add slow_grid, grid_oom tests

e2etests/regression_test.go

@@ -932,6 +932,8 @@ d
 a -> b -> c
 `,
 		},
+		loadFromFile(t, "slow_grid"),
+		loadFromFile(t, "grid_oom"),
 	}
 
 	runa(t, tcs)

e2etests/testdata/files/slow_grid.d2

@@ -0,0 +1,147 @@
+grid-columns: 15
+
+1: {
+  shape: class
+  1: ------------------
+  2: -------------------------------
+  3: ------------------------------
+  4: -------------------------
+}
+2: {
+  shape: class
+  1: -----------------
+  2: ----------------------------
+}
+3: {
+  shape: class
+  1: -----------------
+  2: ----------------------------
+  3: ------------------------------
+  4: -------------------------
+}
+4: {
+  shape: class
+  1: ----------------------------
+}
+5: {
+  shape: class
+  1: --------------------
+  2: ----------------------------------------------
+  3: ---------------------------------
+}
+6: {
+  shape: class
+  1: ----------------------------------------
+  2: ------------------------
+  3: ------------------------
+  4: --------------------------------------
+}
+7: {
+  shape: class
+  1: ----------------------------------------
+  2: ---------------------
+  3: ------------------------
+  4: --------------------------------------
+}
+5: {
+  shape: class
+  1: ----------------------------------------
+  2: ---------------------
+  3: ------------------------
+  4: --------------------------------------
+}
+9: {
+  shape: class
+  1: ----------------------
+  2: -------------------------------------------
+  3: -----------------------
+  4: --------------------------
+  5: -----------------------------
+  6: -----------------------------
+  7: --------------------------
+}
+10: {
+  shape: class
+  1: -----------------
+}
+11: {
+  shape: class
+  1: ----------------
+  2: ---------------------------
+  3: -----------------------------
+  4: ------------------------
+}
+12: {
+  shape: class
+  1: ----------------------
+  2: -----------------------
+  3: -------------
+  4: -------------
+  5: ------------------------
+  6: ------------------------------------------------
+  7: --------------------------
+}
+13: {
+  shape: class
+  1: --------------------------------
+}
+14: {
+  shape: class
+  1: ----------------
+  2: ---------------------------
+  3: -----------------------------
+  4: ------------------------
+}
+15: {
+  shape: class
+  1: ------------------------
+  2: ----------------------
+}
+16: {
+  shape: class
+  1: ----------------
+  2: ------------------------------
+}
+17: {
+  shape: class
+  1: -----------------
+}
+18: {
+  shape: class
+  1: ----------------
+}
+19: {
+  shape: class
+  1: -----------------
+}
+20: {
+  shape: class
+  1: -----------------
+}
+21: {
+  shape: class
+  1: ----------------
+  2: ---------------------------
+  3: -----------------------------
+  4: ------------------------
+}
+22: {
+  shape: class
+  1: ---------------------------------------------
+  2: --------------------
+  3: -----------------------
+  4: -------------------------------------
+}
+23: {
+  shape: class
+  1: ----------------
+  2: ------------------------------
+}
+24: {
+  shape: class
+  1: -----------------
+}
+25: {
+  shape: class
+  1: -----------------
+}