Add test for parseGoVersion

Author: mbg

go/extractor/cli/go-autobuilder/go-autobuilder_test.go

@@ -20,3 +20,16 @@ func TestGetImportPathFromRepoURL(t *testing.T) {
 		}
 	}
 }
+
+func TestParseGoVersion(t *testing.T) {
+	tests := map[string]string{
+		"go version go1.18.9 linux/amd64": "go1.18.9",
+		"warning: GOPATH set to GOROOT (/usr/local/go) has no effect\ngo version go1.18.9 linux/amd64": "go1.18.9",
+	}
+	for input, expected := range tests {
+		actual := parseGoVersion(input)
+		if actual != expected {
+			t.Errorf("Expected parseGoVersion(\"%s\") to be \"%s\", but got \"%s\".", input, expected, actual)
+		}
+	}
+}