Add simple integration tests

4 files changed, 167 insertions, 57 deletions

diff --git a/Cargo.lock b/Cargo.lock
index a463035..8c1752b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,192 +4,257 @@
 name = "ansi_term"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 dependencies = [
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi",
 ]
 
 [[package]]
 name = "ansi_term"
 version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
 dependencies = [
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi",
 ]
 
 [[package]]
 name = "anyhow"
 version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85bb70cc08ec97ca5450e6eba421deeea5f172c0fc61f78b5357b2a8e8be195f"
+
+[[package]]
+name = "assert_cmd"
+version = "1.0.1"
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+checksum = "c88b9ca26f9c16ec830350d309397e74ee9abdfd8eb1f71cb6ecc71a3fc818da"
+dependencies = [
+ "doc-comment",
+ "predicates",
+ "predicates-core",
+ "predicates-tree",
+ "wait-timeout",
+]
 
 [[package]]
 name = "atty"
 version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 dependencies = [
- "hermit-abi 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hermit-abi",
+ "libc",
+ "winapi",
 ]
 
 [[package]]
 name = "bitflags"
 version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
 [[package]]
 name = "clap"
 version = "2.33.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
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- "textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ansi_term 0.11.0",
+ "atty",
+ "bitflags",
+ "strsim",
+ "term_size",
+ "textwrap",
+ "unicode-width",
 ]
 
 [[package]]
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+
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- "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc",
 ]
 
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- "clap 2.33.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
- "thiserror 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ansi_term 0.12.1",
+ "anyhow",
+ "assert_cmd",
+ "atty",
+ "clap",
+ "libc",
+ "thiserror",
 ]
 
 [[package]]
 name = "libc"
 version = "0.2.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"
+
+[[package]]
+name = "predicates"
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+checksum = "96bfead12e90dccead362d62bb2c90a5f6fc4584963645bc7f71a735e0b0735a"
+dependencies = [
+ "difference",
+ "predicates-core",
+]
+
+[[package]]
+name = "predicates-core"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "predicates-core",
+ "treeline",
+]
 
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+ "unicode-xid",
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 [[package]]
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+checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
 dependencies = [
- "proc-macro2 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2",
 ]
 
 [[package]]
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- "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
 ]
 
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 dependencies = [
- "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc",
+ "winapi",
 ]
 
 [[package]]
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 version = "0.11.0"
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+checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
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- "unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "unicode-width",
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 [[package]]
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 dependencies = [
- "thiserror-impl 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thiserror-impl",
 ]
 
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- "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.31 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
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+dependencies = [
+ "libc",
+]
 
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 dependencies = [
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- "winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
 ]
 
 [[package]]
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+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
index b2e74dd..16cd4b3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,6 +22,9 @@ version = "2"
 default-features = false
 features = ["suggestions", "color", "wrap_help"]
 
+[dev-dependencies]
+assert_cmd = "1.0.1"
+
 [profile.release]
 lto = true
 codegen-units = 1
diff --git a/tests/examples/ascii b/tests/examples/ascii
new file mode 100644
index 0000000..5893667
--- /dev/null
+++ b/tests/examples/ascii
@@ -0,0 +1 @@
+abcdefgh!?%&/()
diff --git a/tests/integration_tests.rs b/tests/integration_tests.rs
new file mode 100644
index 0000000..accfe44
--- /dev/null
+++ b/tests/integration_tests.rs
@@ -0,0 +1,41 @@
+use assert_cmd::Command;
+
+fn hexyl() -> Command {
+    let mut cmd = Command::cargo_bin("hexyl").unwrap();
+    cmd.current_dir("tests/examples");
+    cmd
+}
+
+#[test]
+fn can_print_simple_ascii_file() {
+    hexyl()
+        .arg("ascii")
+        .arg("--color=never")
+        .assert()
+        .success()
+        .stdout(
+            "┌────────┬─────────────────────────┬─────────────────────────┬────────┬────────┐\n\
+             │00000000│ 61 62 63 64 65 66 67 68 ┊ 21 3f 25 26 2f 28 29 0a │abcdefgh┊!?%&/()_│\n\
+             └────────┴─────────────────────────┴─────────────────────────┴────────┴────────┘\n",
+        );
+}
+
+#[test]
+fn fails_on_non_existing_input() {
+    hexyl().arg("non-existing").assert().failure();
+}
+
+#[test]
+fn display_offset() {
+    hexyl()
+        .arg("ascii")
+        .arg("--color=never")
+        .arg("--display-offset=0xc0ffee")
+        .assert()
+        .success()
+        .stdout(
+            "┌────────┬─────────────────────────┬─────────────────────────┬────────┬────────┐\n\
+             │00c0ffee│ 61 62 63 64 65 66 67 68 ┊ 21 3f 25 26 2f 28 29 0a │abcdefgh┊!?%&/()_│\n\
+             └────────┴─────────────────────────┴─────────────────────────┴────────┴────────┘\n",
+        );
+}