Add unit tests.

internal/caller_caller_test.go

@@ -0,0 +1,38 @@
+// Copyright 2021 The ZKits Project Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package internal
+
+import (
+	"testing"
+)
+
+func TestCallerReporter_GetCaller(t *testing.T) {
+	r := NewCallerReporter(1)
+	f1 := func() string { return r.GetCaller() }
+	f2 := func() string { return f1() }
+	f3 := func() string { return f2() }
+	f4 := func() string { return f3() }
+	f5 := func() string { return f4() }
+
+	got := f5() // Line 29
+	if want := "caller_caller_test.go:29"; got != want {
+		t.Fatalf("CallerReporter.GetCaller(): got %q, want %q", got, want)
+	}
+
+	got = r.GetCaller()
+	if want := "???:0"; got != want {
+		t.Fatalf("CallerReporter.GetCaller(): got %q, want %q", got, want)
+	}
+}

internal/caller_test.go

@@ -0,0 +1,38 @@
+// Copyright 2021 The ZKits Project Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package internal
+
+import (
+	"testing"
+)
+
+func TestNewCallerReporter(t *testing.T) {
+	if NewCallerReporter(0) == nil {
+		t.Fatal("NewCallerReporter(0): nil")
+	}
+	if NewCallerReporter(1) == nil {
+		t.Fatal("NewCallerReporter(1): nil")
+	}
+}
+
+func TestCallerReporter_Equal(t *testing.T) {
+	r := NewCallerReporter(1)
+	if r.Equal(0) {
+		t.Fatal("CallerReporter.Equal(0): true")
+	}
+	if !r.Equal(1) {
+		t.Fatal("CallerReporter.Equal(1): false")
+	}
+}

internal/default_test.go

@@ -0,0 +1,65 @@
+// Copyright 2021 The ZKits Project Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package internal
+
+import (
+	"bytes"
+	"os"
+	"testing"
+)
+
+func TestEmptyExitFunc(t *testing.T) {
+	EmptyExitFunc(0) // nothing
+}
+
+func TestDefaultPanicFunc(t *testing.T) {
+	defer func() {
+		v := recover()
+		if v == nil {
+			t.Fatal("DefaultPanicFunc(): no panic")
+		}
+		s, ok := v.(string)
+		if !ok {
+			t.Fatalf("DefaultPanicFunc(): got %T - %v", v, v)
+		}
+		if s != "test" {
+			t.Fatalf("DefaultPanicFunc(): got %s", s)
+		}
+	}()
+	DefaultPanicFunc("test")
+}
+
+func TestEmptyPanicFunc(t *testing.T) {
+	defer func() {
+		v := recover()
+		if v != nil {
+			t.Fatalf("EmptyPanicFunc(): got %T - %v", v, v)
+		}
+	}()
+	EmptyPanicFunc("test")
+}
+
+func TestEchoError(t *testing.T) {
+	defer func() { ErrorWriter = os.Stderr }()
+
+	buf := new(bytes.Buffer)
+	ErrorWriter = buf
+
+	EchoError("test-%d", 1)
+
+	if got := buf.String(); got != "test-1\n" {
+		t.Fatalf("EchoError(): got %q", got)
+	}
+}