move: log parsers

logparser/testing/main_test.go

@@ -0,0 +1,59 @@
+// +build integration
+
+// go test -tags=integration
+
+package main_test
+
+import (
+	"bytes"
+	"os/exec"
+	"strings"
+	"testing"
+)
+
+const (
+	okIn = `
+a.com 1 2
+b.com 3 4
+a.com 4 5
+b.com 6 7`
+
+	okOut = `
+DOMAIN                             VISITS           TIME SPENT
+-----------------------------------------------------------------
+a.com                                   5                    7
+b.com                                   9                   11
+
+TOTAL                                  14                   18`
+)
+
+func TestSummary(t *testing.T) {
+	tests := []struct {
+		name, in, out string
+	}{
+		{"valid input", okIn, okOut},
+		{"missing fields", "a.com 1 2\nb.com 3", "> Err: line #2: missing fields: [b.com 3]"},
+		{"incorrect visits", "a.com 1 2\nb.com -1 1", `> Err: line #2: incorrect visits: "-1"`},
+		{"incorrect time spent", "a.com 1 2\nb.com 3 -1", `> Err: line #2: incorrect time spent: "-1"`},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			run(t, strings.TrimSpace(tt.in), strings.TrimSpace(tt.out))
+		})
+	}
+}
+
+func run(t *testing.T, in, out string) {
+	cmd := exec.Command("go", "run", ".")
+	cmd.Stdin = strings.NewReader(in)
+
+	got, err := cmd.CombinedOutput()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !bytes.Equal(got, []byte(out+"\n")) {
+		t.Fatalf("\nwant:\n%s\n\ngot:\n%s", out, got)
+	}
+}