Add main test

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

t/.gitignore

@@ -0,0 +1 @@
+/test-results/

t/main.t

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+#!/bin/bash
+#
+# Copyright (c) 2023 Felipe Contreras
+#
+
+test_description='Main tests'
+
+. "${SHARNESS_TEST_SRCDIR-/usr/share/sharness}"/sharness.sh || exit 1
+
+check() {
+	echo "$3" > expected &&
+	git -C "$1" show -q --format='%s' "$2" > actual &&
+	test_cmp expected actual
+}
+
+git_clone() {
+	(
+	git init -q "$2" &&
+	cd "$2" &&
+	hg-fast-export.sh --repo "../$1"
+	)
+}
+
+setup() {
+	cat > "$HOME"/.hgrc <<-EOF
+	[ui]
+	username = H G Wells <wells@example.com>
+	EOF
+}
+
+setup
+
+test_expect_success 'basic' '
+	test_when_finished "rm -rf hgrepo gitrepo" &&
+
+	(
+	hg init hgrepo &&
+	cd hgrepo &&
+	echo zero > content &&
+	hg add content &&
+	hg commit -m zero
+	) &&
+
+	git_clone hgrepo gitrepo &&
+	check gitrepo @ zero
+'
+
+test_expect_success 'merge' '
+	test_when_finished "rm -rf hgrepo gitrepo" &&
+
+	(
+	hg init hgrepo &&
+	cd hgrepo &&
+	echo a > content &&
+	echo a > file1 &&
+	hg add content file1 &&
+	hg commit -m "origin" &&
+
+	echo b > content &&
+	echo b > file2 &&
+	hg add file2 &&
+	hg rm file1 &&
+	hg commit -m "right" &&
+
+	hg update -r0 &&
+	echo c > content &&
+	hg commit -m "left" &&
+
+	HGMERGE=true hg merge -r1 &&
+	hg commit -m "merge"
+	) &&
+
+	git_clone hgrepo gitrepo &&
+
+	cat > expected <<-EOF &&
+	left
+	c
+	tree @:
+
+	content
+	file2
+	EOF
+
+	(
+	cd gitrepo
+	git show -q --format='%s' @^ &&
+	git show @:content &&
+	git show @:
+	) > actual &&
+
+	test_cmp expected actual
+'
+
+test_done