1 files changed, 109 insertions, 0 deletions
diff --git a/src/parser/parser.test.js b/src/parser/parser.test.js
new file mode 100644
index 0000000..b496cdc
--- /dev/null
+++ b/src/parser/parser.test.js
@@ -0,0 +1,109 @@
+'use strict';
+
+const { assemble } = require('./parser.js');
+
+
+test('assemble the imp', () => {
+	expect(assemble(`
+		mov 0, 1
+		end
+	`)).toEqual({
+		start: 0,
+		program: [
+			{
+				opcode: 'MOV',
+				a: { mode: 'direct', value: 0 },
+				b: { mode: 'direct', value: 1 },
+			},
+		],
+	});
+});
+
+
+test('assemble dwarf', () => {
+	expect(assemble(`
+		bomb  dat #0
+		dwarf add #4, bomb
+		      mov bomb, @bomb
+		      jmp dwarf
+		end dwarf
+	`)).toEqual({
+		start: 1,
+		program: [
+			{ opcode: 'DAT',
+			  a: { mode: 'immediate', value: 0 },
+			  b: { mode: 'immediate', value: 0 },
+			},
+			{ opcode: 'ADD',
+			  a: { mode: 'immediate', value: 4 },
+			  b: { mode: 'direct', value: -1 },
+			},
+			{ opcode: 'MOV',
+			  a: { mode: 'direct', value: -2 },
+			  b: { mode: 'indirect', value: -2 },
+			},
+			{ opcode: 'JMP',
+			  a: { mode: 'direct', value: -2 },
+			  b: { mode: 'direct', value: 0 },
+			},
+		],
+	});
+});
+
+
+test('assemble armadillo', () => {
+	expect(assemble(`
+		; armadillo
+		; author: stefan strack
+		
+		bomb    spl 0
+		loop    add #3039, ptr
+		ptr     mov bomb, 81
+		        jmp loop
+		        mov 1, <-1
+		end bomb
+	`)).toEqual({
+		start: 0,
+		program: [
+			{ opcode: 'SPL',
+			  a: { mode: 'direct', value: 0 },
+			  b: { mode: 'direct', value: 0 },
+			},
+			{ opcode: 'ADD',
+			  a: { mode: 'immediate', value: 3039 },
+			  b: { mode: 'direct', value: 1 },
+			},
+			{ opcode: 'MOV',
+			  a: { mode: 'direct', value: -2 },
+			  b: { mode: 'direct', value: 81 },
+			},
+			{ opcode: 'JMP',
+			  a: { mode: 'direct', value: -2 },
+			  b: { mode: 'direct', value: 0 },
+			},
+			{ opcode: 'MOV',
+			  a: { mode: 'direct', value: 1 },
+			  b: { mode: 'predecrement', value: -1 },
+			},
+		],
+	});
+});
+
+
+test('illegal instructions are not assembled', () => {
+	expect(() => assemble("dat 0, #0\nend")).toThrow();
+	expect(() => assemble("dat @0, #0\nend")).toThrow();
+
+	expect(() => assemble("mov 0, #0\nend")).toThrow();
+	expect(() => assemble("add 0, #0\nend")).toThrow();
+	expect(() => assemble("sub 0, #0\nend")).toThrow();
+	expect(() => assemble("cmp 0, #0\nend")).toThrow();
+	expect(() => assemble("slt 0, #0\nend")).toThrow();
+
+	expect(() => assemble("jmp #0, 0\nend")).toThrow();
+	expect(() => assemble("jmz #0, 0\nend")).toThrow();
+	expect(() => assemble("jmn #0, 0\nend")).toThrow();
+	expect(() => assemble("jmn #0, 0\nend")).toThrow();
+	expect(() => assemble("djn #0, 0\nend")).toThrow();
+	expect(() => assemble("spl #0, 0\nend")).toThrow();
+});