ci: add Go 1.23/1.24 testing and fix example test names

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-versions: [ '1.18', '1.22' ]
+        go-versions: [ '1.18', '1.22', '1.24' ]
         go-arch: [ '386' ]
     steps:
       - uses: actions/checkout@v3

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-versions: [ '1.18', '1.19', '1.20', '1.21', '1.22' ]
+        go-versions: [ '1.18', '1.19', '1.20', '1.21', '1.22', '1.23', '1.24' ]
     steps:
       - uses: actions/checkout@v3
       - name: Setup Go ${{ matrix.go-version }}

expr_test.go

@@ -312,7 +312,7 @@ func ExampleOperator() {
 	// Output: true
 }
 
-func ExampleOperator_Decimal() {
+func ExampleOperator_with_decimal() {
 	type Decimal struct{ N float64 }
 	code := `A + B - C`
 
@@ -585,7 +585,7 @@ func ExampleWithContext() {
 	// Output: 42
 }
 
-func ExampleWithTimezone() {
+func ExampleTimezone() {
 	program, err := expr.Compile(`now().Location().String()`, expr.Timezone("Asia/Kamchatka"))
 	if err != nil {
 		fmt.Printf("%v", err)

internal/difflib/difflib_test.go

@@ -102,7 +102,7 @@ group
 	}
 }
 
-func ExampleGetUnifiedDiffCode() {
+func ExampleGetUnifiedDiffString() {
 	a := `one
 two
 three
@@ -135,7 +135,7 @@ four`
 	// -fmt.Printf("%s,%T",a,b)
 }
 
-func ExampleGetContextDiffCode() {
+func ExampleGetContextDiffString() {
 	a := `one
 two
 three
@@ -172,7 +172,7 @@ four`
 	//   four
 }
 
-func ExampleGetContextDiffString() {
+func ExampleGetContextDiffString_second() {
 	a := `one
 two
 three