test: Use cmd version comparison instead

Author: jcs090218

test/jest/install.test.js

@@ -107,7 +107,7 @@ describe("install and uninstall", () => {
       /* VC install */
 
       test.skip("installs vc directly", async () => {
-        if ((await emacsVersion()) >= "29.1") {
+        if (cmp(await emacsVersion(), "29.1") == 1) {
           const { stderr } = await ctx.runEask(
             "install-vc https://github.com/jcs-elpa/msgu"
           );

test/jest/local.test.js

@@ -55,7 +55,7 @@ describe("local", () => {
     // NOTE: eask loc is a long running command
     it("loc", async () => {
       // installs markdown mode -- depends on emacs 28.1
-      if ((await emacsVersion()) >= "28.1") {
+      if (cmp(await emacsVersion(), "28.1") == 1) {
         await ctx.runEask("loc");
         await ctx.runEask("loc Eask");
       }
@@ -237,11 +237,11 @@ describe("local", () => {
     it("lint elint", async () => {
       await ctx.runEask("lint elisp-lint", { },
                         // See https://github.com/emacs-eask/cli/issues/11.
-                        cmp(await emacsVersion(), "28.1") == -1);
+                        cmp(await (), "28.1") == -1);
     });
 
     it("lint regexps", async () => {
-      if ((await emacsVersion()) >= "27.1") {
+      if (cmp(await (), "27.1") == 1) {
         await ctx.runEask("lint regexps");
       }
     });
@@ -260,7 +260,7 @@ describe("local", () => {
   describe("Formatting", () => {
     // installs elisp-autofmt
     it("format elisp-autofmt", async () => {
-      if ((await emacsVersion()) >= "29.1") {
+      if (cmp(await emacsVersion(), "29.1") == 1) {
         await ctx.runEask("format elisp-autofmt");
       }
     });