[#3] Add a custom CompileFile

It is a copy of neotest.CompileFile() but it returns debug info
in addition to contract info.

Signed-off-by: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>

covertest/compile.go

@@ -0,0 +1,64 @@
+package covertest
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neo-go/cli/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/compiler"
+	"github.com/nspcc-dev/neo-go/pkg/config"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/neotest"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/stretchr/testify/require"
+)
+
+// ContractWithDebugInfo contains contract info for deployment and debug information for coverage.
+type ContractWithDebugInfo struct {
+	Contract  *neotest.Contract
+	DebugInfo *compiler.DebugInfo
+}
+
+// contracts caches the compiled contracts from FS across multiple tests.
+var contracts = make(map[string]*neotest.Contract)
+
+// CompileFile compiles a contract from the file and returns its NEF, manifest, hash and debug information.
+func CompileFile(t testing.TB, sender util.Uint160, srcPath string, configPath string) *ContractWithDebugInfo {
+	if c, ok := contracts[srcPath]; ok {
+		return c
+	}
+
+	// nef.NewFile() cares about version a lot.
+	config.Version = "neotest"
+
+	ne, di, err := compiler.CompileWithOptions(srcPath, nil, nil)
+	require.NoError(t, err)
+
+	conf, err := smartcontract.ParseContractConfig(configPath)
+	require.NoError(t, err)
+
+	o := &compiler.Options{}
+	o.Name = conf.Name
+	o.ContractEvents = conf.Events
+	o.ContractSupportedStandards = conf.SupportedStandards
+	o.Permissions = make([]manifest.Permission, len(conf.Permissions))
+	for i := range conf.Permissions {
+		o.Permissions[i] = manifest.Permission(conf.Permissions[i])
+	}
+	o.SafeMethods = conf.SafeMethods
+	o.Overloads = conf.Overloads
+	o.SourceURL = conf.SourceURL
+	m, err := compiler.CreateManifest(di, o)
+	require.NoError(t, err)
+
+	c := &neotest.Contract{
+		Hash:     state.CreateContractHash(sender, ne.Checksum, m.Name),
+		NEF:      ne,
+		Manifest: m,
+	}
+	contracts[srcPath] = c
+	return &ContractWithDebugInfo{
+		Contract:  c,
+		DebugInfo: di,
+	}
+}