package diff import (	"testing" 	"github.com/router-for-me/CLIProxyAPI/v7/internal/config"	"github.com/router-for-me/CLIProxyAPI/v7/internal/registry") func TestComputeOpenAICompatModelsHash_Deterministic(t *testing.T) {	models := []config.OpenAICompatibilityModel{		{Name: "gpt-4", Alias: "gpt4"},		{Name: "gpt-3.5-turbo"},	}	hash1 := ComputeOpenAICompatModelsHash(models)	hash2 := ComputeOpenAICompatModelsHash(models)	if hash1 == "" {		t.Fatal("hash should not be empty")	}	if hash1 != hash2 {		t.Fatalf("hash should be deterministic, got %s vs %s", hash1, hash2)	}	changed := ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: "gpt-4"}, {Name: "gpt-4.1"}})	if hash1 == changed {		t.Fatal("hash should change when model list changes")	}} func TestComputeOpenAICompatModelsHash_IncludesImageFlag(t *testing.T) {	textModel := ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: "gpt-image", Alias: "image"}})	imageModel := ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: "gpt-image", Alias: "image", Image: true}})	if textModel == "" || imageModel == "" {		t.Fatal("hashes should not be empty")	}	if textModel == imageModel {		t.Fatal("hash should change when image flag changes")	}} func TestComputeOpenAICompatModelsHashIncludesModalities(t *testing.T) {	base := []config.OpenAICompatibilityModel{{Name: "model", InputModalities: []string{"text"}, OutputModalities: []string{"text"}}}	inputChanged := []config.OpenAICompatibilityModel{{Name: "model", InputModalities: []string{"text", "image"}, OutputModalities: []string{"text"}}}	outputChanged := []config.OpenAICompatibilityModel{{Name: "model", InputModalities: []string{"text"}, OutputModalities: []string{"text", "image"}}}	baseHash := ComputeOpenAICompatModelsHash(base)	if baseHash == ComputeOpenAICompatModelsHash(inputChanged) {		t.Fatal("input modalities did not change model hash")	}	if baseHash == ComputeOpenAICompatModelsHash(outputChanged) {		t.Fatal("output modalities did not change model hash")	}} func TestComputeOpenAICompatModelsHashPreservesRoutingOrderAndDuplicates(t *testing.T) {	a := []config.OpenAICompatibilityModel{		{Name: "gpt-4", Alias: "gpt4"},		{Name: " "},		{Name: "GPT-4", Alias: "GPT4"},		{Alias: "a1"},	}	b := []config.OpenAICompatibilityModel{		{Alias: "A1"},		{Name: "gpt-4", Alias: "gpt4"},	}	h1 := ComputeOpenAICompatModelsHash(a)	h2 := ComputeOpenAICompatModelsHash(b)	if h1 == "" || h2 == "" {		t.Fatal("expected non-empty hashes for non-empty model sets")	}	if h1 == h2 {		t.Fatalf("expected routing order and duplicates to change hashes, got %s", h1)	}} func TestComputeVertexCompatModelsHash_DifferentInputs(t *testing.T) {	models := []config.VertexCompatModel{{Name: "gemini-pro", Alias: "pro"}}	hash1 := ComputeVertexCompatModelsHash(models)	hash2 := ComputeVertexCompatModelsHash([]config.VertexCompatModel{{Name: "gemini-1.5-pro", Alias: "pro"}})	if hash1 == "" || hash2 == "" {		t.Fatal("hashes should not be empty for non-empty models")	}	if hash1 == hash2 {		t.Fatal("hash should differ when model content differs")	}} func TestComputeVertexCompatModelsHashPreservesDuplicates(t *testing.T) {	a := []config.VertexCompatModel{		{Name: "m1", Alias: "a1"},		{Name: " "},		{Name: "M1", Alias: "A1"},	}	b := []config.VertexCompatModel{		{Name: "m1", Alias: "a1"},	}	if h1, h2 := ComputeVertexCompatModelsHash(a), ComputeVertexCompatModelsHash(b); h1 == "" || h1 == h2 {		t.Fatalf("expected duplicate routing entries to change hash, got %q / %q", h1, h2)	}} func TestComputeClaudeModelsHash_Empty(t *testing.T) {	if got := ComputeClaudeModelsHash(nil); got != "" {		t.Fatalf("expected empty hash for nil models, got %q", got)	}	if got := ComputeClaudeModelsHash([]config.ClaudeModel{}); got != "" {		t.Fatalf("expected empty hash for empty slice, got %q", got)	}} func TestComputeCodexModelsHash_Empty(t *testing.T) {	if got := ComputeCodexModelsHash(nil); got != "" {		t.Fatalf("expected empty hash for nil models, got %q", got)	}	if got := ComputeCodexModelsHash([]config.CodexModel{}); got != "" {		t.Fatalf("expected empty hash for empty slice, got %q", got)	}} func TestComputeClaudeModelsHashPreservesDuplicates(t *testing.T) {	a := []config.ClaudeModel{		{Name: "m1", Alias: "a1"},		{Name: " "},		{Name: "M1", Alias: "A1"},	}	b := []config.ClaudeModel{		{Name: "m1", Alias: "a1"},	}	if h1, h2 := ComputeClaudeModelsHash(a), ComputeClaudeModelsHash(b); h1 == "" || h1 == h2 {		t.Fatalf("expected duplicate routing entries to change hash, got %q / %q", h1, h2)	}} func TestComputeCodexModelsHashPreservesDuplicates(t *testing.T) {	a := []config.CodexModel{		{Name: "m1", Alias: "a1"},		{Name: " "},		{Name: "M1", Alias: "A1"},	}	b := []config.CodexModel{		{Name: "m1", Alias: "a1"},	}	if h1, h2 := ComputeCodexModelsHash(a), ComputeCodexModelsHash(b); h1 == "" || h1 == h2 {		t.Fatalf("expected duplicate routing entries to change hash, got %q / %q", h1, h2)	}} func TestComputeModelHashesIncludeDisplayName(t *testing.T) {	tests := []struct {		name    string		base    string		changed string	}{		{			name:    "openai compatibility",			base:    ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: "m", Alias: "a", DisplayName: "One"}}),			changed: ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: "m", Alias: "a", DisplayName: "Two"}}),		},		{			name:    "vertex",			base:    ComputeVertexCompatModelsHash([]config.VertexCompatModel{{Name: "m", Alias: "a", DisplayName: "One"}}),			changed: ComputeVertexCompatModelsHash([]config.VertexCompatModel{{Name: "m", Alias: "a", DisplayName: "Two"}}),		},		{			name:    "claude",			base:    ComputeClaudeModelsHash([]config.ClaudeModel{{Name: "m", Alias: "a", DisplayName: "One"}}),			changed: ComputeClaudeModelsHash([]config.ClaudeModel{{Name: "m", Alias: "a", DisplayName: "Two"}}),		},		{			name:    "codex",			base:    ComputeCodexModelsHash([]config.CodexModel{{Name: "m", Alias: "a", DisplayName: "One"}}),			changed: ComputeCodexModelsHash([]config.CodexModel{{Name: "m", Alias: "a", DisplayName: "Two"}}),		},		{			name:    "gemini",			base:    ComputeGeminiModelsHash([]config.GeminiModel{{Name: "m", Alias: "a", DisplayName: "One"}}),			changed: ComputeGeminiModelsHash([]config.GeminiModel{{Name: "m", Alias: "a", DisplayName: "Two"}}),		},	} 	for _, tt := range tests {		t.Run(tt.name, func(t *testing.T) {			if tt.base == "" || tt.base == tt.changed {				t.Fatalf("display name must change model hash: %q / %q", tt.base, tt.changed)			}		})	}} func TestComputeCodexModelsHashIncludesForceMapping(t *testing.T) {	withoutForceMapping := ComputeCodexModelsHash([]config.CodexModel{{Name: "m", Alias: "a"}})	withForceMapping := ComputeCodexModelsHash([]config.CodexModel{{Name: "m", Alias: "a", ForceMapping: true}})	if withoutForceMapping == "" || withoutForceMapping == withForceMapping {		t.Fatalf("force-mapping must change model hash: %q / %q", withoutForceMapping, withForceMapping)	}} func TestComputeOtherModelHashesIncludeForceMapping(t *testing.T) {	if ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: "m"}}) == ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: "m", ForceMapping: true}}) {		t.Fatal("OpenAI compatibility force-mapping did not change model hash")	}	if ComputeVertexCompatModelsHash([]config.VertexCompatModel{{Name: "m"}}) == ComputeVertexCompatModelsHash([]config.VertexCompatModel{{Name: "m", ForceMapping: true}}) {		t.Fatal("Vertex force-mapping did not change model hash")	}	if ComputeClaudeModelsHash([]config.ClaudeModel{{Name: "m"}}) == ComputeClaudeModelsHash([]config.ClaudeModel{{Name: "m", ForceMapping: true}}) {		t.Fatal("Claude force-mapping did not change model hash")	}	if ComputeGeminiModelsHash([]config.GeminiModel{{Name: "m"}}) == ComputeGeminiModelsHash([]config.GeminiModel{{Name: "m", ForceMapping: true}}) {		t.Fatal("Gemini force-mapping did not change model hash")	}} func TestComputeExcludedModelsHash_Normalizes(t *testing.T) {	hash1 := ComputeExcludedModelsHash([]string{" A ", "b", "a"})	hash2 := ComputeExcludedModelsHash([]string{"a", " b", "A"})	if hash1 == "" || hash2 == "" {		t.Fatal("hash should not be empty for non-empty input")	}	if hash1 != hash2 {		t.Fatalf("hash should be order/space insensitive for same multiset, got %s vs %s", hash1, hash2)	}	hash3 := ComputeExcludedModelsHash([]string{"c"})	if hash1 == hash3 {		t.Fatal("hash should differ for different normalized sets")	}} func TestComputeOpenAICompatModelsHash_Empty(t *testing.T) {	if got := ComputeOpenAICompatModelsHash(nil); got != "" {		t.Fatalf("expected empty hash for nil input, got %q", got)	}	if got := ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{}); got != "" {		t.Fatalf("expected empty hash for empty slice, got %q", got)	}	if got := ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: " "}, {Alias: ""}}); got != "" {		t.Fatalf("expected empty hash for blank models, got %q", got)	}} func TestComputeVertexCompatModelsHash_Empty(t *testing.T) {	if got := ComputeVertexCompatModelsHash(nil); got != "" {		t.Fatalf("expected empty hash for nil input, got %q", got)	}	if got := ComputeVertexCompatModelsHash([]config.VertexCompatModel{}); got != "" {		t.Fatalf("expected empty hash for empty slice, got %q", got)	}	if got := ComputeVertexCompatModelsHash([]config.VertexCompatModel{{Name: " "}}); got != "" {		t.Fatalf("expected empty hash for blank models, got %q", got)	}} func TestComputeExcludedModelsHash_Empty(t *testing.T) {	if got := ComputeExcludedModelsHash(nil); got != "" {		t.Fatalf("expected empty hash for nil input, got %q", got)	}	if got := ComputeExcludedModelsHash([]string{}); got != "" {		t.Fatalf("expected empty hash for empty slice, got %q", got)	}	if got := ComputeExcludedModelsHash([]string{"  ", ""}); got != "" {		t.Fatalf("expected empty hash for whitespace-only entries, got %q", got)	}} func TestComputeClaudeModelsHash_Deterministic(t *testing.T) {	models := []config.ClaudeModel{{Name: "a", Alias: "A"}, {Name: "b"}}	h1 := ComputeClaudeModelsHash(models)	h2 := ComputeClaudeModelsHash(models)	if h1 == "" || h1 != h2 {		t.Fatalf("expected deterministic hash, got %s / %s", h1, h2)	}	if h3 := ComputeClaudeModelsHash([]config.ClaudeModel{{Name: "a"}}); h3 == h1 {		t.Fatalf("expected different hash when models change, got %s", h3)	}} func TestComputeCodexModelsHash_Deterministic(t *testing.T) {	models := []config.CodexModel{{Name: "a", Alias: "A"}, {Name: "b"}}	h1 := ComputeCodexModelsHash(models)	h2 := ComputeCodexModelsHash(models)	if h1 == "" || h1 != h2 {		t.Fatalf("expected deterministic hash, got %s / %s", h1, h2)	}	if h3 := ComputeCodexModelsHash([]config.CodexModel{{Name: "a"}}); h3 == h1 {		t.Fatalf("expected different hash when models change, got %s", h3)	}} func TestComputeModelHashesIncludeThinking(t *testing.T) {	low := &registry.ThinkingSupport{Levels: []string{"low"}}	high := &registry.ThinkingSupport{Levels: []string{"high"}}	tests := []struct {		name string		low  string		high string	}{		{name: "openai compatibility", low: ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: "m", Thinking: low}}), high: ComputeOpenAICompatModelsHash([]config.OpenAICompatibilityModel{{Name: "m", Thinking: high}})},		{name: "vertex", low: ComputeVertexCompatModelsHash([]config.VertexCompatModel{{Name: "m", Thinking: low}}), high: ComputeVertexCompatModelsHash([]config.VertexCompatModel{{Name: "m", Thinking: high}})},		{name: "claude", low: ComputeClaudeModelsHash([]config.ClaudeModel{{Name: "m", Thinking: low}}), high: ComputeClaudeModelsHash([]config.ClaudeModel{{Name: "m", Thinking: high}})},		{name: "codex", low: ComputeCodexModelsHash([]config.CodexModel{{Name: "m", Thinking: low}}), high: ComputeCodexModelsHash([]config.CodexModel{{Name: "m", Thinking: high}})},		{name: "gemini", low: ComputeGeminiModelsHash([]config.GeminiModel{{Name: "m", Thinking: low}}), high: ComputeGeminiModelsHash([]config.GeminiModel{{Name: "m", Thinking: high}})},	}	for _, tc := range tests {		t.Run(tc.name, func(t *testing.T) {			if tc.low == "" || tc.low == tc.high {				t.Fatalf("thinking capability must change model hash: %q / %q", tc.low, tc.high)			}		})	}}