Add CHANGELOG + improvements to #980

Closes #978

taskfile/platforms_test.go

@@ -0,0 +1,49 @@
+package taskfile
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPlatformParsing(t *testing.T) {
+	tests := []struct {
+		Input        string
+		ExpectedOS   string
+		ExpectedArch string
+		Error        string
+	}{
+		{Input: "windows", ExpectedOS: "windows", ExpectedArch: ""},
+		{Input: "linux", ExpectedOS: "linux", ExpectedArch: ""},
+		{Input: "darwin", ExpectedOS: "darwin", ExpectedArch: ""},
+
+		{Input: "386", ExpectedOS: "", ExpectedArch: "386"},
+		{Input: "amd64", ExpectedOS: "", ExpectedArch: "amd64"},
+		{Input: "arm64", ExpectedOS: "", ExpectedArch: "arm64"},
+
+		{Input: "windows/386", ExpectedOS: "windows", ExpectedArch: "386"},
+		{Input: "windows/amd64", ExpectedOS: "windows", ExpectedArch: "amd64"},
+		{Input: "windows/arm64", ExpectedOS: "windows", ExpectedArch: "arm64"},
+
+		{Input: "invalid", Error: `task: Invalid platform "invalid"`},
+		{Input: "invalid/invalid", Error: `task: Invalid platform "invalid/invalid"`},
+		{Input: "windows/invalid", Error: `task: Invalid platform "windows/invalid"`},
+		{Input: "invalid/amd64", Error: `task: Invalid platform "invalid/amd64"`},
+	}
+
+	for _, test := range tests {
+		t.Run(test.Input, func(t *testing.T) {
+			var p Platform
+			err := p.parsePlatform(test.Input)
+
+			if test.Error != "" {
+				assert.Error(t, err)
+				assert.Equal(t, test.Error, err.Error())
+			} else {
+				assert.NoError(t, err)
+				assert.Equal(t, test.ExpectedOS, p.OS)
+				assert.Equal(t, test.ExpectedArch, p.Arch)
+			}
+		})
+	}
+}