1 files changed, 158 insertions, 0 deletions
diff --git a/tests/gobang.go b/tests/gobang.go
index f071f53..a03e8bc 100644
--- a/tests/gobang.go
+++ b/tests/gobang.go
@@ -489,6 +489,157 @@ func test_ParseUUID() {
 	})
 }
 
+func test_showColour() {
+	TestStart("showColour()")
+
+	const NAME = "NO_COLOUR"
+	savedEnvvar := os.Getenv(NAME)
+
+	Testing("true when envvar is unset", func() {
+		ErrorIf(os.Unsetenv(NAME))
+		AssertEqual(showColour(), true)
+	})
+
+	Testing("true when envvar is empty", func() {
+		ErrorIf(os.Setenv(NAME, ""))
+		AssertEqual(showColour(), true)
+	})
+
+	Testing("false otherwise", func() {
+		ErrorIf(os.Setenv(NAME, "1"))
+		AssertEqual(showColour(), false)
+	})
+
+	ErrorIf(os.Setenv(NAME, savedEnvvar))
+}
+
+func test_levelFromString() {
+	TestStart("levelFromString()")
+
+	values := []string { "NONE", "ERROR", "WARNING", "INFO", "DEBUG" }
+	Testing("ok for expected values", func() {
+		for _, s := range values {
+			var fallback logLevel = 123
+			theLevel := levelFromString(s, fallback)
+			notFallback :=
+				theLevel >= LevelNone &&
+				theLevel <= LevelDebug &&
+				theLevel != fallback
+			AssertEqual(notFallback, true)
+		}
+	})
+
+	Testing("fallback for unexpected values", func() {
+		var fallback logLevel = 123
+		theLevel := levelFromString(string(Random(10)), fallback)
+		AssertEqual(theLevel, fallback)
+	})
+}
+
+func test_setLogLevel() {
+	TestStart("setLogLevel()")
+
+	const NAME = "LOG_LEVEL"
+	savedEnvvar := os.Getenv(NAME)
+	savedValue  := level
+	var fallbackValue logLevel = 123
+
+	Testing("noop when envvar is unset", func() {
+		ErrorIf(os.Unsetenv(NAME))
+		level = fallbackValue
+
+		setLogLevel()
+
+		AssertEqual(level, fallbackValue)
+	})
+
+	Testing("noop when envvar is empty", func() {
+		ErrorIf(os.Setenv(NAME, ""))
+		level = fallbackValue
+
+		setLogLevel()
+
+		AssertEqual(level, fallbackValue)
+	})
+
+	Testing("update variable otherwise", func() {
+		ErrorIf(os.Setenv(NAME, "DEBUG"))
+		level = fallbackValue
+
+		setLogLevel()
+
+		AssertEqual(level, LevelDebug)
+	})
+
+	ErrorIf(os.Setenv(NAME, savedEnvvar))
+	level = savedValue
+}
+
+func test_setMetric() {
+	TestStart("setMetric()")
+
+	const NAME = "NO_METRIC"
+	savedEnvvar := os.Getenv(NAME)
+	savedValue  := emitMetric
+
+	Testing("noop when envvar is unset", func() {
+		ErrorIf(os.Unsetenv(NAME))
+		emitMetric = true
+
+		setMetric()
+
+		AssertEqual(emitMetric, true)
+	})
+
+	Testing("noop when envvar is empty", func() {
+		ErrorIf(os.Setenv(NAME, ""))
+		emitMetric = true
+
+		setMetric()
+
+		AssertEqual(emitMetric, true)
+	})
+
+	Testing("make variable false otherwise", func() {
+		ErrorIf(os.Setenv(NAME, "1"))
+		emitMetric = true
+
+		setMetric()
+
+		AssertEqual(emitMetric, false)
+	})
+
+	ErrorIf(os.Setenv(NAME, savedEnvvar))
+	emitMetric = savedValue
+}
+
+func test_FatalIf() {
+	TestStart("FatalIf()")
+
+	Testing("noop on nil value", func() {
+		FatalIf(nil)
+	})
+}
+
+func test_Assert() {
+	TestStart("Assert()")
+
+	Testing("noop on true value", func() {
+		Assert(true, "")
+	})
+}
+
+func test_setHostname() {
+	TestStart("setHostname()")
+
+	Testing("it assigns the value to the global variable", func() {
+		name, _ := os.Hostname()
+		hostname = ""
+		setHostname()
+		AssertEqual(hostname, name)
+	})
+}
+
 func TestSetLoggerOutput() {
 	return
 	type entry struct {
@@ -533,6 +684,13 @@ func t4() {
 	test_NewUUID()
 	test_UUIDString()
 	test_ParseUUID()
+	test_showColour()
+	test_levelFromString()
+	test_setLogLevel()
+	test_setMetric()
+	test_FatalIf()
+	test_Assert()
+	test_setHostname()
 }
 
 func MainTest() {