diff --git a/output_gen.go b/output_gen.go
index caff2eb..f8bb421 100644
--- a/output_gen.go
+++ b/output_gen.go
@@ -24,7 +24,12 @@ func (gen *OutputGenerator) _break() {
 	gen.Builder.WriteByte('\n')
 }
 
-func (gen *OutputGenerator) ExpGen(level int, explain *ExplainGenerator) {
+func (gen *OutputGenerator) FromExplanation(level int, explain *ExplainGenerator) {
+	if level == 1 && (explain.Builder == nil || explain.Builder.Len() == 0) && explain.Sections == nil {
+		gen.Writeln("No explanation found for this error.")
+		return
+	}
+
 	if explain.Builder != nil {
 		gen.Write(explain.Builder.String())
 	}
@@ -33,7 +38,7 @@ func (gen *OutputGenerator) ExpGen(level int, explain *ExplainGenerator) {
 		for sectionName, exp := range explain.Sections {
 			gen._break()
 			gen.Heading(level+1, sectionName)
-			gen.ExpGen(level+1, exp)
+			gen.FromExplanation(level+1, exp)
 		}
 	} else {
 		gen._break()
@@ -79,7 +84,7 @@ func (gen *OutputGenerator) Generate(explain *ExplainGenerator, bugFix *BugFixGe
 		gen.Heading(1, explain.ErrorName)
 	}
 
-	gen.ExpGen(1, explain)
+	gen.FromExplanation(1, explain)
 	if gen.GenAfterExplain != nil {
 		gen.GenAfterExplain(gen)
 	}
@@ -194,7 +199,7 @@ func (gen *OutputGenerator) Generate(explain *ExplainGenerator, bugFix *BugFixGe
 
 		}
 	} else {
-		gen.Writeln("Nothing to fix")
+		gen.Writeln("No bug fixes found for this error.")
 	}
 
 	return strings.TrimSpace(gen.Builder.String())
diff --git a/output_gen_test.go b/output_gen_test.go
index 19c2721..94bf30d 100644
--- a/output_gen_test.go
+++ b/output_gen_test.go
@@ -1,3 +1,148 @@
-package errgoengine
+package errgoengine_test
 
-// TODO:
+import (
+	"strings"
+	"testing"
+
+	lib "github.com/nedpals/errgoengine"
+	sitter "github.com/smacker/go-tree-sitter"
+)
+
+func TestOutputGenerator(t *testing.T) {
+	parser := sitter.NewParser()
+	doc, err := lib.ParseDocument("program.test", strings.NewReader("a = xyz\nb = 123\nxyz = \"test\""), parser, lib.TestLanguage, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	gen := &lib.OutputGenerator{}
+
+	t.Run("Simple", func(t *testing.T) {
+		defer gen.Reset()
+
+		bugFix := lib.NewBugFixGenerator(doc)
+		explain := lib.NewExplainGeneratorForError("NameError")
+
+		// create a fake name error explanation
+		explain.Add("The variable you are trying to use is not defined. In this case, the variable `xyz` is not defined.")
+
+		// create a fake bug fix suggestion
+		bugFix.Add("Define the variable `xyz` before using it.", func(s *lib.BugFixSuggestion) {
+			s.AddStep("In line 1, replace `xyz` with `\"test\"`.").
+				AddFix(lib.FixSuggestion{
+					NewText: "\"test\"",
+					StartPosition: lib.Position{
+						Line:   0,
+						Column: 4,
+					},
+					EndPosition: lib.Position{
+						Line:   0,
+						Column: 7,
+					},
+				})
+		})
+
+		// generate the output
+		output := gen.Generate(explain, bugFix)
+
+		// check if the output is correct
+		expected := `# NameError
+The variable you are trying to use is not defined. In this case, the variable ` + "`xyz`" + ` is not defined.
+## Steps to fix
+### Define the variable ` + "`xyz`" + ` before using it.
+In line 1, replace ` + "`xyz`" + ` with ` + "`\"test\"`" + `.
+` + "```diff" + `
+- a = xyz
++ a = "test"
+b = 123
+xyz = "test"
+` + "```" + ``
+
+		if output != expected {
+			t.Errorf("exp %s, got %s", expected, output)
+		}
+	})
+
+	t.Run("Empty explanation", func(t *testing.T) {
+		defer gen.Reset()
+
+		bugFix := lib.NewBugFixGenerator(doc)
+		explain := lib.NewExplainGeneratorForError("NameError")
+
+		// generate bug fix
+		bugFix.Add("Define the variable `xyz` before using it.", func(s *lib.BugFixSuggestion) {
+			s.AddStep("In line 1, replace `xyz` with `\"test\"`.").
+				AddFix(lib.FixSuggestion{
+					NewText: "\"test\"",
+					StartPosition: lib.Position{
+						Line:   0,
+						Column: 4,
+					},
+					EndPosition: lib.Position{
+						Line:   0,
+						Column: 7,
+					},
+				})
+		})
+
+		// generate the output
+		output := gen.Generate(explain, bugFix)
+
+		// check if the output is correct
+		expected := `# NameError
+No explanation found for this error.
+## Steps to fix
+### Define the variable ` + "`xyz`" + ` before using it.
+In line 1, replace ` + "`xyz`" + ` with ` + "`\"test\"`" + `.
+` + "```diff" + `
+- a = xyz
++ a = "test"
+b = 123
+xyz = "test"
+` + "```" + ``
+		if output != expected {
+			t.Errorf("exp %s, got %s", expected, output)
+		}
+	})
+
+	t.Run("Empty bug fixes", func(t *testing.T) {
+		defer gen.Reset()
+
+		bugFix := lib.NewBugFixGenerator(doc)
+		explain := lib.NewExplainGeneratorForError("NameError")
+
+		// create a fake name error explanation
+		explain.Add("The variable you are trying to use is not defined. In this case, the variable `xyz` is not defined.")
+
+		// generate the output
+		output := gen.Generate(explain, bugFix)
+
+		// check if the output is correct
+		expected := `# NameError
+The variable you are trying to use is not defined. In this case, the variable ` + "`xyz`" + ` is not defined.
+## Steps to fix
+No bug fixes found for this error.`
+		if output != expected {
+			t.Errorf("exp %s, got %s", expected, output)
+		}
+	})
+
+	t.Run("Empty explanation + bug fixes", func(t *testing.T) {
+		defer gen.Reset()
+
+		bugFix := lib.NewBugFixGenerator(doc)
+		explain := lib.NewExplainGeneratorForError("NameError")
+
+		// generate the output
+		output := gen.Generate(explain, bugFix)
+
+		// check if the output is correct
+		expected := `# NameError
+No explanation found for this error.
+## Steps to fix
+No bug fixes found for this error.`
+		if output != expected {
+			t.Errorf("exp %s, got %s", expected, output)
+		}
+	})
+}