fix keyboard tests and exclude opencv

Makefile

@@ -1,14 +1,15 @@
 .PHONY: test race cover robeaux examples test_with_coverage fmt_check
 
-excluding_vendor := $(shell go list ./... | grep -v /vendor/)
+# opencv platform currently skipped to prevent install of preconditions
+including_except := $(shell go list ./... | grep -v platforms/opencv)
 
-# Run tests on all non-vendor directories
+# Run tests on nearly all directories
 test:
-	go test -v $(excluding_vendor)
+	go test -v $(including_except)
 
-# Run tests with race detection on all non-vendor directories
+# Run tests with race detection
 race:
-	go test -race $(excluding_vendor)
+	go test -race $(including_except)
 
 # Check for code well-formedness
 fmt_check:

platforms/keyboard/keyboard_test.go

@@ -15,23 +15,23 @@ func TestParseEscape(t *testing.T) {
 }
 
 func TestParseHyphen(t *testing.T) {
-	gobottest.Assert(t, Parse(bytes{45, 0, 0}).Key, Escape)
+	gobottest.Assert(t, Parse(bytes{45, 0, 0}).Key, Hyphen)
 }
 
 func TestParseAsterisk(t *testing.T) {
-	gobottest.Assert(t, Parse(bytes{42, 0, 0}).Key, Escape)
+	gobottest.Assert(t, Parse(bytes{42, 0, 0}).Key, Asterisk)
 }
 
 func TestParsePlus(t *testing.T) {
-	gobottest.Assert(t, Parse(bytes{43, 0, 0}).Key, Escape)
+	gobottest.Assert(t, Parse(bytes{43, 0, 0}).Key, Plus)
 }
 
 func TestParseSlash(t *testing.T) {
-	gobottest.Assert(t, Parse(bytes{47, 0, 0}).Key, Escape)
+	gobottest.Assert(t, Parse(bytes{47, 0, 0}).Key, Slash)
 }
 
 func TestParseDot(t *testing.T) {
-	gobottest.Assert(t, Parse(bytes{46, 0, 0}).Key, Escape)
+	gobottest.Assert(t, Parse(bytes{46, 0, 0}).Key, Dot)
 }
 
 func TestParseNotEscape(t *testing.T) {