Add tests for config

config.go

@@ -24,7 +24,7 @@ func init() {
 	appConfig.dbPath = dbPath()
 	appConfig.statsUsername = statsUsername()
 	appConfig.statsPassword = statsPassword()
-	appConfig.statsAuth = len(appConfig.statsUsername) > 0 && len(appConfig.statsPassword) > 0
+	appConfig.statsAuth = statsAuth(appConfig)
 }
 
 func port() string {
@@ -62,3 +62,7 @@ func statsPassword() (password string) {
 	password = os.Getenv("STATS_PASSWORD")
 	return
 }
+
+func statsAuth(ac *config) bool {
+	return len(ac.statsUsername) > 0 && len(ac.statsPassword) > 0
+}

config_test.go

@@ -0,0 +1,132 @@
+package main
+
+import (
+	"os"
+	"testing"
+)
+
+func Test_port(t *testing.T) {
+	tests := []struct {
+		name   string
+		envVar string
+		want   string
+	}{
+		{name: "default", envVar: "", want: "8080"},
+		{name: "custom", envVar: "1234", want: "1234"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_ = os.Setenv("PORT", tt.envVar)
+			if got := port(); got != tt.want {
+				t.Errorf("port() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func Test_dnt(t *testing.T) {
+	tests := []struct {
+		name   string
+		envVar string
+		want   bool
+	}{
+		{name: "default", envVar: "", want: true},
+		{envVar: "true", want: true},
+		{envVar: "t", want: true},
+		{envVar: "TRUE", want: true},
+		{envVar: "1", want: true},
+		{envVar: "false", want: false},
+		{envVar: "f", want: false},
+		{envVar: "0", want: false},
+		{envVar: "abc", want: true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_ = os.Setenv("DNT", tt.envVar)
+			if got := dnt(); got != tt.want {
+				t.Errorf("dnt() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func Test_dbPath(t *testing.T) {
+	tests := []struct {
+		name       string
+		envVar     string
+		wantDbPath string
+	}{
+		{name: "default", envVar: "", wantDbPath: "data/kis3.db"},
+		{envVar: "kis3.db", wantDbPath: "kis3.db"},
+		{envVar: "data.db", wantDbPath: "data.db"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_ = os.Setenv("DB_PATH", tt.envVar)
+			if gotDbPath := dbPath(); gotDbPath != tt.wantDbPath {
+				t.Errorf("dbPath() = %v, want %v", gotDbPath, tt.wantDbPath)
+			}
+		})
+	}
+}
+
+func Test_statsUsername(t *testing.T) {
+	tests := []struct {
+		name         string
+		envVar       string
+		wantUsername string
+	}{
+		{name: "default", envVar: "", wantUsername: ""},
+		{envVar: "abc", wantUsername: "abc"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_ = os.Setenv("STATS_USERNAME", tt.envVar)
+			if gotUsername := statsUsername(); gotUsername != tt.wantUsername {
+				t.Errorf("statsUsername() = %v, want %v", gotUsername, tt.wantUsername)
+			}
+		})
+	}
+}
+
+func Test_statsPassword(t *testing.T) {
+	tests := []struct {
+		name         string
+		envVar       string
+		wantPassword string
+	}{
+		{name: "default", envVar: "", wantPassword: ""},
+		{envVar: "def", wantPassword: "def"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_ = os.Setenv("STATS_PASSWORD", tt.envVar)
+			if gotPassword := statsPassword(); gotPassword != tt.wantPassword {
+				t.Errorf("statsPassword() = %v, want %v", gotPassword, tt.wantPassword)
+			}
+		})
+	}
+}
+
+func Test_statsAuth(t *testing.T) {
+	type args struct {
+		ac *config
+	}
+	tests := []struct {
+		name string
+		args args
+		want bool
+	}{
+		{name: "default", args: struct{ ac *config }{ac: &config{}}, want: false},
+		{name: "only username set", args: struct{ ac *config }{ac: &config{statsUsername: "abc"}}, want: false},
+		{name: "only password set", args: struct{ ac *config }{ac: &config{statsPassword: "def"}}, want: false},
+		{name: "username and password set", args: struct{ ac *config }{ac: &config{statsUsername: "abc", statsPassword: "def"}}, want: true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := statsAuth(tt.args.ac); got != tt.want {
+				t.Errorf("statsAuth() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}