console: split graph.go into query.go and graph.go

We will introduce more query types.

console/query_test.go

@@ -0,0 +1,42 @@
+package console
+
+import (
+	"testing"
+
+	"akvorado/common/helpers"
+)
+
+func TestQueryColumnSQLSelect(t *testing.T) {
+	cases := []struct {
+		Input    queryColumn
+		Expected string
+	}{
+		{
+			Input:    queryColumnSrcAddr,
+			Expected: `IPv6NumToString(SrcAddr)`,
+		}, {
+			Input:    queryColumnDstAS,
+			Expected: `concat(toString(DstAS), ': ', dictGetOrDefault('asns', 'name', DstAS, '???'))`,
+		}, {
+			Input:    queryColumnProto,
+			Expected: `dictGetOrDefault('protocols', 'name', Proto, '???')`,
+		}, {
+			Input:    queryColumnEType,
+			Expected: `if(EType = 0x800, 'IPv4', if(EType = 0x86dd, 'IPv6', '???'))`,
+		}, {
+			Input:    queryColumnOutIfSpeed,
+			Expected: `toString(OutIfSpeed)`,
+		}, {
+			Input:    queryColumnExporterName,
+			Expected: `ExporterName`,
+		},
+	}
+	for _, tc := range cases {
+		t.Run(tc.Input.String(), func(t *testing.T) {
+			got := tc.Input.toSQLSelect()
+			if diff := helpers.Diff(got, tc.Expected); diff != "" {
+				t.Errorf("toSQLWhere (-got, +want):\n%s", diff)
+			}
+		})
+	}
+}