1 files changed, 168 insertions, 0 deletions
diff --git a/std/flags/bool_test.ts b/std/flags/bool_test.ts
new file mode 100755
index 000000000..422ae0933
--- /dev/null
+++ b/std/flags/bool_test.ts
@@ -0,0 +1,168 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { test } from "../testing/mod.ts";
+import { assertEquals } from "../testing/asserts.ts";
+import { parse } from "./mod.ts";
+
+test(function flagBooleanDefaultFalse(): void {
+  const argv = parse(["moo"], {
+    boolean: ["t", "verbose"],
+    default: { verbose: false, t: false }
+  });
+
+  assertEquals(argv, {
+    verbose: false,
+    t: false,
+    _: ["moo"]
+  });
+
+  assertEquals(typeof argv.verbose, "boolean");
+  assertEquals(typeof argv.t, "boolean");
+});
+
+test(function booleanGroups(): void {
+  const argv = parse(["-x", "-z", "one", "two", "three"], {
+    boolean: ["x", "y", "z"]
+  });
+
+  assertEquals(argv, {
+    x: true,
+    y: false,
+    z: true,
+    _: ["one", "two", "three"]
+  });
+
+  assertEquals(typeof argv.x, "boolean");
+  assertEquals(typeof argv.y, "boolean");
+  assertEquals(typeof argv.z, "boolean");
+});
+
+test(function booleanAndAliasWithChainableApi(): void {
+  const aliased = ["-h", "derp"];
+  const regular = ["--herp", "derp"];
+  const aliasedArgv = parse(aliased, {
+    boolean: "herp",
+    alias: { h: "herp" }
+  });
+  const propertyArgv = parse(regular, {
+    boolean: "herp",
+    alias: { h: "herp" }
+  });
+  const expected = {
+    herp: true,
+    h: true,
+    _: ["derp"]
+  };
+
+  assertEquals(aliasedArgv, expected);
+  assertEquals(propertyArgv, expected);
+});
+
+test(function booleanAndAliasWithOptionsHash(): void {
+  const aliased = ["-h", "derp"];
+  const regular = ["--herp", "derp"];
+  const opts = {
+    alias: { h: "herp" },
+    boolean: "herp"
+  };
+  const aliasedArgv = parse(aliased, opts);
+  const propertyArgv = parse(regular, opts);
+  const expected = {
+    herp: true,
+    h: true,
+    _: ["derp"]
+  };
+  assertEquals(aliasedArgv, expected);
+  assertEquals(propertyArgv, expected);
+});
+
+test(function booleanAndAliasArrayWithOptionsHash(): void {
+  const aliased = ["-h", "derp"];
+  const regular = ["--herp", "derp"];
+  const alt = ["--harp", "derp"];
+  const opts = {
+    alias: { h: ["herp", "harp"] },
+    boolean: "h"
+  };
+  const aliasedArgv = parse(aliased, opts);
+  const propertyArgv = parse(regular, opts);
+  const altPropertyArgv = parse(alt, opts);
+  const expected = {
+    harp: true,
+    herp: true,
+    h: true,
+    _: ["derp"]
+  };
+  assertEquals(aliasedArgv, expected);
+  assertEquals(propertyArgv, expected);
+  assertEquals(altPropertyArgv, expected);
+});
+
+test(function booleanAndAliasUsingExplicitTrue(): void {
+  const aliased = ["-h", "true"];
+  const regular = ["--herp", "true"];
+  const opts = {
+    alias: { h: "herp" },
+    boolean: "h"
+  };
+  const aliasedArgv = parse(aliased, opts);
+  const propertyArgv = parse(regular, opts);
+  const expected = {
+    herp: true,
+    h: true,
+    _: []
+  };
+
+  assertEquals(aliasedArgv, expected);
+  assertEquals(propertyArgv, expected);
+});
+
+// regression, see https://github.com/substack/node-optimist/issues/71
+// boolean and --x=true
+test(function booleanAndNonBoolean(): void {
+  const parsed = parse(["--boool", "--other=true"], {
+    boolean: "boool"
+  });
+
+  assertEquals(parsed.boool, true);
+  assertEquals(parsed.other, "true");
+
+  const parsed2 = parse(["--boool", "--other=false"], {
+    boolean: "boool"
+  });
+
+  assertEquals(parsed2.boool, true);
+  assertEquals(parsed2.other, "false");
+});
+
+test(function booleanParsingTrue(): void {
+  const parsed = parse(["--boool=true"], {
+    default: {
+      boool: false
+    },
+    boolean: ["boool"]
+  });
+
+  assertEquals(parsed.boool, true);
+});
+
+test(function booleanParsingFalse(): void {
+  const parsed = parse(["--boool=false"], {
+    default: {
+      boool: true
+    },
+    boolean: ["boool"]
+  });
+
+  assertEquals(parsed.boool, false);
+});
+
+test(function booleanParsingTrueLike(): void {
+  const parsed = parse(["-t", "true123"], { boolean: ["t"] });
+  assertEquals(parsed.t, true);
+
+  const parsed2 = parse(["-t", "123"], { boolean: ["t"] });
+  assertEquals(parsed2.t, true);
+
+  const parsed3 = parse(["-t", "false123"], { boolean: ["t"] });
+  assertEquals(parsed3.t, true);
+});