From 4aa1b6bdc168756c5af0d7ec0d4f412d038a34ca Mon Sep 17 00:00:00 2001
From: siddharth <s@ricketyspace.net>
Date: Sun, 10 Oct 2021 10:17:10 -0400
Subject: lib: add test for sha1

---
 Makefile         |  4 ++++
 lib/sha1_test.go | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 lib/sha1_test.go

diff --git a/Makefile b/Makefile
index cd6490a..1de7ab7 100644
--- a/Makefile
+++ b/Makefile
@@ -8,6 +8,10 @@ fmt:
 	go fmt ${MOD} ${MOD}/challenge ${MOD}/lib
 .PHONY: fmt
 
+test:
+	go test ${MOD}/lib
+.PHONY: test
+
 clean:
 	go clean
 	rm -f *~ ./*/*~
diff --git a/lib/sha1_test.go b/lib/sha1_test.go
new file mode 100644
index 0000000..93fdb6f
--- /dev/null
+++ b/lib/sha1_test.go
@@ -0,0 +1,46 @@
+// Copyright © 2021 rsiddharth <s@ricketyspace.net>
+// SPDX-License-Identifier: ISC
+
+package lib
+
+import (
+	"testing"
+)
+
+func TestSha1Hash(t *testing.T) {
+	sha1 := Sha1{}
+	sha1.Init([]uint32{})
+
+	// Test 1
+	m := "abc"
+	sha1.Message(StrToBytes(m))
+	h := sha1.Hash()
+	e := "a9993e364706816aba3e25717850c26c9cd0d89d" // Expected hash.
+	if BytesToHexStr(h) != e {
+		t.Errorf("sha1 test 1 failed: %x != %s\n", h, e)
+	}
+
+	// Test 2
+	m = "abcdbcdecdefdefgefghfghighijhi"
+	m += "jkijkljklmklmnlmnomnopnopq"
+	sha1.Message(StrToBytes(m))
+	h = sha1.Hash()
+	e = "84983e441c3bd26ebaae4aa1f95129e5e54670f1" // Expected hash.
+	if BytesToHexStr(h) != e {
+		t.Errorf("sha1 test 2 failed: %x != %s\n", h, e)
+	}
+
+	// Test 3
+	m = ""
+	m1 := "01234567012345670123456701234567"
+	m1 += "01234567012345670123456701234567"
+	for i := 0; i < 10; i++ {
+		m += m1
+	}
+	sha1.Message(StrToBytes(m))
+	h = sha1.Hash()
+	e = "dea356a2cddd90c7a7ecedc5ebb563934f460452" // Expected hash.
+	if BytesToHexStr(h) != e {
+		t.Errorf("sha1 test 3 failed: %x != %s\n", h, e)
+	}
+}
-- 
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