initial vendor commit

.vendor/src/github.com/golang/lint/testdata/errors.go

@@ -0,0 +1,36 @@
+// Test for naming errors.
+
+// Package foo ...
+package foo
+
+import (
+	"errors"
+	"fmt"
+)
+
+var unexp = errors.New("some unexported error") // MATCH /error var.*unexp.*errFoo/
+
+// Exp ...
+var Exp = errors.New("some exported error") // MATCH /error var.*Exp.*ErrFoo/
+
+var (
+	e1 = fmt.Errorf("blah %d", 4) // MATCH /error var.*e1.*errFoo/
+	// E2 ...
+	E2 = fmt.Errorf("blah %d", 5) // MATCH /error var.*E2.*ErrFoo/
+)
+
+func f() {
+	var whatever = errors.New("ok") // ok
+	_ = whatever
+}
+
+// Check for the error strings themselves.
+
+func g(x int) error {
+	if x < 1 {
+		return fmt.Errorf("This %d is too low", x) // MATCH /error strings.*not be capitalized/
+	} else if x == 0 {
+		return fmt.Errorf("XML time") // ok
+	}
+	return errors.New(`too much stuff.`) // MATCH /error strings.*not end with punctuation/
+}