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|
package provider
import (
"testing"
"github.com/grindlemire/go-tui/internal/tuigen"
)
func TestNewDefinitionProvider_Constructor(t *testing.T) {
index := newStubIndex()
index.functions["helper"] = &FuncInfo{
Name: "helper",
Location: Location{URI: "file:///lib.gsx", Range: Range{Start: Position{Line: 9, Character: 0}}},
}
dp := NewDefinitionProvider(index, &nilGoplsProxy{}, &nilVirtualFiles{}, &stubDocAccessor{})
if dp == nil {
t.Fatal("expected non-nil provider")
}
doc := parseTestDoc("package test")
ctx := makeCtx(doc, NodeKindUnknown, "helper")
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(result) != 1 || result[0].URI != "file:///lib.gsx" || result[0].Range.Start.Line != 9 {
t.Errorf("expected function location at file:///lib.gsx:9, got %+v", result)
}
}
func TestDefinition_EmptyWordInGoExpr(t *testing.T) {
dp := newTestDefinitionProvider(newStubIndex())
doc := parseTestDoc("package test")
ctx := makeCtx(doc, NodeKindGoExpr, "")
ctx.InGoExpr = true
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != nil {
t.Errorf("expected nil without gopls, got %+v", result)
}
}
func TestDefinition_ComponentCallVariants(t *testing.T) {
src := `package test
templ Page() {
@Sidebar()
}
`
doc := parseTestDoc(src)
call := doc.AST.Components[0].Body[0].(*tuigen.ComponentCall)
t.Run("struct mount resolves via function index", func(t *testing.T) {
index := newStubIndex()
index.functions["Sidebar"] = &FuncInfo{
Name: "Sidebar",
Location: Location{URI: "file:///side.gsx", Range: Range{Start: Position{Line: 12, Character: 0}}},
}
dp := newTestDefinitionProvider(index)
ctx := makeCtx(doc, NodeKindComponentCall, "@Sidebar")
ctx.InGoExpr = true
ctx.Node = call
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(result) != 1 || result[0].URI != "file:///side.gsx" || result[0].Range.Start.Line != 12 {
t.Errorf("expected constructor location, got %+v", result)
}
})
t.Run("unknown call returns nil", func(t *testing.T) {
dp := newTestDefinitionProvider(newStubIndex())
ctx := makeCtx(doc, NodeKindComponentCall, "@Sidebar")
ctx.Node = call
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != nil {
t.Errorf("expected nil, got %+v", result)
}
})
t.Run("wrong node type returns nil", func(t *testing.T) {
dp := newTestDefinitionProvider(newStubIndex())
ctx := makeCtx(doc, NodeKindComponentCall, "@Sidebar")
ctx.Node = &tuigen.Element{Tag: "div"}
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != nil {
t.Errorf("expected nil, got %+v", result)
}
})
}
func TestDefinition_RefAttrDottedFieldName(t *testing.T) {
src := `package test
type chat struct {
textareaRef *tui.Ref
}
templ (c *chat) Render() {
<div ref={c.textareaRef} class="p-1">x</div>
}
`
doc := parseTestDoc(src)
comp := doc.AST.Components[0]
elem := comp.Body[0].(*tuigen.Element)
if elem.RefExpr == nil {
t.Fatal("fixture did not parse ref expression")
}
dp := newTestDefinitionProvider(newStubIndex())
ctx := makeCtx(doc, NodeKindRefAttr, "textareaRef")
ctx.Node = elem
ctx.Scope.Component = comp
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(result) != 1 {
t.Fatalf("expected 1 location, got %d", len(result))
}
loc := result[0]
if loc.Range.Start.Line != 3 {
t.Errorf("expected line 3, got %d", loc.Range.Start.Line)
}
if loc.Range.Start.Character != 1 {
t.Errorf("expected character 1, got %d", loc.Range.Start.Character)
}
if loc.Range.End.Character-loc.Range.Start.Character != len("textareaRef") {
t.Errorf("expected range width %d, got %d", len("textareaRef"), loc.Range.End.Character-loc.Range.Start.Character)
}
}
func TestDefinition_RefAttrFallbackToElementPosition(t *testing.T) {
elem := &tuigen.Element{
Tag: "div",
RefExpr: &tuigen.GoExpr{Code: "panel"},
Position: tuigen.Position{Line: 1, Column: 1},
}
doc := &Document{URI: "file:///test.gsx", Content: "nothing here", Version: 1}
dp := newTestDefinitionProvider(newStubIndex())
ctx := makeCtx(doc, NodeKindRefAttr, "panel")
ctx.Node = elem
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(result) != 1 {
t.Fatalf("expected 1 location, got %d", len(result))
}
loc := result[0]
if loc.Range.Start.Line != 0 || loc.Range.Start.Character != 0 {
t.Errorf("expected fallback to element position 0:0, got %d:%d", loc.Range.Start.Line, loc.Range.Start.Character)
}
if loc.Range.End.Character != len("ref={panel}") {
t.Errorf("expected end character %d, got %d", len("ref={panel}"), loc.Range.End.Character)
}
}
func TestDefinition_ParameterNodeKind(t *testing.T) {
src := `package test
func format(msg string) string {
return msg
}
templ Header(title string) {
<div>{title}</div>
}
`
doc := parseTestDoc(src)
comp := doc.AST.Components[0]
fn := doc.AST.Funcs[0]
t.Run("function parameter", func(t *testing.T) {
index := newCovIndex()
index.funcParams["format.msg"] = &FuncParamInfo{
Name: "msg",
Type: "string",
FuncName: "format",
Location: Location{URI: doc.URI, Range: Range{Start: Position{Line: 2, Character: 12}}},
}
dp := newTestDefinitionProvider(index)
ctx := makeCtx(doc, NodeKindParameter, "msg")
ctx.Scope.Function = fn
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(result) != 1 || result[0].Range.Start.Line != 2 || result[0].Range.Start.Character != 12 {
t.Errorf("expected function param location at 2:12, got %+v", result)
}
})
t.Run("component parameter", func(t *testing.T) {
index := newStubIndex()
index.params["Header.title"] = &ParamInfo{
Name: "title",
Type: "string",
ComponentName: "Header",
Location: Location{URI: doc.URI, Range: Range{Start: Position{Line: 6, Character: 13}}},
}
dp := newTestDefinitionProvider(index)
ctx := makeCtx(doc, NodeKindParameter, "title")
ctx.Scope.Component = comp
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(result) != 1 || result[0].Range.Start.Line != 6 || result[0].Range.Start.Character != 13 {
t.Errorf("expected component param location at 6:13, got %+v", result)
}
})
t.Run("unresolved parameter returns nil", func(t *testing.T) {
dp := newTestDefinitionProvider(newStubIndex())
ctx := makeCtx(doc, NodeKindParameter, "missing")
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != nil {
t.Errorf("expected nil, got %+v", result)
}
})
}
func TestDefinition_ImportPath(t *testing.T) {
type tc struct {
importPath string
}
tests := map[string]tc{
"empty import path": {importPath: ""},
"no gopls proxy": {importPath: "fmt"},
}
dp := newTestDefinitionProvider(newStubIndex())
doc := parseTestDoc("package test\n\nimport \"fmt\"\n")
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
ctx := makeCtx(doc, NodeKindImportPath, "fmt")
ctx.ImportPath = tt.importPath
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != nil {
t.Errorf("expected nil without gopls, got %+v", result)
}
})
}
}
func TestDefinition_ComponentFromAST(t *testing.T) {
src := `package test
templ Header(title string) {
<div>{title}</div>
}
`
doc := parseTestDoc(src)
dp := newTestDefinitionProvider(newStubIndex())
ctx := makeCtx(doc, NodeKindUnknown, "Header")
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(result) != 1 {
t.Fatalf("expected 1 location, got %d", len(result))
}
loc := result[0]
if loc.Range.Start.Line != 2 || loc.Range.Start.Character != 0 {
t.Errorf("expected templ position 2:0, got %d:%d", loc.Range.Start.Line, loc.Range.Start.Character)
}
if loc.Range.End.Character != len("templ Header") {
t.Errorf("expected end character %d, got %d", len("templ Header"), loc.Range.End.Character)
}
}
func TestDefinition_FuncFromAST(t *testing.T) {
src := `package test
func (c *chat) updateHeight(h int) int {
return h
}
templ App() {
<div>x</div>
}
`
doc := parseTestDoc(src)
dp := newTestDefinitionProvider(newStubIndex())
ctx := makeCtx(doc, NodeKindUnknown, "updateHeight")
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(result) != 1 {
t.Fatalf("expected 1 location, got %d", len(result))
}
loc := result[0]
if loc.Range.Start.Line != 2 || loc.Range.Start.Character != 15 {
t.Errorf("expected method name at 2:15, got %d:%d", loc.Range.Start.Line, loc.Range.Start.Character)
}
if loc.Range.End.Character-loc.Range.Start.Character != len("updateHeight") {
t.Errorf("expected range width %d, got %d", len("updateHeight"), loc.Range.End.Character-loc.Range.Start.Character)
}
}
func TestDefinition_GoDeclFromAST(t *testing.T) {
src := `package test
type chat struct {
showSettings bool
}
var limit = 10
templ App() {
<div>x</div>
}
`
doc := parseTestDoc(src)
type tc struct {
word string
nodeKind NodeKind
wantLine int
wantChar int
}
tests := map[string]tc{
"type name via GoDecl kind": {
word: "chat",
nodeKind: NodeKindGoDecl,
wantLine: 2,
wantChar: 5,
},
"struct field via fallback": {
word: "showSettings",
nodeKind: NodeKindUnknown,
wantLine: 3,
wantChar: 1,
},
"var declaration": {
word: "limit",
nodeKind: NodeKindUnknown,
wantLine: 6,
wantChar: 4,
},
}
dp := newTestDefinitionProvider(newStubIndex())
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
ctx := makeCtx(doc, tt.nodeKind, tt.word)
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(result) != 1 {
t.Fatalf("expected 1 location, got %d", len(result))
}
loc := result[0]
if loc.Range.Start.Line != tt.wantLine || loc.Range.Start.Character != tt.wantChar {
t.Errorf("expected %d:%d, got %d:%d", tt.wantLine, tt.wantChar, loc.Range.Start.Line, loc.Range.Start.Character)
}
if loc.Range.End.Character-loc.Range.Start.Character != len(tt.word) {
t.Errorf("expected range width %d, got %d", len(tt.word), loc.Range.End.Character-loc.Range.Start.Character)
}
})
}
}
func TestDefinition_StateVarNoMatch(t *testing.T) {
dp := newTestDefinitionProvider(newStubIndex())
doc := parseTestDoc("package test")
ctx := makeCtx(doc, NodeKindStateAccess, "count")
ctx.Scope.StateVars = []tuigen.StateVar{
{Name: "other", Type: "int", Position: tuigen.Position{Line: 4, Column: 2}},
}
result, err := dp.Definition(ctx)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if result != nil {
t.Errorf("expected nil for unmatched state var, got %+v", result)
}
}
func TestOffsetToLineChar(t *testing.T) {
type tc struct {
content string
offset int
wantLine int
wantChar int
}
tests := map[string]tc{
"start of content": {
content: "abc\ndef", offset: 0, wantLine: 0, wantChar: 0,
},
"middle of first line": {
content: "abc\ndef", offset: 2, wantLine: 0, wantChar: 2,
},
"start of second line": {
content: "abc\ndef", offset: 4, wantLine: 1, wantChar: 0,
},
"middle of second line": {
content: "abc\ndef", offset: 6, wantLine: 1, wantChar: 2,
},
"offset beyond content": {
content: "ab", offset: 10, wantLine: 0, wantChar: 10,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
line, char := offsetToLineChar(tt.content, tt.offset)
if line != tt.wantLine || char != tt.wantChar {
t.Errorf("offsetToLineChar(%q, %d) = (%d, %d), want (%d, %d)",
tt.content, tt.offset, line, char, tt.wantLine, tt.wantChar)
}
})
}
}
func TestParseFuncName(t *testing.T) {
type tc struct {
code string
want string
}
tests := map[string]tc{
"plain function": {
code: "func helper(s string) string { return s }",
want: "helper",
},
"method with receiver": {
code: "func (c *chat) updateHeight(h int) int { return h }",
want: "updateHeight",
},
"no func keyword": {
code: "var x = 1",
want: "",
},
"receiver without close paren": {
code: "func (c *chat",
want: "",
},
"no parameter list": {
code: "func broken",
want: "",
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
got := parseFuncName(tt.code)
if got != tt.want {
t.Errorf("parseFuncName(%q) = %q, want %q", tt.code, got, tt.want)
}
})
}
}
|