Linux doesn't uses .exe-files

build.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+env GOOS=linux GOARCH=amd64 go build -o timepercentage.linux-amd64
+env GOOS=windows GOARCH=amd64 go build -o timepercentage.windows-amd64.exe

tp.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"log"
 	"time"
 )
 
@@ -80,14 +81,22 @@ func renderDay() string {
 }
 
 func getCurrentTime() (time.Time, int) {
+	// Declarations
+	var offset int
+	var loc *time.Location
+	var err error
+
 	// Current Time
 	ct := time.Now()
 
 	// Get the offset from whatever the system timezone is
-	_, offset := ct.Local().Zone()
+	_, offset = ct.Local().Zone()
 
 	// Make sure that the time is in UTC, so the offset makes sense
-	loc, _ := time.LoadLocation("UTC")
+	loc, err = time.LoadLocation("UTC")
+	if err != nil {
+		log.Fatal(err)
+	}
 	ct = ct.In(loc)
 
 	// Return things
@@ -121,7 +130,12 @@ func renderPercentage(percentage float64) string {
 
 // Get the percentages between two float64s
 func calcPercentageFloat64(full float64, part float64) float64 {
-	return part / (full / 100)
+	var percentage float64
+	percentage = part / (full / 100)
+	if percentage >= 100 {
+		percentage = percentage - 100
+	}
+	return percentage
 }
 
 // Get the start of the year.

tp_test.go

@@ -0,0 +1,36 @@
+package main
+
+import "testing"
+
+func TestRenderPercentage(t *testing.T) {
+	var percentage float64
+
+	percentage = 91.8948715
+	if renderPercentage(percentage) != "▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒░░░░" {
+		t.Errorf("renderPercentage(%f)", percentage)
+	}
+
+	percentage = 15.8682051
+	if renderPercentage(percentage) != "▓▓▓▓▓▓▓▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░" {
+		t.Errorf("renderPercentage(%f)", percentage)
+	}
+
+}
+
+func TestCalcPercentageFloat64(t *testing.T) {
+	var full float64
+	var part float64
+
+	full = 100
+	part = 50
+	if calcPercentageFloat64(full, part) != 50 {
+		t.Errorf("calcPercentageFloat64(%f,%f) test failed", full, part)
+	}
+
+	full = 8000
+	part = 2000
+	if calcPercentageFloat64(full, part) != 25 {
+		t.Errorf("calcPercentageFloat64(%f,%f) test failed", full, part)
+	}
+
+}