style: Document camelCasing in test name suffix

When a test name suffix consists of multiple words camelCasing should be
used to indicate separation of words.

1 files changed, 7 insertions, 3 deletions

diff --git a/STYLE.md b/STYLE.md
index 64319a6b7..a67515d6a 100644
--- a/STYLE.md
+++ b/STYLE.md
@@ -177,17 +177,21 @@ A type should be declared before its first use.
 Prefer to name tests in the same style as [examples](https://golang.org/pkg/testing/#hdr-Examples).
 
 To declare a test for the package, a function F, a type T and method M on type T are:
-```
+
+```go
 func TestF() { ... }
 func TestT() { ... }
 func TestT_M() { ... }
 ```
 
-A suffix may be appended to distinguish between test cases. The suffix must start with a lower-case letter.
-```
+A suffix may be appended to distinguish between test cases. The suffix must
+start with a lower-case letter and use camelCasing to separate words.
+
+```go
 func TestF_suffix() { ... }
 func TestT_suffix() { ... }
 func TestT_M_suffix() { ... }
+func TestT_M_suffixWithMultipleWords() { ... }
 ```
 
 ### Table-driven tests