DRY file loading

tests/block_test_util.go

@@ -3,9 +3,7 @@ package tests
 import (
 	"bytes"
 	"encoding/hex"
-	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"math/big"
 	"path/filepath"
 	"runtime"
@@ -87,9 +85,9 @@ type btTransaction struct {
 }
 
 func RunBlockTest(filepath string) error {
-	bt, err := LoadBlockTests(filepath)
+	bt, err := loadBlockTests(filepath)
 	if err != nil {
-		return nil
+		return err
 	}
 
 	// map skipped tests to boolean set
@@ -158,22 +156,6 @@ func testEthConfig() *eth.Config {
 	}
 }
 
-// LoadBlockTests loads a block test JSON file.
-func LoadBlockTests(file string) (map[string]*BlockTest, error) {
-	bt := make(map[string]*btJSON)
-	if err := LoadJSON(file, &bt); err != nil {
-		return nil, err
-	}
-	out := make(map[string]*BlockTest)
-	for name, in := range bt {
-		var err error
-		if out[name], err = convertTest(in); err != nil {
-			return out, fmt.Errorf("bad test %q: %v", name, err)
-		}
-	}
-	return out, nil
-}
-
 // InsertPreState populates the given database with the genesis
 // accounts defined by the test.
 func (t *BlockTest) InsertPreState(ethereum *eth.Ethereum) (*state.StateDB, error) {
@@ -467,34 +449,20 @@ func mustConvertUint(in string, base int) uint64 {
 	return out
 }
 
-// LoadJSON reads the given file and unmarshals its content.
-func LoadJSON(file string, val interface{}) error {
-	content, err := ioutil.ReadFile(file)
-	if err != nil {
-		return err
+func loadBlockTests(file string) (map[string]*BlockTest, error) {
+	bt := make(map[string]*btJSON)
+	if err := readTestFile(file, &bt); err != nil {
+		return nil, err
 	}
-	if err := json.Unmarshal(content, val); err != nil {
-		if syntaxerr, ok := err.(*json.SyntaxError); ok {
-			line := findLine(content, syntaxerr.Offset)
-			return fmt.Errorf("JSON syntax error at %v:%v: %v", file, line, err)
-		}
-		return fmt.Errorf("JSON unmarshal error in %v: %v", file, err)
-	}
-	return nil
-}
 
-// findLine returns the line number for the given offset into data.
-func findLine(data []byte, offset int64) (line int) {
-	line = 1
-	for i, r := range string(data) {
-		if int64(i) >= offset {
-			return
-		}
-		if r == '\n' {
-			line++
+	out := make(map[string]*BlockTest)
+	for name, in := range bt {
+		var err error
+		if out[name], err = convertTest(in); err != nil {
+			return out, fmt.Errorf("bad test %q: %v", name, err)
 		}
 	}
-	return
+	return out, nil
 }
 
 // Nothing to see here, please move along...

tests/init.go

@@ -2,6 +2,7 @@ package tests
 
 import (
 	"encoding/json"
+	"fmt"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -24,14 +25,35 @@ var (
 
 func readJSON(reader io.Reader, value interface{}) error {
 	data, err := ioutil.ReadAll(reader)
-	err = json.Unmarshal(data, &value)
 	if err != nil {
-		return err
+		return fmt.Errorf("Error reading JSON file", err.Error())
+	}
+
+	if err = json.Unmarshal(data, &value); err != nil {
+		if syntaxerr, ok := err.(*json.SyntaxError); ok {
+			line := findLine(data, syntaxerr.Offset)
+			return fmt.Errorf("JSON syntax error at line %v: %v", line, err)
+		}
+		return fmt.Errorf("JSON unmarshal error: %v", err)
 	}
 	return nil
 }
 
-func CreateHttpTests(uri string, value interface{}) error {
+// findLine returns the line number for the given offset into data.
+func findLine(data []byte, offset int64) (line int) {
+	line = 1
+	for i, r := range string(data) {
+		if int64(i) >= offset {
+			return
+		}
+		if r == '\n' {
+			line++
+		}
+	}
+	return
+}
+
+func readHttpFile(uri string, value interface{}) error {
 	resp, err := http.Get(uri)
 	if err != nil {
 		return err
@@ -45,7 +67,7 @@ func CreateHttpTests(uri string, value interface{}) error {
 	return nil
 }
 
-func CreateFileTests(fn string, value interface{}) error {
+func readTestFile(fn string, value interface{}) error {
 	file, err := os.Open(fn)
 	if err != nil {
 		return err
@@ -54,7 +76,7 @@ func CreateFileTests(fn string, value interface{}) error {
 
 	err = readJSON(file, value)
 	if err != nil {
-		return err
+		return fmt.Errorf("%s in file %s", err.Error(), fn)
 	}
 	return nil
 }

tests/state_test_util.go

@@ -21,7 +21,7 @@ func RunStateTest(p string) error {
 	}
 
 	tests := make(map[string]VmTest)
-	CreateFileTests(p, &tests)
+	readTestFile(p, &tests)
 
 	for name, test := range tests {
 		if skipTest[name] {
@@ -61,16 +61,10 @@ func RunStateTest(p string) error {
 		ret, logs, _, _ = RunState(statedb, env, test.Transaction)
 
 		// // Compare expected  and actual return
-		// switch name {
-		// // the memory required for these tests (4294967297 bytes) would take too much time.
-		// // on 19 May 2015 decided to skip these tests their output.
-		// case "mload32bitBound_return", "mload32bitBound_return2":
-		// default:
 		rexp := common.FromHex(test.Out)
 		if bytes.Compare(rexp, ret) != 0 {
 			return fmt.Errorf("%s's return failed. Expected %x, got %x\n", name, rexp, ret)
 		}
-		// }
 
 		// check post state
 		for addr, account := range test.Post {

tests/transaction_test_util.go

@@ -37,7 +37,7 @@ func RunTransactionTests(file string) error {
 	}
 
 	bt := make(map[string]TransactionTest)
-	if err := LoadJSON(file, &bt); err != nil {
+	if err := readTestFile(file, &bt); err != nil {
 		return err
 	}
 

tests/vm_test_util.go

@@ -19,7 +19,7 @@ func RunVmTest(p string) error {
 	}
 
 	tests := make(map[string]VmTest)
-	err := CreateFileTests(p, &tests)
+	err := readTestFile(p, &tests)
 	if err != nil {
 		return err
 	}