps)
@@ -195,7 +195,7 @@ func TestBuildPlanSteps_MigrateRebootThenPairWhenFresh(t *testing.T) {
 	summary := &setup.MigrationSummary{TelnetReachable: true, SSHSuccess: false, IsPaired: false}
 	inspect := &setup.InspectReport{Info: &setup.DeviceInfoXML{DeviceID: "AABBCCDDEEFF"}}
 
-	steps := buildPlanSteps("192.168.1.42", "http://aftertouch.local:8000", "", true, false, inspect, summary)
+	steps := buildPlanSteps("192.0.2.42", "http://aftertouch.local:8000", "", true, false, inspect, summary)
 
 	// migrate → reboot → pair. The reboot step exists because envswitch's
 	// parallel-persistence layer only fully wins on the next boot, and we
@@ -228,7 +228,7 @@ func TestBuildPlanSteps_DNSMethodPrependsCAInstall(t *testing.T) {
 	}
 	inspect := &setup.InspectReport{Info: &setup.DeviceInfoXML{DeviceID: "X"}}
 
-	steps := buildPlanSteps("192.168.1.42", "http://aftertouch.local:8000", "", false, false, inspect, summary)
+	steps := buildPlanSteps("192.0.2.42", "http://aftertouch.local:8000", "", false, false, inspect, summary)
 
 	if len(steps) < 2 {
 		t.Fatalf("expected at least install-ca + migrate, got %d steps:\n%v", len(steps), steps)
@@ -256,7 +256,7 @@ func TestBuildPlanSteps_ResetModeIncludesManualNetworkSwitches(t *testing.T) {
 	}
 	summary := &setup.MigrationSummary{IsMigrated: true, IsPaired: true} // doesn't matter in reset mode
 
-	steps := buildPlanSteps("192.168.1.42", "http://aftertouch.local:8000", "", true, true, inspect, summary)
+	steps := buildPlanSteps("192.0.2.42", "http://aftertouch.local:8000", "", true, true, inspect, summary)
 
 	// Expected sequence in --reset mode:
 	//   factory-reset, manual AP switch, wait-ap, wifi-push, manual home switch,

cmd/soundtouch-cli/main_test.go

@@ -14,16 +14,16 @@ func TestParseHostPort(t *testing.T) {
 	}{
 		{
 			name:        "IPv4 with port",
-			input:       "192.168.1.10:8090",
+			input:       "192.0.2.10:8090",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8090,
 		},
 		{
 			name:        "IPv4 without port",
-			input:       "192.168.1.10",
+			input:       "192.0.2.10",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8080,
 		},
 		{
@@ -63,30 +63,30 @@ func TestParseHostPort(t *testing.T) {
 		},
 		{
 			name:        "invalid port - non-numeric",
-			input:       "192.168.1.10:abc",
+			input:       "192.0.2.10:abc",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8080,
 		},
 		{
 			name:        "invalid port - too high",
-			input:       "192.168.1.10:99999",
+			input:       "192.0.2.10:99999",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8080,
 		},
 		{
 			name:        "invalid port - zero",
-			input:       "192.168.1.10:0",
+			input:       "192.0.2.10:0",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8080,
 		},
 		{
 			name:        "invalid port - negative",
-			input:       "192.168.1.10:-123",
+			input:       "192.0.2.10:-123",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8080,
 		},
 		{
@@ -105,37 +105,37 @@ func TestParseHostPort(t *testing.T) {
 		},
 		{
 			name:        "multiple colons - malformed",
-			input:       "192.168.1.100:8090:extra",
+			input:       "192.0.2.100:8090:extra",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.100:8090:extra",
+			wantHost:    "192.0.2.100:8090:extra",
 			wantPort:    8080,
 		},
 		{
 			name:        "standard SoundTouch default",
-			input:       "192.168.1.10",
+			input:       "192.0.2.10",
 			defaultPort: 8090,
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8090,
 		},
 		{
 			name:        "valid high port",
-			input:       "192.168.1.100:65535",
+			input:       "192.0.2.100:65535",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.100",
+			wantHost:    "192.0.2.100",
 			wantPort:    65535,
 		},
 		{
 			name:        "valid low port",
-			input:       "192.168.1.100:1",
+			input:       "192.0.2.100:1",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.100",
+			wantHost:    "192.0.2.100",
 			wantPort:    1,
 		},
 		{
 			name:        "real SoundTouch device example",
-			input:       "192.168.1.10:8090",
+			input:       "192.0.2.10:8090",
 			defaultPort: 8080,
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8090,
 		},
 		{
@@ -166,8 +166,8 @@ func BenchmarkParseHostPort(b *testing.B) {
 		name  string
 		input string
 	}{
-		{"with_port", "192.168.1.100:8090"},
-		{"without_port", "192.168.1.100"},
+		{"with_port", "192.0.2.100:8090"},
+		{"without_port", "192.0.2.100"},
 		{"hostname_with_port", "soundtouch.local:8090"},
 		{"ipv6_with_port", "[::1]:8090"},
 	}
@@ -193,26 +193,26 @@ func TestParseHostPortSoundTouchScenarios(t *testing.T) {
 	}{
 		{
 			name:        "typical_cli_usage",
-			input:       "192.168.1.10:8091",
+			input:       "192.0.2.10:8091",
 			defaultPort: 8090,
 			description: "User specifies full host:port",
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8091,
 		},
 		{
 			name:        "discovery_result_host_only",
-			input:       "192.168.1.10",
+			input:       "192.0.2.10",
 			defaultPort: 8090,
 			description: "Discovery returns IP, CLI uses default port",
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8090,
 		},
 		{
 			name:        "custom_port_override",
-			input:       "192.168.1.100:9000",
+			input:       "192.0.2.100:9000",
 			defaultPort: 8090,
 			description: "User overrides default SoundTouch port",
-			wantHost:    "192.168.1.100",
+			wantHost:    "192.0.2.100",
 			wantPort:    9000,
 		},
 		{
@@ -225,10 +225,10 @@ func TestParseHostPortSoundTouchScenarios(t *testing.T) {
 		},
 		{
 			name:        "invalid_port_fallback",
-			input:       "192.168.1.10:invalid",
+			input:       "192.0.2.10:invalid",
 			defaultPort: 8090,
 			description: "Malformed port should fallback to default",
-			wantHost:    "192.168.1.10",
+			wantHost:    "192.0.2.10",
 			wantPort:    8090,
 		},
 	}

cmd/soundtouch-service/router_test.go

@@ -132,10 +132,10 @@ func TestPUTRenameRoutesToLocalHandler(t *testing.T) {
 	ts := httptest.NewServer(r)
 	defer ts.Close()
 
-	body := `<?xml version="1.0" encoding="UTF-8" ?><device deviceid="A81B6A536A98"><name>Sound Machinechen</name><macaddress>A81B6A536A98</macaddress></device>`
+	body := `<?xml version="1.0" encoding="UTF-8" ?><device deviceid="AABBCCDDEEFF"><name>Living Room SoundTouch</name><macaddress>AABBCCDDEEFF</macaddress></device>`
 
 	req, err := http.NewRequest(http.MethodPut,
-		ts.URL+"/streaming/account/1111111/device/A81B6A536A98",
+		ts.URL+"/streaming/account/1111111/device/AABBCCDDEEFF",
 		strings.NewReader(body))
 	if err != nil {
 		t.Fatalf("build request: %v", err)

cmd/soundtouch-web/handlers/handlers_test.go

@@ -24,7 +24,7 @@ func createTestApp() *WebApp {
 		Name: "Test Speaker",
 		Type: "SoundTouch 30",
 		NetworkInfo: []models.NetworkInfo{
-			{MacAddress: "TEST123", IPAddress: "192.168.1.100"},
+			{MacAddress: "TEST123", IPAddress: "192.0.2.100"},
 		},
 	}
 

cmd/soundtouch-web/resolve_bind_addr_test.go

@@ -14,7 +14,7 @@ func TestResolveBindAddr_PassThrough(t *testing.T) {
 		"",
 		"localhost",
 		"127.0.0.1",
-		"192.168.1.5",
+		"192.0.2.5",
 		"::1",
 		"definitely-not-an-iface-xyz",
 	}
@@ -102,21 +102,21 @@ func TestDefaultDiscoveryInterface(t *testing.T) {
 			name:         "explicit interface wins over bind-derived default",
 			rawInterface: "eth1",
 			rawBind:      "eth0",
-			resolvedBind: "192.168.1.5",
+			resolvedBind: "192.0.2.5",
 			want:         "eth1",
 		},
 		{
 			name:         "derive from --bind when --bind was an interface name",
 			rawInterface: "",
 			rawBind:      "eth0",
-			resolvedBind: "192.168.1.5",
+			resolvedBind: "192.0.2.5",
 			want:         "eth0",
 		},
 		{
 			name:         "no derivation when --bind was an IP literal",
 			rawInterface: "",
-			rawBind:      "192.168.1.5",
-			resolvedBind: "192.168.1.5",
+			rawBind:      "192.0.2.5",
+			resolvedBind: "192.0.2.5",
 			want:         "",
 		},
 		{

cmd/soundtouch-web/webtypes/types_test.go

@@ -128,7 +128,7 @@ func TestDeviceConnection(t *testing.T) {
 		Name: "Test Speaker",
 		Type: "SoundTouch 30",
 		NetworkInfo: []models.NetworkInfo{
-			{MacAddress: "TEST123", IPAddress: "192.168.1.100"},
+			{MacAddress: "TEST123", IPAddress: "192.0.2.100"},
 		},
 	}