feat(format): select_wrap and join_wrap with when_long via Doc-IR

pkg/format/dml_test.go

@@ -647,3 +647,50 @@ func TestDMLCaseCollapseUsesLineWidth(t *testing.T) {
 		t.Errorf("exceeds 30, should wrap:\n%s", got)
 	}
 }
+
+func TestSelectWrap(t *testing.T) {
+	src := "select a, b, c from t"
+	st := config.Default()
+	if got := File(parser.Parse(src), st); !strings.Contains(got, "\n  ,b") {
+		t.Errorf("default select_wrap=always should list one per line:\n%s", got)
+	}
+	st.SelectWrap = config.WrapNever
+	if got := File(parser.Parse(src), st); !strings.Contains(got, "SELECT a, b, c") {
+		t.Errorf("never:\n%s", got)
+	}
+	st.SelectWrap = config.WrapWhenLong
+	st.LineWidth = 120
+	if got := File(parser.Parse(src), st); !strings.Contains(got, "SELECT a, b, c") {
+		t.Errorf("when_long, short:\n%s", got)
+	}
+	st.LineWidth = 8
+	if got := File(parser.Parse(src), st); !strings.Contains(got, "\n  ,b") {
+		t.Errorf("when_long, long:\n%s", got)
+	}
+}
+
+func TestJoinWrap(t *testing.T) {
+	src := "select a from t join u on t.id = u.id and t.x = u.x"
+	st := config.Default()
+	base := File(parser.Parse(src), st)
+	if !strings.Contains(base, "JOIN u ON t.id = u.id AND t.x = u.x") {
+		t.Fatalf("default join_wrap=never should stay inline:\n%s", base)
+	}
+	st.JoinWrap = config.WrapAlways
+	got := File(parser.Parse(src), st)
+	if !strings.Contains(got, "JOIN u\n  ON t.id = u.id\n  AND t.x = u.x") {
+		t.Errorf("always:\n%s", got)
+	}
+	if twice := File(parser.Parse(got), st); twice != got {
+		t.Errorf("not idempotent:\n%s\n---\n%s", got, twice)
+	}
+	st.JoinWrap = config.WrapWhenLong
+	st.LineWidth = 120
+	if File(parser.Parse(src), st) != base {
+		t.Errorf("when_long short should equal inline")
+	}
+	st.LineWidth = 20
+	if File(parser.Parse(src), st) != got {
+		t.Errorf("when_long long should equal always")
+	}
+}