Committing vendored dependencies and generated protos
Change-Id: I349c149b513d9de7d9f60bde2c954a939da2fc54
diff --git a/vendor/gotest.tools/assert/result.go b/vendor/gotest.tools/assert/result.go
new file mode 100644
index 0000000..949d939
--- /dev/null
+++ b/vendor/gotest.tools/assert/result.go
@@ -0,0 +1,106 @@
+package assert
+
+import (
+ "fmt"
+ "go/ast"
+
+ "gotest.tools/assert/cmp"
+ "gotest.tools/internal/format"
+ "gotest.tools/internal/source"
+)
+
+func runComparison(
+ t TestingT,
+ argSelector argSelector,
+ f cmp.Comparison,
+ msgAndArgs ...interface{},
+) bool {
+ if ht, ok := t.(helperT); ok {
+ ht.Helper()
+ }
+ result := f()
+ if result.Success() {
+ return true
+ }
+
+ var message string
+ switch typed := result.(type) {
+ case resultWithComparisonArgs:
+ const stackIndex = 3 // Assert/Check, assert, runComparison
+ args, err := source.CallExprArgs(stackIndex)
+ if err != nil {
+ t.Log(err.Error())
+ }
+ message = typed.FailureMessage(filterPrintableExpr(argSelector(args)))
+ case resultBasic:
+ message = typed.FailureMessage()
+ default:
+ message = fmt.Sprintf("comparison returned invalid Result type: %T", result)
+ }
+
+ t.Log(format.WithCustomMessage(failureMessage+message, msgAndArgs...))
+ return false
+}
+
+type resultWithComparisonArgs interface {
+ FailureMessage(args []ast.Expr) string
+}
+
+type resultBasic interface {
+ FailureMessage() string
+}
+
+// filterPrintableExpr filters the ast.Expr slice to only include Expr that are
+// easy to read when printed and contain relevant information to an assertion.
+//
+// Ident and SelectorExpr are included because they print nicely and the variable
+// names may provide additional context to their values.
+// BasicLit and CompositeLit are excluded because their source is equivalent to
+// their value, which is already available.
+// Other types are ignored for now, but could be added if they are relevant.
+func filterPrintableExpr(args []ast.Expr) []ast.Expr {
+ result := make([]ast.Expr, len(args))
+ for i, arg := range args {
+ if isShortPrintableExpr(arg) {
+ result[i] = arg
+ continue
+ }
+
+ if starExpr, ok := arg.(*ast.StarExpr); ok {
+ result[i] = starExpr.X
+ continue
+ }
+ }
+ return result
+}
+
+func isShortPrintableExpr(expr ast.Expr) bool {
+ switch expr.(type) {
+ case *ast.Ident, *ast.SelectorExpr, *ast.IndexExpr, *ast.SliceExpr:
+ return true
+ case *ast.BinaryExpr, *ast.UnaryExpr:
+ return true
+ default:
+ // CallExpr, ParenExpr, TypeAssertExpr, KeyValueExpr, StarExpr
+ return false
+ }
+}
+
+type argSelector func([]ast.Expr) []ast.Expr
+
+func argsAfterT(args []ast.Expr) []ast.Expr {
+ if len(args) < 1 {
+ return nil
+ }
+ return args[1:]
+}
+
+func argsFromComparisonCall(args []ast.Expr) []ast.Expr {
+ if len(args) < 1 {
+ return nil
+ }
+ if callExpr, ok := args[1].(*ast.CallExpr); ok {
+ return callExpr.Args
+ }
+ return nil
+}