Feat/parser

.github/workflows/unit-test.yaml

@@ -0,0 +1,26 @@
+name: Go Test
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Go 1.25
+      uses: actions/setup-go@v5
+      with:
+        go-version: '1.25'
+        cache: true
+
+    - name: Get dependencies
+      run: go mod download
+
+    - name: Run Tests
+      run: go test -v -race -cover ./...

ast/ast.go

@@ -0,0 +1,49 @@
+package ast
+
+import (
+	"bytes"
+)
+
+type Node interface {
+	TokenLiteral() string
+	String() string
+}
+
+type Definition interface {
+	Node
+	definitionNode()
+}
+
+type Value interface {
+	Node
+	valueNode()
+}
+
+type Type interface {
+	Node
+	typeNode()
+}
+
+type Selection interface {
+	Node
+	selectionNode()
+}
+
+type Document struct {
+	Definitions []Definition
+}
+
+func (d *Document) TokenLiteral() string {
+	if len(d.Definitions) > 0 {
+		return d.Definitions[0].TokenLiteral()
+	}
+	return ""
+}
+
+func (d *Document) String() string {
+	var out bytes.Buffer
+	for _, s := range d.Definitions {
+		out.WriteString(s.String())
+	}
+	return out.String()
+}

ast/ast_test.go

@@ -0,0 +1,109 @@
+package ast_test
+
+import (
+	"testing"
+
+	"github.com/n9te9/graphql-parser/ast"
+	"github.com/n9te9/graphql-parser/token"
+)
+
+func TestDocument_String(t *testing.T) {
+	tests := []struct {
+		name     string
+		node     *ast.Document
+		expected string
+	}{
+		{
+			name: "Document with Single Query",
+			node: &ast.Document{
+				Definitions: []ast.Definition{
+					&ast.OperationDefinition{
+						Token:     token.Token{Literal: "query"},
+						Operation: ast.Query,
+						Name:      &ast.Name{Token: token.Token{Literal: "MyQuery"}, Value: "MyQuery"},
+						SelectionSet: []ast.Selection{
+							&ast.Field{
+								Token: token.Token{Literal: "user"},
+								Name:  &ast.Name{Token: token.Token{Literal: "user"}, Value: "user"},
+							},
+						},
+					},
+				},
+			},
+			expected: "query MyQuery { user }",
+		},
+		{
+			name: "Document with Multiple Definitions",
+			node: &ast.Document{
+				Definitions: []ast.Definition{
+					&ast.OperationDefinition{
+						Token:     token.Token{Literal: "query"},
+						Operation: ast.Query,
+						Name:      &ast.Name{Token: token.Token{Literal: "GetU"}, Value: "GetU"},
+						SelectionSet: []ast.Selection{
+							&ast.Field{
+								Token: token.Token{Literal: "u"},
+								Name:  &ast.Name{Token: token.Token{Literal: "u"}, Value: "u"},
+							},
+						},
+					},
+					&ast.OperationDefinition{
+						Token:     token.Token{Literal: "mutation"},
+						Operation: ast.Mutation,
+						Name:      &ast.Name{Token: token.Token{Literal: "SaveU"}, Value: "SaveU"},
+						SelectionSet: []ast.Selection{
+							&ast.Field{
+								Token: token.Token{Literal: "s"},
+								Name:  &ast.Name{Token: token.Token{Literal: "s"}, Value: "s"},
+							},
+						},
+					},
+				},
+			},
+			expected: "query GetU { u }mutation SaveU { s }",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.node.String(); got != tt.expected {
+				t.Errorf("String() mismatch.\n got:      %s\n expected: %s", got, tt.expected)
+			}
+		})
+	}
+}
+
+func TestDocument_TokenLiteral(t *testing.T) {
+	tests := []struct {
+		name     string
+		node     *ast.Document
+		expected string
+	}{
+		{
+			name: "Document with Definitions",
+			node: &ast.Document{
+				Definitions: []ast.Definition{
+					&ast.OperationDefinition{
+						Token: token.Token{Literal: "query"},
+					},
+				},
+			},
+			expected: "query",
+		},
+		{
+			name: "Empty Document",
+			node: &ast.Document{
+				Definitions: []ast.Definition{},
+			},
+			expected: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.node.TokenLiteral(); got != tt.expected {
+				t.Errorf("TokenLiteral() mismatch.\n got:      %s\n expected: %s", got, tt.expected)
+			}
+		})
+	}
+}